Prevalence of depressive symptoms in primary school students in China: A systematic review and meta-analysis

Better mental health and better academic performance: A longitudinal study of high school freshmen in China

INTRODUCTION

The present study aims to delve into the question of whether the mental well-being of middle school students may fluctuate as they transition into freshman life in China and whether this fluctuation is consistent for students from different types of high schools.

METHODS

Two school-based cross-sectional surveys were administered in Anhui, China, in November 2022 and October 2023. The current study encompassed a cohort of 3124 high school freshmen from 6 schools who participated in both surveys (47.7 % female).

RESULTS

The prevalence of depression in Wave 1 was negatively associated with the admission rates to public academic high schools (OR = 0.67, 95%CI = 0.56,0.81, p < 0.001). The prevalence of depression in Wave 1 and Wave 2 didn't change much in all students. The prevalence of depression in Wave 2 was lower than that in Wave 1 among students from public vocational high school (26.2 % in Wave 1 and 20.3 % in Wave 2, p = 0.036) and private high school (28.7 % in Wave 1 and 17.2 % in Wave 2, p = 0.089).

CONCLUSIONS

Students with better mental health status are more likely to perform better and are more likely admitted by public academic high schools. Students' mental health status don't change at the transition to academic high school, but might be improved at the transition to vocational high school.

Study pressure and self harm in Chinese primary school students: the effect of depression and parent-child relationships

Background

Self-harm has become a significant and increasing global problem in children and adolescents. In this study, we tested a moderated mediation model to examine the impact of study pressure and depression, and one protective factor, good parent-child relationship, on self harm.

Methods

A self-report Questionnaire survey was conducted among 33,285 primary school students from 3rd-6th grade (mean age = 10.36 years, SD = 1.24, 51.7% girls) in Shapingba District Chongqing, China. The survey assessed study pressure, depression, parent-child relationship, and self harm behaviors.

Results

The reporting rates of self-harm and depression in grades 3-6 of primary school were 12.7% and 16.3%, respectively. Both moderate and high study pressure were significantly associated with an increased risk of self-harm, with depression acting as a mediator (indirect effects: moderate study pressure = 0.045, high study pressure = 0.125, p < 0.001). Furthermore, a good parent-child relationship weakened the association between study pressure and self-harm, thus self harm on moderate study pressure (β=-0.057) and on high study pressure (β=-0.032) are lower than those without the moderator of a good parent-child relationship(β=0.116; β=0.168), as well as between study pressure and depression.

Conclusions

This study is the first to conduct a self-harm survey in the largest population-based sample of Chinese primary school students. The results highlight the importance of monitoring study pressure, fostering a positive parent-child relationship, and managing depressive symptoms to support students' mental health. These findings enhance our understanding of the development of self-harm behaviors and can inform the design of targeted intervention programs aimed at reducing self-harm among primary school students.

Psychopathological Symptoms and Resilience Processes among Korean Adolescents in the Context of Neighborhood Disadvantage

Research has shown that positive family and individual contexts can prevent adolescents from developing internalizing and externalizing symptoms. However, less is known about the various ways resilience occurs longitudinally, considering compensatory (i.e., additive) effects and protective (i.e., moderation) effects of contextual (external) resources and individual (internal) assets. Further, few studies have examined these resilience processes among Korean adolescents exposed to neighborhood disadvantage. In the context of neighborhood disadvantage, the present study examined the compensatory and protective effects of positive parenting and self-esteem for Korean adolescents' internalizing and externalizing symptoms across four years. Data from Waves 1 (2010), 3 (2012), and 4 (2013) from a longitudinal, nationally representative sample of Korean adolescents (N = 2322; Mean age at Wave 1 = 12.90; Females = 50.10%) were utilized. Evidencing compensatory effects, positive parenting (Wave 1) negatively and indirectly predicted both adolescents' internalizing and externalizing symptoms (Wave 4) through their self-esteem (Wave 3), independent of the effect of neighborhood disadvantage (Wave 1). However, there were differences in the protective effects depending on symptoms. In the case of internalizing symptoms (Wave 4), positive parenting (Wave 1) indirectly buffered against neighborhood disadvantage (Wave 1) through adolescents' self-esteem (Wave 3). In contrast, for externalizing symptoms (Wave 4), positive parenting (Wave 1) directly buffered the effect of neighborhood disadvantage (Wave 1). The present study highlights the resilience processes of positive parenting as an external resource and adolescents' self-esteem as an internal asset for preventing internalizing and externalizing symptoms among Korean adolescents, which has implications for intervention and policy strengthening family and individual resilience.

Traditional pediatric massage exerted an antidepressant effect and activated IGF-1/Nrf2 pathway in CUMS-exposed adolescent rats

The activation of insulin-like growth factor-1 (IGF-1)/nuclear factor-erythroid 2 related factor 2 (Nrf2) pathway contributes to enhance anti-inflammatory M2 microglia polarization and inhibit proinflammatory M1 microglia polarization, which is essential to resist neuroinflammation and thus resist depression. The prevalence of depression is high in adolescents, who are hypersensitive to chronic stress. Traditional pediatric massage (TPM) can effectively relieve depression. In this study, we investigated the action mechanism of TPM on preventing depression-like behaviors in adolescent rats exposed to chronic unpredictable mild stress (CUMS). In this investigation, we employed several behavioral tests and detections, including western blotting, immunofluorescence staining and RT-qPCR. The findings of this study demonstrated that TPM had an effectively antidepressant effect, maintained microglia polarization homeostasis and resisted neuroinflammation in the hippocampus in CUMS-exposed adolescent rats. With the treatment of picropodophyllin, the inhibitor of IGF-1 receptor, the antidepressant effect of TPM was blocked, along with inhibited IGF-1/Nrf2 pathway which were closely related with anti-inflammatory and anti-ferroptosis actions. The results suggest that TPM enhanced the resilience of adolescent rats to CUMS and exerted an antidepressant effect partially via activating IGF-1/Nrf2 pathway.

The effects of parent-child relationship, study stress, and mobile phone use on depressive symptoms among Chinese elementary school students: a moderated mediation model

Introduction

With the rising prevalence of depressive symptoms among younger individuals, depressive symptoms in elementary school students have become a focal issue of concern in society. This study investigated the association between parent-child relationship and depressive symptoms among Chinese elementary school students while testing a moderated mediation model to examine the mediating role of significant study stress and the moderating effect of frequent mobile phone use on this relationship.

Methods

We recruited elementary school students from grades 3 to 6 in S district of Chongqing, China, totaling 33,285 participants (51.72% girls; mean age = 10.36 years, SD = 1.24). Data was analyzed using structural equation modeling to assess the mediating and moderating effects of study stress and mobile phone use, respectively, on the relationship between parent-child relationship and depressive symptoms.

Results

Depressive symptoms prevalence in our study population was 16.3%. Both fair and poor parent-child relationships were significantly linked to an increased risk of depressive symptoms, with study stress serving as a mediator (indirect effects: fair parent-child relationship = 0.058, poor parent-child relationship = 0.031, p < 0.001). Frequent mobile phone use amplified the impact of fair parent-child relationships on study stress (β=0.024, SE=0.016, p < 0.05) and depressive symptoms (β = 0.021, SE = 0.018, p < 0.05) but did not moderate the relationship between poor parent-child relationships and these outcomes.

Discussion

These results emphasize the importance of nurturing parent-child relationship, monitoring study stress, and managing mobile phone usage to support students' mental health. Furthermore, the findings suggest that the impact of mobile phone usage on the mental health of elementary school students varies in complexity across different parent-child relationship contexts, providing valuable insights and recommendations for developing targeted preventive interventions for depressive symptoms in this demographic.

Effect of team-building sports games on the resilience of Chinese rural children: evidence from Nanxian county, Hunan province

Purpose

Participation in competitive sports has been shown to enhance children's mental health. However, evidence regarding the impact of group sports within traditional physical education on children's mental development is scarce. This study designed a team-building-focused physical education program and examined its effects on the resilience of rural students.

Methods

A total of 86 rural elementary school students (mean age: 11 years) were cluster-randomized into the intervention and control groups. Both groups participated in regular physical education classes three times per week. In the intervention group, the first 15-min warm-up period was replaced with sports games. From a social perspective, all games subtly encourage children to forge new social relationships by engaging in physical contact, interacting with new team members, and collaborating to achieve shared goals in a sportsmanlike manner. Resilience was assessed using the Resilience Scale for Chinese Adolescents before and after the 12-week intervention.

Results

After 12 weeks, the intervention group showed significant improvements in affect control, positive thinking, and help-seeking compared to the control group. Overall, both the individual and supportive dimensions of resilience improved following participation in team-building sports games.

Conclusions

Whether winning or losing as a team member, these experiences positively enhance children's emotional regulation, their understanding of their social roles within a team, and the development of help-seeking and concern for a distressed other. As a result, children may build new and broader social connections that extend beyond the physical education class, fostering a sportsmanlike civic virtue in their daily lives.

Parental Emotional Expressiveness Affects Primary School Children's Depression: Indirect Pathway via Parent-Child Dyadic Subsystem

Depression, in recent decades, has shown a clear trend to occur at a younger age, emerging as a prevalent mental health concern among primary school children. According to family system theory and social-ecological principles, parent individual factors, as distal factors, are able to influence the depression of child individual through the proximal factor of parent-child dyadic interaction. Within this integrated theory framework, this study aimed to utilize the principle of the actor-partner independence model to investigate the indirect pathway from paternal and maternal positive/negative emotional expressiveness to primary school children's depression via father-child and mother-child closeness/conflict. The study comprised 403 Chinese families, assessed at two separate time points with a 6-month interval. Our results showed that both paternal and maternal positive emotional expressiveness indirectly predicted children's depression through their own conflict with their child, while both parental negative emotional expressiveness indirectly predicted the children's depression through mother-child conflict. This study elucidated two pathways of (a) family distal factors to proximal factors, and subsequently to the child; (b) parent individual factors to the parent-child dyadic interaction, and subsequently to the child individual factors within the family system. Our findings suggest that regulating parental emotional expressiveness and fostering good parent-child relationships represent potential effective strategies for preventing primary school children's depression.

Unraveling depressive symptom networks: A three-year longitudinal study among Chinese junior high school adolescents

Adolescence is the peak period for the occurrence of mental health issues, particularly in the stage of junior high school. Depressive symptoms are among the most frequently experienced psychological problems. However, little is known about the symptom-level interaction features of depressive symptoms and the roles of different symptoms across the junior high school stage. To address these gaps, this study conducted a three-year longitudinal study that recruited 1301 Chinese junior high school adolescents (48.2% females; mean age = 12.46 ± 0.62, ranging from 11 to 14 in the first year). The Center for Epidemiological Studies Depression Scale was used to assess depressive symptoms. The regularized partial correlation network and the cross-lagged panel network models were used to explore the symptom-level interaction pattern. In regularized partial correlation networks, "I felt depressed" was a stable central symptom throughout the junior high school stage. Besides, "I felt lonely" and "I felt that people disliked me" were the other central symptoms in grade 7 and grade 8, and "I felt everything I did was an effort" played a central role in grade 9. Within cross-lagged panel networks, "I felt that people disliked me" and "I felt hopeless about the future" had important effects on predicting other depressive symptoms from grade 7 to 8 and from grade 8 to 9. By investigating the longitudinal interaction patterns of depressive symptoms among junior high school adolescents, the current study identifies core symptoms that could be potential prevention or intervention targets and provides a novel insight for understanding depressive symptoms during adolescence in depth.

Age-Dependent Relationship between Self-Esteem and Depressive Symptoms in Korean Adolescents: a Meta-Analysis of Longitudinal Studies

Self-esteem is a powerful protective factor against depressive symptoms, with cognitive vulnerability theory suggesting that early self-esteem more strongly predicts later depressive symptoms than vice versa. While some meta-analyses have examined these relationships, limited knowledge exists on the prospective relationship between self-esteem and depressive symptoms, particularly how it changes with age. This study conducted a longitudinal meta-analysis of nine studies (20,733 participants) on the prospective relationship between self-esteem and depressive symptoms in Korean children and adolescents. Relationships were analyzed by integrating the effect sizes of 22 zero-order correlations and 17 partial correlations and examining age-related changes. The results indicated significant negative correlations in both zero-order and partial correlations. Age-related changes showed a reverse U-shape trend in partial correlations, with the strongest negative association during childhood, weakening until age 14, and then strengthening again. Moderator analysis revealed no significant effect size variation based on publication type or gender proportion, but more recent birth cohorts exhibited a stronger negative relationship in zero-order correlations. Significant differences were also found based on the measurement instrument of depressive symptoms. These findings highlight the importance of tailored interventions to enhance self-esteem and mitigate depressive symptoms, extending the cognitive vulnerability model within Korea's cultural context and providing insights into Korean youth mental health.

Physical activity alleviates mental health problems related to bullying through moderating rumination

BACKGROUND

Physical activity and experiencing bullying is a protective and risk factor for mental health, respectively. Adolescents who suffer from bullying tend to be trapped in rumination, leading to mental health problem. However, the interaction among them from the perspective of increasing protective factors and reducing risk factors is unclear. This study explored whether rumination mediated the association between experiencing bullying and mental health problems and the moderating role of physical activity.

METHOD

This study investigated 13,983 students from high school in Jiangxi Province, China, and assessed for experiencing bullying, rumination, mental health problems (depressive, anxiety, and insomnia symptoms), and physical activity. Moderated mediation analysis was conducted using R software (version 4.1.1).

RESULTS

Significant differences were observed in rumination, physical activity and mental health problems between adolescents who have experienced bullying and those who have not (p < 0.001). Rumination mediated the relationship between experiencing bullying and depressive symptoms (β= 0.45, 95 % CI [0.42, 0.48]), anxiety symptoms (β= 0.37, 95 % CI [0.35, 0.39]), and insomnia symptoms (β= 0.36, 95 % CI [0.33, 0.38]). Moreover, physical activity moderated the relationship between rumination and depressive symptoms (coeff = -0.03, p < 0.001), anxiety symptoms (coeff = -0.02, p < 0.001), and insomnia symptoms (coeff = -0.01, p < 0.001).

CONCLUSIONS

Rumination and physical activity mediated and moderated, respectively, the relationship between experiencing bullying and adolescents' mental health problems. These findings indicate that schools and society should establish a campus bullying early warning system, pay attention to bullying incidents and promote physical activity.

Mental health problems and associated factors of students at different learning stages during and after COVID-19 pandemic in Sichuan, China

BACKGROUND

Although students' mental health might be impacted severely during the COVID-19 pandemic, there is still limited clarity regarding mental health problems among students in different learning stages after the lifting of COVID-19 restrictions in China. This study aimed to explore the long-term effects of COVID-19 on students' mental health at different learning stage and provide recommendations on education and health policies after the lifting of COVID-19 constrictions.

METHOD

This large sample, cross-sectional, online survey was conducted among students (N = 82873) in 162 schools from December 14, 2022 to February 28, 2023 in Sichuan, China. The online self-report questionnaires were sent firstly to school teachers or professors, then these teachers or professors sent the questionnaires directly to their students at schools. The scales included the Chinese version of 9-item Patient Health Questionnaire-9 (PHQ-9), the Generalized Anxiety Disorder-7 (GAD-7), the Insomnia Severity Index (ISI), the PTSD Checklist for DSM-5 (PCL-5). All the mentioned instruments showed satisfactory reliability and validity.

RESULTS

The prevalence of depression symptom in middle school group, high school group and college group was 28.5%, 45.0%, 37.3%, the anxiety symptom was 24.0%, 38.4%, 29.7% and the PTSD was 25.7%, 40.6%, 32.1%, respectively. Among the 3 groups, the high school group had the highest rate of depression symptom (45.0%), anxiety symptom (38.4%), PTSD (40.6%), insomnia (39.9%) and lifetime suicidal ideation (28.9%). For all the three groups, there were same factors increased the risk of depression and anxiety symptoms, such as academy dissatisfaction, higher score of Internet Addiction Test (IAT), ISI, cyberbullying and traditional bullying et al., while higher score of Social Support Rating Scale (SSRS) decreased the risk. In addition, each group had unique risk factors for depression and anxiety symptoms.

CONCLUSION

This study revealed that students at different learning stage were still experiencing serious mental health problem even after the lifting of COVID-19 restrictions in China. Special attention should be paid to the mental health of students, especially high school students. Education and health policies and psychosocial interventions should be developed according to the characteristics and various influencing factors of students at different learning stages.

Influence of circadian rhythm and sleep schedules on depressive symptoms among adolescents in China

Circadian rhythm (24-hour period of physiological and behavioral changes) is the basis of the overall health, including mood and health. This study aimed to explore the influence of circadian rhythm and sleep schedules on depressive symptoms in Chinese adolescents. In this cross-sectional study, 841 middle school students were recruited and divided into two groups (depressive group, DG, n = 210, and control group, n = 631) depending on the total score of The Center for Epidemiological Studies Depression Scale for Children (CES-DC). The circadian rhythm and sleep quality among adolescents were evaluated by using the Biological Rhythms Interview of Assessment in Neuropsychiatry (BRIAN) and Self-rating scale of Sleep (SRSS) scales. Furthermore, correlation analysis and logistic regression analysis were used to determine the effects of demographic factors, sleeping arrangement, sleep quality, and circadian rhythm on depressive symptoms. The DG group's CES-DC, BRIAN and SRSS scores were significantly higher than the control group's. Higher scores of BRIAN and SRSS were risk factors for depressive symptoms in Chinese adolescents. Attending a day school and waking up later on weekends may be weak protective factors. Our results suggest that circadian rhythm disturbance, sleep quality, and sleeping arrangement have a significant influence on depressive symptoms among adolescents in China.

Universal depressive symptom screening in middle schools in Istanbul: An epidemiologic study

INTRODUCTION

Depression is a significant public health concern, with severe adolescent morbidity and mortality. Promoting adolescents' mental health is increasingly recognized, and schools are proposed as screening and preventive intervention sites. This cross-sectional study aimed to screen self-reported elevated depressive symptom prevalence among secondary school students in Istanbul, Turkey. The secondary objectives were determining behavioral problems, resilience, positive attitudes, and risk factors associated with depressive symptoms.

METHODS

Data collection was conducted between April-June 2022. Six thousand one hundred ten students from nine randomly selected schools from different city districts were approached. Depression was screened by the Centre for Epidemiological Studies Depression Scale for Children (CES-DC). The Strengths and Difficulties Questionnaire (SDQ) was used for screening behavioral problems and positive attitudes. Resilience was evaluated by the Child and Youth Resilience Measure (CYRM).

RESULTS

The final study sample comprised 2780 participants (response rate 47.7 %) with a mean age of 12.4 ± 1.1 years (females:52.7 %). Elevated depressive symptoms were detected in 31.2 % of the students. Female students exhibited higher scores in CES-DC and total difficulties but lower resilience scores in CYRM than male students. In a multiple regression analysis, female gender, higher total difficulties score, lower resilience score, and lower perceived academic performance significantly predicted CES-DC [F(6,2279) = 421, p < 0.01].

DISCUSSION

Our findings showed high rates of elevated self-reported depressive symptoms in a city sample among Turkish adolescents at middle schools, in addition to coexisting behavioral difficulties and decreased resilience indicating poor psychosocial functioning. Given the prevalent depressive symptoms, screening and intervention programs involving resilience promotion may involve school systems to prevent adolescent depression.

Gender differences in the prevalence, correlated factors and comorbidity of depression in adolescents: a cross-sectional study in Shanghai, China

Background

Prior studies have reported gender differences in the prevalence, comorbidity rates and related factors of depression during adolescence. But the gender differences in depression vary across studies. Besides, the evidence from Chinese adolescent samples is limited. This study aimed to explore gender differences in the depression-related factors, the potential interactions of the associated factors and clinical features of comorbid depression and anxiety among Chinese adolescents.

Methods

A cross-sectional study involving 3,510 participants aged 11 to 16 years from schools (private and public) in Shanghai was conducted with an anonymous paper-and-pencil questionnaire. Children's Depression Inventory (CDI), Child Anxiety Related Emotional Disorders (SCARED), Strengths and Difficulties Questionnaire (SDQ) were used to evaluate depression, anxiety and behavioral and emotional difficulties, respectively. Logistic regression model was used to explore the possible correlated factors of adolescent depression and analyze the interactions of the risk factors.

Results

Our results showed that there was no gender difference in the prevalence rates of depression (χ 2 = 0.047, p = 0.83), but the prevalence of depression in females began to exceed that of males at the ages of 15 and 16. The factors associated with depression varied by gender. Private school was a risk factor for depression only in boys (adjusted OR = 1.842 [95% CI, 1.286-2.636]), whereas girls from nuclear families (adjusted OR = 1.631 [95% CI, 1.156-2.300]) and other family structures (adjusted OR = 2.682 [95% CI, 1.502-4.788]) were more likely to experience depression compared to their peers in extended family structures. Interaction analyses showed there was a negative interaction between abnormal peer problems and 7th grade among boys (adjusted OR = 0.288 [95% CI, 0.086-0.951]). Furthermore, comorbidity rates of depression and anxiety were higher in girls than that in boys (χ 2 = 14.457, p < 0.001). And girls with comorbidity showed increased SDQ peer problems scores (Z = -3.151, p = 0.002).

Conclusion

The findings indicate it is important to develop gender-specific interventions for adolescent depression. And for boys, evaluating peer relationships may be particularly crucial in lower grades. Moreover, recognizing the gender-specific clinical features of comorbid depression and anxiety is important for appropriate clinical diagnosis and targeted treatment.

Prevalence of depressive symptoms among children and adolescents in china: a systematic review and meta-analysis

BACKGROUND

Depression is a significant health concern among children and adolescents. Previous epidemiological studies on depressive symptoms in this population have yielded inconsistent findings. This study aims to systematically estimate the prevalence of depressive symptoms among Chinese children and adolescents.

METHOD

A comprehensive literature search was conducted in both English (PubMed, EMBASE) and Chinese (China National Knowledge Infrastructure, WANFANG) databases from their inception until October 15, 2024. This meta-analysis employed a random-effects model to estimate the pooled prevalence of depressive symptoms.

RESULTS

A total of 439 eligible studies, comprising 1,497,524 participants, were included in the analysis. The pooled point prevalence of depressive symptoms among children and adolescents was found to be 26.17% (95% CI 25.00-27.41%), with significant heterogeneity among studies (I2 = 100%, p < 0.001). The most commonly used scales were the SDS and CES-D; the SDS reported a higher prevalence (28.80%, 95% CI 26.88-30.85%) compared to the CES-D (24.50%, 95% CI 22.49-26.68%). There was no clear temporal trend in the prevalence of depressive symptoms over time (r = 0.03, P = 0.74). The highest pooled prevalence was observed in high school students (28.23%, 95% CI 25.58-31.15%), followed by undergraduate students (27.72%, 95% CI 25.79-29.79%) and middle school students (24.15%, 95% CI 21.61-27.00%). Among the provinces, Inner Mongolia exhibited the lowest prevalence (18.43%, 95% CI 11.98-28.36%), while Qinghai and Tibet had the highest rates at 54.19% and 47.50%, respectively, although only two and one study were included for these regions.

CONCLUSIONS

The detection rate of depressive symptoms in this study aligns closely with global rates for children and adolescents. High school students exhibit a higher prevalence of depressive symptoms compared to other age groups, highlighting the need for effective interventions targeted at this population. There was no clear temporal trend in the prevalence of depressive symptoms. Additionally, the choice of measurement tool is a critical aspect of epidemiological research; standardizing these measurements is essential for enhancing data comparability across studies. Trial Registration International Prospective Register of Systematic Reviews: No. CRD42023455604.

Meal Timing and Depression Among Chinese Children and Adolescents: Cross-Sectional Study

Background

Depression in children and adolescents is a rising concern in China. Dietary behavior is a critical determinant of mental health. Meal timing, or the schedule of meal consumption, has been related to several metabolic disorders. However, the effect of meal timing on mental health is scarce, particularly in children and adolescents who are in a critical period of physical and psychological development.

Objective

This research examined the relationship between meal timing and depression in children and adolescents in China.

Methods

Children and adolescents from grades 1 to 9 were recruited from 16 districts in Shanghai, China, from January 3 to January 21, 2020. Ten schools attended the study. A survey was distributed to the students and their parents to collect demographic and health-related information. Depression was measured by the Children's Depression Inventory-Short Form. Breakfast consumption was analyzed as a binary outcome. Participants were defined as breakfast consumers if they never skipped breakfast during the week. They were otherwise defined as breakfast skippers if they skipped breakfast at least once per week. A similar categorization was applied to analyze food intake proximal to bed. Daily eating windows were calculated using the last food intake time frame-the first food intake time frame. Participants were classified into eating window groups of less than 10 hours, 10-12 hours, and more than 12 hours. A logistic regression model was used to compute the odds ratio (OR) and 95% CI.

Results

A total of 6874 participants were included in the analysis. Participants who skipped breakfast were associated with a 2.70 times higher occurrence of depression (OR 2.70, 95% CI 2.24-3.26; P<.001). The prevalence of depression was 1.28 times higher in participants who ate before bed than in those who never ate before bed (OR 1.28, 95% CI 1.08-1.50; P<.001). The occurrence of depression was 1.37 times higher if the eating time window was shorter than 10 hours (OR 1.37, 95% CI 1.08-1.73; P=.009) and 1.23 times higher if the eating time window was longer than 12 hours (OR 1.23, 95% CI 1.01-1.50; P=.004). The lowest occurrence of depression was observed at 11.5 hours. Subgroup analysis showed that such relationships remained significant in adolescents aged 10 years or older. In children, only skipping breakfast was associated with a higher odds of depression (OR 2.77, 95% CI 1.94-3.96; P<.001).

Conclusions

Breakfast skipping and eating before bed significantly increase the occurrence of depression. The optimal daily eating window to lower the occurrence of depression is 11.5 hours in children and adolescents. Daily eating windows longer than 12 hours or shorter than 10 hours are associated with an elevated occurrence of depression. Current findings advocate evidence-based dietary strategies to prevent and treat depression in children and adolescents.

Identifying the risk of depression in a large sample of adolescents: An artificial neural network based on random forest

BACKGROUND

This study aims to develop an artificial neural network (ANN) prediction model incorporating random forest (RF) screening ability for predicting the risk of depression in adolescents and identifies key risk factors to provide a new approach for primary care screening of depression among adolescents.

METHODS

The data were from a large cross-sectional study conducted in China from July to September 2021, enrolling 8635 adolescents aged 10-17 with their parents. We used the Patient health questionnaire (PHQ-9) to rate adolescent depression symptoms, using scales and single-item questions to collect demographic information and other variables. Initial model variables screening used the RF importance assessment, followed by building prediction model using the screened variables through the ANN.

RESULTS

The rate of depression symptoms in adolescents was 24.6%, and the depression risk prediction model was built based on 70% of the training set and 30% of the test set. Ten variables were included in the final prediction model with a model accuracy of 85.03%, AUC of 0.892, specificity of 89.79%, and sensitivity of 70.81%. The top 10 significant factors of depression risk were adolescent rumination, adolescent self-esteem, adolescent mobile phone addiction, peer victimization, care in parenting styles, overprotection in parenting styles, academic pressure, conflict in parent-child relationship, parental rumination, and relationship between parents.

CONCLUSIONS

The ANN model based on the RF effectively identifies depression risk in adolescents and provides a methodological reference for large-scale primary screening. Cross-sectional studies and single-item scales limit further improvements in model accuracy.

Developmental Trajectories of Mental Health in Chinese Early Adolescents: School Climate and Future Orientation as Predictors

There is growing support for the dual-continua model of mental health, which emphasizes psychopathology and well-being as related but distinct dimensions. Yet, little is known about how these dimensions co-develop from childhood to early adolescence and what factors predict their different trajectories. The current study aimed to identify distinct patterns of mental health in Chinese early adolescents, focusing on both psychopathological symptoms (i.e., depressive symptoms and self-harm behaviors) and subjective well-being (i.e., life satisfaction and affect balance). This study also examined the contributions of school climate and future orientation to these trajectories. A total of 1,057 students (Mage = 11.88, SDage = 1.67; 62.1% boys) completed four assessments over two years, with six-month intervals. Using parallel-process latent class growth modeling, we identified four groups: Flourishing (32.5%), Languishing (43.8%), Troubled with Stable Depressive Symptoms (16.1%), and Troubled with Increasing Self-Harm Risk (7.6%). Furthermore, school climate and future orientation contributed to adolescents' membership in these trajectories, either independently or jointly. Specifically, higher levels of future orientation combined with higher school climate were associated with a lower likelihood of belonging to the Troubled with Increasing Self-Harm Risk trajectory, compared to the Flourishing group. Our findings identified four distinct mental health trajectories consistent with the dual-continua model, and demonstrated that the development of psychopathology and well-being were not always inversely related (e.g., the Languishing group). Adolescents with unique developmental profiles may benefit from tailored intervention strategies that build on the personal and environmental assets of the adolescent.

Peer effects on rural children's depression: do online games matter?

With the increasing prevalence of depression among children and adolescents, understanding the role of peer contagion in the spread of emotional distress is a critical area of research. The aim of this study is to examine the effect of classmates' depression on a rural child's own depression in China (aged 9-17, N = 1777). The study controls for possible endogeneity of peer effects through the instrumental variable method (the Wald F statistic is significant at the 1% level) and random class assignment data (all students and teachers are randomly assigned to classes).The results indicate that when the average depression score of a rural child's classmates increases by 1 point, that child's own depression score is likely to increase by 0.345 points (p value < .01).This study further finds that the contagion of depression among classmates is more severe for girls and children who play online games, and less severe for children who are cheerful and good-humored. Online games may be an important mechanism through which peer effects operate. Children's classmates' negative emotions are found to increase the occurrence of the children's internalizing behavior in online games, in turn increasing the occurrence of negative emotions in these children themselves.

Inter-relationships between suicidality and depressive symptoms among children and adolescents experiencing crisis: A network perspective

OBJECTIVES

Suicidality and depressive symptoms have emerged as major mental health issues reported among children and adolescents experiencing crises. In light of these concerns, this study was conducted to elucidate interrelationships between depressive symptoms and suicidality at an item level within this population during the COVID-19 pandemic, a worldwide public health crisis affecting children and adolescents.

METHOD

A cross-sectional study design was used. Primary and secondary school students completed the Children's Depression Inventory - Short Version (CDI-S) and two standard suicidality questions tapping suicidal ideation and suicide plans, respectively. A network analysis was performed to examine inter-connections between depressive symptoms and suicidality.

RESULTS

A total of 5380 students participated in the study. Prevalence of suicidal ideation and suicide plans were 12.8 % (95 % CI = 11.9 %-13.7 %) and 9.9 % (95 % CI = 9.2 %-10.8 %), respectively; the prevalence of depressive symptoms was 41.2 % (95%CI = 39.8 %-42.5 %). The network analysis identified CDI4 (self-hatred) as the most influential node with the highest centrality, followed by CDI8 (loneliness), CDI5 (crying), and CDI1 (sadness). Additionally, CDI5 (crying), CDI1 (sadness), CDI4 (self-hatred), and CDI10 (feeling unloved) were the most meaningful nodes linking depressive symptoms with suicidality.

CONCLUSIONS

Critical depressive symptoms linked with suicidality among children and adolescents living through the COVID-19 pandemic included self-hatred, loneliness, crying, and sadness. Interventions that target these depressive symptoms may have increased utility in reducing the risk of suicidality within this population.

Vulnerable conditions syndemic, depression, and suicidal ideation among school children in China: cross-sectional census findings

BACKGROUND

Mental health issues (depression and suicidal ideation) are increasingly common in children and emerge as escalating public health concerns. The syndemics that underline the importance of risk factor clustering provides a framework for intervention, but there is a lack of research on syndemics involving the adverse interactions of children's mental health problems. This study therefore examined the cumulative and synergistic effects of vulnerable conditions on depression and suicidal ideation among children in China.

METHODS

A mental health screening census of students in grades 5-12 was conducted from November 2022 to January 2023 in Nanling County, Anhui Province, China. The prevalence and co-occurrence of vulnerable conditions (unfavorable parental marital status, left-behind experience, bullying victimization, and self-harm behavior), depression, and suicidal ideation and the cumulative and synergistic effects of vulnerable conditions on depression and suicidal ideation were explored.

RESULTS

Nearly a quarter of students (24.8%) reported at least two syndemic conditions. Overall, the prevalence of depression and suicidal ideation were 20.2% and 24.2% respectively. The odds of depression and suicidal ideation were higher for children with one or more vulnerable conditions and were ten times higher for children with three or more vulnerable conditions compared with those without any vulnerable condition. These four vulnerable conditions can increase the odds of depression and suicidal ideation by interacting synergistically with each other.

CONCLUSION

Our findings signal the importance of addressing mental health syndemics among children in China by simultaneously considering concurrent vulnerable conditions.

Bidirectional relationship between borderline personality features and depressive symptoms in early adolescence: A school-based cohort study

Depressive symptoms is a public health concern worldwide, and adolescents may experience more depressive symptoms. Although the relationship between borderline personality features (BPFs) disorder and depressive symptoms has been established, it is unclear whether the longitudinal relationship between them is unidirectional or bidirectional and whether these symptoms are different between boys and girls. In this study, Chinese adolescents (1608 total and separately 972 for boys and 636 girls) were enrolled between September 2019 and September 2021, and we analyzed the data using a cross-lagged model. The results suggested a bidirectional relationship between BPFs and depressive symptoms in boys (β = 0.191 and 0.117, P < 0.001). However, in girls, depressive symptoms were predicted based on BPFs (β = 0.225, P < 0.001), whereas BPFs were not predicted based on depressive symptoms (β = 0.035, P = 0.535). The findings suggest that borderline personality traits and depressive symptoms are only bilaterally associated in girls, which also provides important evidence for the treatment and prevention of adolescent BPFs and depressive symptoms.

Using a longitudinal network structure to subgroup depressive symptoms among adolescents

BACKGROUND

Network modeling has been proposed as an effective approach to examine complex associations among antecedents, mediators and symptoms. This study aimed to investigate whether the severity of depressive symptoms affects the multivariate relationships among symptoms and mediating factors over a 2-year longitudinal follow-up.

METHODS

We recruited a school-based cohort of 1480 primary and secondary school students over four semesters from January 2020 to December 2021. The participants (n = 1145) were assessed at four time points (ages 10-13 years old at baseline). Based on a cut-off score of 5 on the 9-item Patient Health Questionnaire at each time point, the participants were categorized into the non-depressive symptom (NDS) and depressive symptom (DS) groups. We conducted network analysis to investigate the symptom-to-symptom influences in these two groups over time.

RESULTS

The global network metrics did not differ statistically between the NDS and DS groups at four time points. However, network connection strength varied with symptom severity. The edge weights between learning anxiety and social anxiety were prominently in the NDS group over time. The central factors for NDS and DS were oversensitivity and impulsivity (3 out of 4 time points), respectively. Moreover, both node strength and closeness were stable over time in both groups.

CONCLUSIONS

Our study suggests that interrelationships among symptoms and contributing factors are generally stable in adolescents, but a higher severity of depressive symptoms may lead to increased stability in these relationships.

Risk and Protective Factors of Depression in Family and School Domains for Chinese Early Adolescents: An Association Rule Mining Approach

Depression is one of the most common psychological problems in adolescence. Familial and school-related factors are closely related to adolescents' depression, but their combined effects need further examination. The purpose of this study was to explore the combined effects of risk/protective factors of depression in family and school domains using a sample of Chinese adolescents differing in gender, age group and left-behind status. A total of 2455 Chinese students in primary and secondary school participated in the cross-sectional survey and reported multiple risk/protective factors in family and school environments and depressive symptoms. Association rule mining, a machine learning method, was used in the data analyses to identify the correlation between risk/protective factor combinations and depression. We found that (1) Family cohesion, family conflict, peer support, and teacher support emerged as the strongest factors associated with adolescent depression; (2) The combination of these aforementioned factors further strengthened their association with depression; (3) Female gender, middle school students, and family socioeconomic disadvantages attenuated the protective effects of positive relational factors while exacerbating the deleterious effects of negative relational factors; (4) For individuals at risk, lack of mental health education resources at school intensified the negative impact; (5) The risk and protective factors of depression varied according to gender, age stage and left-behind status. In conclusion, the findings shed light on the identification of high-risk adolescents for depression and underscore the importance of tailored programs targeting specific subgroups based on gender, age, or left-behind status.

Gender-specific co-developmental trajectories of internalizing and externalizing problems from middle childhood to early adolescence: Environmental and individual predictors

This study aimed to identify gender-specific co-developmental trajectories of internalizing and externalizing problems from middle childhood to early adolescence, along with key environmental and individual predictors among Chinese youth. A total of 1653 Chinese elementary school students (M age = 9.40; SD = 0.51; 54.57% boys) participated in assessments at six time points, using 6-month assessment intervals. Parallel process latent class growth modeling identified four trajectories for boys: Congruent-low (65.74%), moderate-decreasing internalizing and moderate-stable externalizing problems (18.40%), high increasing-internalizing and low-stable externalizing problems (8.20%), and high decreasing-internalizing and low-stable externalizing problems (7.65%). Three trajectories were identified for girls: Congruent-low (81.09%), moderate co-occurring (7.19%), and high increasing-internalizing and low-stable externalizing problems (11.72%). Multivariate logistic regression analyses revealed that peer victimization served as an environmental risk predictor for the adverse co-developmental trajectories of internalizing and externalizing problems for boys and girls. High sensation-seeking and low self-control served as individual risk variables predicting the trajectories of high increasing-internalizing and low-stable externalizing problems, and low self-control also predicted the trajectories of high decreasing-internalizing and low-stable externalizing problems for boys. The findings highlight the importance of gender differences in understanding the progression of internalizing and externalizing problems and inform effective strategies for prevention and intervention.

More prevalent and more severe: gender differences of depressive symptoms in Chinese adolescents

BACKGROUND

Adolescent depression has become a leading problem around the world, especially as the COVID-19 pandemic has remained prevalent and heavily influenced people's mental health. While gender difference has always been a topic in the field of psychiatry, there are cultural differences across the world that must be taken into account. The current study is examining gender differences in symptoms of Chinese adolescents with depression.

METHODS

The sample was obtained from a total of 574 adolescent patients (172 males and 402 females) diagnosed with depression following the DSM-IV/ICD-10 diagnostic criteria; patients who also had other severe mental or physical illnesses were excluded. The ages of participants ranged from 10 to 19 years. Additionally, independent t-test and one-way ANOVA were used to examine differences in symptoms between different gender and age groups. The LPA was used to examine whether females and males were having different patterns of symptoms.

RESULTS

Our analysis showed that compared to males, females exhibited higher rates of depression and more severe depressive symptoms across age groups. Likewise, the analysis also revealed an earlier onset of depression among Chinese adolescents compared to that in Western countries in previous studies. Finally, the LPA showed that mild to moderate depression was predominant in male patients, while severe depression was predominant in female patients.

CONCLUSION

This study highlights the gender differences in the prevalence and severity of depressive symptoms in Chinese adolescents. The current study highlighted the importance of gender equality and developing gender-friendly interventions in maintaining the overall mental health of adolescents in China.

Peer effects of depression between left-behind and non-left-behind children: quasi-experimental evidence from rural China

PURPOSE

The aim of the study is to investigate the interactive influence of depression on left-behind (LB) and non-left-behind (NLB) children from the perspective of peer effects. The roles of teachers, parents, and friends are also explored.

METHODS

Data on 1817 children, 1817 parents, and 55 teachers were obtained from a field survey in December 2021. All students in the sample were randomly assigned to classrooms. A peer effect model and OLS methods were used to estimate the peer influence of depression. Robustness tests were conducted by randomly removing schools from the sample.

RESULTS

Depression was contagious among different groups of rural children, and the peer effect of the NLB children's depression played a dominant role. Both LB and NLB children were more affected by their NLB classmates' depression. LB children were not significantly affected by depression in other LB children. This conclusion remains robust after robustness testing. In addition, heterogeneity analysis showed that outgoing and cheerful teachers, effective parent-child communication and high-quality friendship all alleviated peer influence on depression.

CONCLUSIONS

LB children have more severe depression than NLB children, but LB children are more affected by depression in their NLB peers. Policymakers should train teachers to engage in positive communication with students to improve mental health in children. In addition, this article recommends that children move and live with their parents when family conditions permit.

Exposure to ambient air pollution with depressive symptoms and anxiety symptoms among adolescents: A national population-based study in China

BACKGROUND

Air pollution threatens adolescents' physical health and adversely affects adolescents' mental health. Previous studies mostly focused on the effects of air pollution on physical health, but there were few studies on the effects of air pollution on mental health.

METHODS

We collected scores of depressive symptoms and anxiety symptoms from 15,331 adolescents from 43 schools in eleven provinces in September and November 2017. The data on air pollution comes from the China High Air Pollutants dataset, which included concentrations of particulate matter with diameters of ≤1.0 μm (PM₁), diameters of ≤2.5 μm (PM_2.5), and diameters of ≤10 μm (PM₁₀), as well as nitrogen dioxide (NO₂). The associations between air pollution and depressive and anxiety symptoms among adolescents were estimated using generalized linear mixed models.

RESULTS

Depressive and anxiety symptoms among Chinese adolescents were 16% and 32%, respectively. In the adjusted model, an interquartile range (IQR) increase from PM_2.5 was associated with the odds of anxiety symptoms [odds ratio (OR) = 1.01; 95% confidence interval (CI): 1.00, 1.01, P = 0.002]. Also, an IQR increase in PM₁₀ was significantly associated with the odds of anxiety symptoms (OR = 1.01; 95% CI: 1.00, 1.01, P = 0.029). Compared with the lowest quartile, the adjusted OR of anxiety symptoms for the highest quartile of PM_2.5 and PM₁₀ were 1.29 (1.15, 1.44) and 1.23 (1.06, 1.42), respectively. In addition, the association between PM_2.5 and depressive symptoms was significant. The robustness of the results was also confirmed by stratification and sensitivity analyses.

CONCLUSIONS

Exposure values for airborne particulate matter were associated with depressive symptoms and anxiety symptoms in adolescents, particularly for PM_2.5 and PM₁₀ with anxiety symptoms among adolescents.

Childhood adversity and depression in Chinese populations: A multilevel meta-analysis of studies using the Childhood Trauma Questionnaire (CTQ)

To estimate the association between childhood adversity (CA) and depression in Chinese populations in studies using the Childhood Trauma Questionnaire (CTQ), a literature retrieval from established databases between 2005 and 2020 was conducted. A total 40 eligible studies with 145 effect sizes were included in subsequent analyses. Using a multi-level meta-analysis, we found a pooled effect size of r = 0.24, p < 0.001, CI = [0.20, 0.27] for the association between CA and depression. No publication bias was shown by Egger's test, t (160) = -0.27, p = 0.79. The between-study variance was moderate but significant, with 39.75% of the total variance attributable to differences between studies. Results of moderation analysis based on subtypes of CA showed that emotional abuse was associated most strongly with depression. In addition, results of moderation analysis focusing on geographic regions and CTQ subscales showed that the association between SA and depression was stronger in Southern than Central China. Our findings demonstrated clearly the advantages of using a multi-level approach to arrive at a more accurate estimate of pooled effect sizes. The differential associations between CTQ subscales and depression and the moderating effect of geographic regions on the association between sexual abuse and depression point clearly to the need of increased attention to the effects of CA subtypes and socio-cultural factors in future research on CA and mental disorders. These findings provide a preliminary empirical basis for researchers to address specific hypotheses of associations between CA subtypes and specific mental disorders in China.

Continuity and Stability of Child and Adolescent Depressive Symptoms in South Korea: A Meta-analysis of Longitudinal Studies

Many adolescents in South Korea experience risk-level depressive symptoms due to stress caused by personal and environmental changes. Prior studies investigated various characteristics of depressive symptoms. However, it is unclear when the mean level of depression changes with the development of children and adolescents and whether it is stable relative to one another over time. Thus, it is necessary to closely understand the continuity and stability of depressive symptoms across developmental stages in children and adolescents. In this study, continuity refers to the consistency in a group's mean level of depressive symptoms over time; however, stability refers to the consistency in the relative placement of the levels of depressive symptoms of individuals within a group over time. To comprehensively understand previous studies, this meta-analysis compiled data from 95 South Korean longitudinal studies (N = 200,338; 49.7% females) published between 2000 and 2021. Data were analyzed using a three-level random effects model with a 1-year interval for each age group to integrate effect sizes, followed by a generalized additive mixed model integrating age as a continuous variable. The results indicate that the mean-level continuity of depressive symptoms was relatively high and the rank-order stability was low for the children in elementary school (including both upper and lower grades). Additionally, as the adolescents aged, the mean-level continuity of depressive symptoms slightly decreased while stability increased. When entering early adulthood, the continuity and stability of depressive symptoms converged without significant change. As a result of moderating effect, the female-only group indicated a high level of continuity and stability than the male-only or mixed group. The findings highlight that South Korean childhood is a period of relatively high continuity and low stability. Moreover, female students' depressive symptoms fluctuate more than those of males, suggesting the need for providing effective and appropriate help.

Detecting depression of Chinese microblog users via text analysis: Combining Linguistic Inquiry Word Count (LIWC) with culture and suicide related lexicons

INTRODUCTION

In recent years, research has used psycholinguistic features in public discourse, networking behaviors on social media and profile information to train models for depression detection. However, the most widely adopted approach for the extraction of psycholinguistic features is to use the Linguistic Inquiry Word Count (LIWC) dictionary and various affective lexicons. Other features related to cultural factors and suicide risk have not been explored. Moreover, the use of social networking behavioral features and profile features would limit the generalizability of the model. Therefore, our study aimed at building a prediction model of depression for text-only social media data through a wider range of possible linguistic features related to depression, and illuminate the relationship between linguistic expression and depression.

METHODS

We collected 789 users' depression scores as well as their past posts on Weibo, and extracted a total of 117 lexical features via Simplified Chinese Linguistic Inquiry Word Count, Chinese Suicide Dictionary, Chinese Version of Moral Foundations Dictionary, Chinese Version of Moral Motivation Dictionary, and Chinese Individualism/Collectivism Dictionary.

RESULTS

Results showed that all the dictionaries contributed to the prediction. The best performing model occurred with linear regression, with the Pearson correlation coefficient between predicted values and self-reported values was 0.33, the R-squared was 0.10, and the split-half reliability was 0.75.

DISCUSSION

This study did not only develop a predictive model applicable to text-only social media data, but also demonstrated the importance taking cultural psychological factors and suicide related expressions into consideration in the calculation of word frequency. Our research provided a more comprehensive understanding of how lexicons related to cultural psychology and suicide risk were associated with depression, and could contribute to the recognition of depression.

Parental Depressive Symptoms, Parent Attributional Style, and Child Coping as Predictors of Depressive Symptoms in Children of Parents with Anxiety or Mood Disorders

Few studies have examined the effects of parental depressive symptoms on children in China. The present study examined the relationships between parental depression, parental attributional style, children's coping strategies and 5-12-year-old children's depressive symptoms in a sample of Chinese children whose parents had been diagnosed with an anxiety or a mood disorder. The present study confirmed that children of parents with anxiety or mood disorders would show high levels of depressive symptoms. Parents with an optimistic or neutral attributional style rated their children as showing fewer depressive symptoms than parents with a pessimistic style. This study showed a significant positive relationship between children's disengagement coping and children's reports of depressive symptoms. The findings highlight the need for early identification of, and support and intervention programs for, parents suffering from depression and children of depressed parents as a means of protecting the psychological well-being of both parents and children.

A review of attentional bias modification trainings for depression

Negative attentional bias is a basic character of depression. The attentional bias modification training (ABMT), being a highly promising and easy-to-use depression intervention technique, has attracted much attention to alleviate depressive symptoms in recent years. However, the effectiveness of ABMT programs was mixed across studies, since it remained unclear the underlying mechanisms of ABMT on alleviating depressive symptoms. We systematically analyzed the main ABMT paradigms to clarify possible mechanisms of effective training and reasons of ineffective training. Valid ABMT programs might alleviate depressive symptoms through regulating self-related rumination or two subcomponents of attentional bias: facilitated attention and impaired attentional disengagement. The reasons for the invalidity of ABMT mainly included the suboptimal design of training procedures, mixed effects of participants' personal characteristics, and the unclear relationship between attentional bias and depression. The ABMT is promising for alleviating depressive symptoms, but training procedures are required to be improved to obtain stable training effects.

Attitude toward COVID-19 vaccines and its association with depressive symptoms in 386,924 Chinese primary school students during COVID-19 epidemic normalization

AIM

Before Chinese primary school students were generally vaccinated against the COVID-19 vaccine, this study evaluated the willingness of this population and its influencing factors before vaccination, and evaluate its association between attitudes toward the vaccine and depressive symptoms.

METHODS

A cross-sectional study involved 386,924 primary school students using a cluster sampling method during May 21-27, 2021. The Chinese version of the Children Depression Inventory (CDI) was used to assess depressive symptoms. Multiple logistic regression analysis models were used to estimate the relationship between attitudes toward COVID-19 vaccines and depressive symptoms.

RESULTS

Among the participants, the prevalence of depressive symptoms was higher in higher grades. The prevalence was higher in fifth and sixth grade students than third and fourth grade students and first and second grades (10.22% vs. 6.07% vs. 3.04%). In addition, 20.79% of students do not know whether the vaccine can protect him from the COVID-19 infection, and 40.60% of students do not know whether the vaccine is safe. Of note, in terms of attitudes toward COVID-19 vaccines, students with more positive attitudes have a lower risk of depressive symptoms (adjusted odds ratio (aOR) = 0.151; 95% confidence interval (CI): 0.140-0.164).

CONCLUSION

Based on these findings, it is necessary for the government and schools to promote vaccine safety and reliability information in a timely manner to increase vaccination uptake.

Abnormal degree centrality in first-episode medication-free adolescent depression at rest: A functional magnetic resonance imaging study and support vector machine analysis

BACKGROUND

Depression in adolescents is more heterogeneous and less often diagnosed than depression in adults. At present, reliable approaches to differentiating between adolescents who are and are not affected by depression are lacking. This study was designed to assess voxel-level whole-brain functional connectivity changes associated with adolescent depression in an effort to define an imaging-based biomarker associated with this condition.

MATERIALS AND METHODS

In total, 71 adolescents affected by major depressive disorder (MDD) and 71 age-, sex-, and education level-matched healthy controls were subjected to resting-state functional magnetic resonance imaging (rs-fMRI) based analyses of brain voxel-wise degree centrality (DC), with a support vector machine (SVM) being used for pattern classification analyses.

RESULTS

DC patterns derived from 16-min rs-fMRI analyses were able to effectively differentiate between adolescent MDD patients and healthy controls with 95.1% accuracy (136/143), and with respective sensitivity and specificity values of 92.1% (70/76) and 98.5% (66/67) based upon DC abnormalities detected in the right cerebellum. Specifically, increased DC was evident in the bilateral insula and left lingual area of MDD patients, together with reductions in the DC values in the right cerebellum and bilateral superior parietal lobe. DC values were not significantly correlated with disease severity or duration in these patients following correction for multiple comparisons.

CONCLUSION

These results suggest that whole-brain network centrality abnormalities may be present in many brain regions in adolescent depression patients. Accordingly, these DC maps may hold value as candidate neuroimaging biomarkers capable of differentiating between adolescents who are and are not affected by MDD, although further validation of these results will be critical.

The impact of the COVID-19 pandemic on the mental health and academic performance of medical postgraduates

Background

The Coronavirus disease 2019 (COVID-19) has presented a major challenge to the health, economic, and social sectors of the entire world. This study aimed to investigate the mental health and academic performance of medical postgraduates during the COVID-19 pandemic in China.

Methods

A cross-sectional online survey was conducted from March 20 to April 20, 2022 at the Zhejiang University School of Medicine in China. The questionnaire consisted of three parts: general information, mental health and academic performance. Mental health outcomes were assessed according to the Generalized Anxiety Scale (GAD-7) and the Patient Health Questionnaire-9 Scale (PHQ-9).

Results

A total of 153 valid questionnaires were obtained. Of the medical postgraduates in this study, (1) 41.8% had no anxiety symptoms. In addition, 51.0% had mild anxiety symptoms during the COVID-19 pandemic. None of the participants had a severe anxiety or depression disorder; (2) Females experienced significantly more symptoms in mental health measure scores than the males (P < 0.01); (3) 78.4% believed that the COVID-19 pandemic had varying degrees of impact on their academics. Doctoral postgraduates showed greater academic stress, and they were more worried about not meeting graduation standards than the master's postgraduates (P < 0.05). There were no significant differences between the surgical postgraduates and internal postgraduates in either mental health or academic performance.

Conclusions

Our study found that the COVID-19 pandemic has had a mild impact on the mental health and academic performance of medical postgraduates in China. Females experienced significantly more symptoms on mental health measure scores than the males. Doctoral postgraduates showed greater academic stress than the master's postgraduates. There is uncertainty regarding how long this COVID-19 situation will persist and increasing recognition that there may be periods of recurrence in the future. We need more active curricular innovation and transformation to maintain and improve medical postgraduates' mental health and academic performance.

Longitudinal associations among academic achievement and depressive symptoms and suicidal ideation in elementary schoolchildren: disentangling between- and within-person associations

Prior cross-sectional and unidirectional longitudinal research has investigated the associations among academic achievement, depressive symptoms, and suicidal ideation without distinguishing between-person effects from within-person effects. Our study aimed to examine the longitudinal relations among academic achievement, depressive symptoms, and suicidal ideation in a sample of elementary school children at the within-person level using cross-lagged panel models (CLPMs) and random intercept cross-lagged panel models (RI-CLPMs). Also, multiple models replicated these findings by using three measures of academic achievement (i.e., objective academic achievement, subjective academic achievement, and teacher-assigned academic achievement). A sample of 715 Chinese elementary schoolchildren completed self-report measures of subjective academic achievement, depressive symptoms, and suicidal ideation on five occasions, using 6-month intervals. Objective academic achievement data were obtained from school records and teacher-assigned academic achievement data were reported by teachers. The results showed that: (a) In CLPMs, objective academic achievement negatively predicted suicidal ideation. However, RI-CLPMs supported the negative effect of suicidal ideation on objective academic achievement. (b) The CLPMs revealed reciprocal associations between subjective and teacher-assigned academic achievement and depressive symptoms, respectively. However, RI-CLPMs only provided support for the negative effect of depressive symptoms on subjective academic achievement. (c) Both the CLPMs and the RI-CLPMs showed bidirectional relations between depressive symptoms and suicidal ideation. These findings highlight that mental health problems (e.g., depressive symptoms and suicidal ideation) serve as antecedents of academic performance and that it is beneficial to distinguish between between-person and within-person effects in research informing the development of prevention and intervention programs.

Exposure to domestic violence and depressive symptoms in Chinese adolescents: Sleep problems as a mediator

INTRODUCTION

Exposure to domestic violence has been shown to be an important risk factor of depression in western studies, but has received less attention in Chinese context. Additionally, the underlying mechanism of its link with depression has not been fully studied. With a longitudinal design, we examined the mediating role of sleep problems between exposure to domestic violence and depressive symptoms in Chinese adolescents, and further considered potential age and gender differences in the direct and indirect pathways.

METHODS

Participants were recruited from primary and junior high schools in China and were surveyed across two waves with a 6-month interval. There were 1949 participants at Wave 1 and 1283 at Wave 2. Structural equation model was conducted to examine the mediating role of sleep problems in the association between exposure to domestic violence and depressive symptoms. Multigroup analyses were applied to test potential age and gender differences in the process.

RESULTS

Participants' exposure to domestic violence predicted increasing sleep problems, which further predicted more depressive symptoms. Age and gender moderated the indirect pathway from exposure to domestic violence to depressive symptoms through sleep problems, such that the mediating effects of sleep problems were significantly stronger in early-age adolescents and girls than middle-age ones and boys.

IMPLICATION

Parents should avoid the use of corporal punishment and protect their children from domestic violence. For adolescents who have underwent domestic violence, parents and clinicians might consider to decrease their depressive symptoms by ameliorating sleep problems, especially for the early-age adolescents and girls.

Academic Performance and the Link with Depressive Symptoms among Rural Han and Minority Chinese Adolescents

The objectives of this paper were to examine the risk of depression and depressive symptoms among Han and minority children and adolescents in rural China, the links between academic performance and depressive symptoms, and the prevalence of these links among specific subgroups. A total of 8392 4th, 5th, and 6th grade students at 105 sample rural schools in eight low-income counties and districts in a prefectural-level city in Southwestern China were randomly selected using a three-step sampling strategy. A total of 51% of the sample were female (SD = 0.50), and the age range was 7 to 19 years (mean = 11.35 years; SD = 1.05). Using the Patient Health Questionnaire 8-item depression scale, the prevalence of depressive symptoms in the sample was assessed, while data on students' academic performance (standardized math test) and demographic characteristics were also collected. Our results show that the rates of major depression were 19% for Han students, 18% for Tibetan students, and 22% for Yi students; the rates of severe depression were 2% for Han and Tibetan students, and 3% for Yi students. Yi students were at significantly higher risks for major and severe depression than Han students. We conducted multivariate regression and heterogeneous analyses. Academic performance was negatively and significantly correlated to depressive symptoms. Across the whole sample, students with lower math scores, minority students, boys, younger students, and students with migrant parents were most vulnerable to depressive symptoms. The heterogeneous analysis suggests that among poor-performing students, subgroups at higher risk for depression include boys, non-boarding students, and students whose mothers had graduated from high school or above. These findings indicate a need to improve mental health outcomes of rural Han and minority primary school students, targeting academic performance for possible intervention.

Review: Mental health impacts of the COVID-19 pandemic on children and youth - a systematic review

BACKGROUND

The COVID-19 pandemic has posed an unprecedented threat to global mental health. Children and adolescents may be more susceptible to mental health impacts related to their vulnerable developmental stage, fear of infection, home confinement, suspension of regular school and extracurricular activities, physical distancing mandates, and larger scale threats such as global financial recessions and associated impacts. Our objective was to review existing evidence of the COVID-19 pandemic's global impact on the mental health of children and adolescents <19 years of age and to identify personal and contextual factors that may enhance risk or confer protection in relation to mental health outcomes.

METHODS

We conducted a search of peer-reviewed and preprint research published in English from January 1, 2020, to February 22, 2021. We included studies collecting primary data on COVID-19-related mental health impacts on children and adolescents. We graded the strength of included articles using the Oxford Centre for Evidence-Based Medicine rating scheme.

RESULTS

Our search and review yielded 116 articles presenting data on a total of 127,923 children and adolescents; 50,984 child and adolescent proxy reports (e.g., parents, healthcare practitioners); and >3,000 chart reviews. A high prevalence of COVID-19-related fear was noted among children and adolescents, as well as more depressive and anxious symptoms compared with prepandemic estimates. Older adolescents, girls, and children and adolescents living with neurodiversities and/or chronic physical conditions were more likely to experience negative mental health outcomes. Many studies reported mental health deterioration among children and adolescents due to COVID-19 pandemic control measures. Physical exercise, access to entertainment, positive familial relationships, and social support were associated with better mental health outcomes.

CONCLUSIONS

This review highlights the urgent need for practitioners and policymakers to attend to and collaborate with children and adolescents, especially those in higher risk subgroups, to mitigate short- and long-term pandemic-associated mental health effects.

Rates, perceptions and predictors of depression, anxiety and Post Traumatic Stress Disorder (PTSD)-like symptoms about Covid-19 in adolescents

Increasing evidence has shown that the Covid-19 outbreak, and subsequent school closures and exam cancellations that followed, has impacted adolescent mental health. The current cross-sectional study examined rates of depression, anxiety and Post Traumatic Stress Disorder (PTSD)-like symptoms about Covid-19 in adolescents and whether current or past mental health support, additional support in school, keyworker status, poorer household relationships since the outbreak of Covid-19 or reduced physical activity were associated with elevated levels of depression, anxiety or PTSD-like symptoms. Lastly, it examined perceived changes in mental health due to the Covid-19 pandemic, school closures and the cancellation of exams. A total of 899 adolescents (14–18 years) took part in the ’in isolation instead of in school’ (INISS) project. Findings indicated that older adolescents, females, those who currently or previously received mental health support or additional support in school and adolescents who reported poorer relationships at home since Covid-19 were more likely to meet clinical threshold levels for their mental health. Adolescents highlighted worsening of their mental health due to Covid-19 and school closures with mixed positive and negative impact of exam cancellations. Adolescents experiencing clinical threshold levels of depression and anxiety uniquely reported worsening of their mental health since the Covid-19 pandemic, school closures and exam cancellations. Understanding the rates, perceptions and factors associated with increases in depression, anxiety and PTSD-like symptoms in adolescents during the Covid-19 pandemic will inform national policy in supporting adolescent mental health and recovery from the Covid-19 pandemic.

Depressive Symptoms Among Children and Adolescents in China During the Coronavirus Disease-19 Epidemic: A Systematic Review and Meta-Analysis

Background

The Coronavirus Disease-19 (COVID-19) pandemic negatively impacts mental health. Some published studies have investigated the prevalence of depression among children and adolescents in China during the pandemic. However, the results vary widely. We aimed to systematically analyze and estimate the prevalence of depressive symptoms and attempted to reveal the reasons for prevalence variety in previous studies.

Methods

Published studies were searched in PubMed, Embase, Cochrane Central, the Chinese Scientific Journal Database (VIP Database), China National Knowledge database (CNKI), and the WanFang database from December 2019 to May 2021. The quality of all included studies was assessed by the Joanna Briggs Institute (JBI) checklist and the American Agency for Health Care Quality and Research's (AHRQ) cross-sectional study quality evaluation items. Meta-analysis was performed using random-effects modeling.

Results

Of the 1,708 references screened, 13 related reports that involve 41,729 participants were included. The results suggested that the pooled prevalence of depressive symptoms among Chinese children and adolescents during the COVID-19 epidemic was 28.6%. Subgroup analyses showed that the pooled prevalence was highest among the studies using the Patient Health Questionnaire (PHQ)-9 (46.8%) and lowest among these using Depression Self-Rating Scale for Children (DSRSC) (11.4%). All studies using PHQ-9 set the cutoff at 5 points instead of 10. The pooled prevalence of studies that include primary school students was lower (16.5%) than that of studies excluding primary school students (39.1%).

Conclusion

The meta-analysis suggests that depressive symptoms were relatively prevalent among Chinese children and adolescents during COVID-19, especially among the secondary school students. The suitable screening tools and cutoff should be carefully chosen in the survey.

Children and adolescents' sleep patterns and their associations with mental health during the COVID-19 pandemic in Shanghai, China

BACKGROUND

School closures and home confinement due to the ongoing COVID-19 pandemic may lead to disrupted sleep patterns. Consequently, it could increase the risk of children and adolescents' mental health disorders.

METHODS

In this prospective study, we randomly selected ten schools in Shanghai and conducted cluster sampling of students from each school. The first wave of the survey was conducted between January 3 and 21, 2020. Approximately two months after the COVID-19 outbreak declared, a second wave of the survey was conducted. In total, 2427 individuals were surveyed in both waves using the same sampling method. Participants' mental health status (depression, anxiety and stress), sleep patterns and other demographic information were measured in both waves. Multivariate regression analysis was used to examine the associations between sleep patterns and mental health status.

RESULTS

During the COVID-19 pandemic, a total of 873 participants (19.9%), 1100 participants (25.1%), and 670 participants (15.3%) reported depression, anxiety, and stress symptoms, respectively. Significant changes of both sleep duration and sleep-wake cycle patterns were observed before and during the COVID-19 pandemic. Moreover, shorter sleep duration and late to rise patterns (including early to bed late to rise and late to bed late to rise) were found to be associated with higher odds of having mental illnesses during the pandemic.

CONCLUSION

These results suggest there is a pressing need to monitor children's and adolescents' health behavior and mental health and develop timely evidence-based strategies and interventions to mitigate adverse behavioral and psychological impacts caused by these unprecedented challenges.

Prevalence and Associated Factors for Elevated Depressive Symptoms in 386,924 Primary Students during the COVID-19 Pandemic Normalization in China

We aimed to assess the prevalence of elevated depressive symptoms and its associated factors during the coronavirus disease 2019 (COVID-19) pandemic among primary students in China. We included 386,924 students aged 6–12 years from three cities in Henan province, China, over the period 21–27 May 2021. The overall prevalence of depressive symptoms was 5.8%. Participants with high depressive symptoms were more likely to be senior urban primary students, and exhibited an insignificant increase in hand washing frequency, non-mask wearing behavior, higher error rates of cognition tests, and greater levels of worry and fear. The associated factors for high depressive symptoms were found to include age, sex, grade, location, worry level, fear level, cognitive status, and change in lifestyle after gaining knowledge about COVID-19. Our results suggest that governments need to focus on factors affecting the mental health of school-age children while combating COVID-19, as it would facilitate better decision making on the international and national level.

Meta-analysis of association between TPH2 single nucleotide poiymorphism and depression

Tryptophan hydroxylase 2 (TPH2) plays a crucial role in the human brain. Although the association between the TPH2 gene and depression has been suggested in previous meta-analyses, studies based on Chinese subjects are often neglected. Therefore, we included some previous studies based on Chinese subjects to explore the relationship between TPH2 polymorphisms and depression via conducting an extensive meta-analysis. We reviewed 40 research papers that included data on TPH2 gene single nucleotide polymorphisms (SNPs) from 5766 patients with depression and 5988 healthy subjects. The analysis showed an association between polymorphisms in the TPH2 gene and depression, and some results were significant in 24 studies that included Chinese Han study participants. The results of our meta-analysis showed that rs4570625, rs17110747, rs120074175, rs4290270, rs120074175, and rs4290270 may be significantly associated with depression, and that rs11178997 (A/A genotype) may be a significant risk factor for depression in the Chinese subjects. Based on the results of this study, biological experiments should be performed in the future to explore how different SNPs affect depression.

The prevalence of painful physical symptoms in major depressive disorder: A systematic review and meta-analysis of observational studies

BACKGROUND

Painful physical symptoms (PPS) are common in patients with major depressive disorder (MDD), but their prevalence has been mixed. This is a systematic review and meta-analysis of the pooled prevalence of PPS in MDD patients.

METHODS

Systematic literature searches were independently conducted in major databases (PubMed, EMBASE, PsycINFO and Web of Science). Data analyses were conducted using a random-effects model.

RESULTS

A total of 20 studies with 53,852 patients were included. The overall prevalence of PPS in MDD patients was 55.2% (95%CI: 47.9-62.3%), with a point prevalence of 64.2% (95%CI: 53.2-73.8%) and a 12-month prevalence of 57.0% (95%CI: 23.9-84.8%). No significant publication bias was found in this meta-analysis.

CONCLUSION

PPS are common in MDD patients. Considering the negative impact of PPS on daily functioning, effective preventive measures and routine screening should be conducted for MDD patients, and timely treatments should be offered to those in need. Registration number: CRD42020179471.

Association between bullying victimization and depressive symptoms in children: The mediating role of self-esteem

BACKGROUND

Bullying victimization is becoming an increasing problem among children. This longitudinal study examined the relation of bullying victimization (both traditional and cyberbullying victimization) to subsequent depressive symptoms and the possible mediating role of self-esteem among children.

METHODS

A total of 4043 Chinese elementary school children in Grades 3 and 4 comprised the sample. Assessments were conducted every six months on five occasions. Latent growth curve modeling was applied to examine the longitudinal relations among the variables.

RESULTS

Results showed that (a) bullying victimization was positively and significantly associated with subsequent depressive symptoms; (b) self-esteem played an important mediating role in the relation between bullying victimization and depressive symptoms.

LIMITATIONS

The study only considered self-esteem as a mediator. The generalizability of the results should be made cautiously.

CONCLUSIONS

The results highlight the relation between bullying victimization and depressive symptoms among children, suggesting that intervention programs target bullying victimization and self-esteem to reduce the likelihood of depressive symptoms among children.

Longitudinal Associations Between Prosociality and Depressive Symptoms in Chinese Children: The Mediating Role of Peer Preference

Despite empirical findings that prosociality is related to decreased depressive symptoms in children, little is known about the directionality of the relations and the mechanisms that may explain the relations. To address these gaps, this study examined bi-directional associations between prosociality and depressive symptoms and the mediating effects of peer preference on the associations in Chinese children. Multi-wave longitudinal data were collected each year from Grades 3 to 6 in a sample of children in China (initial N = 1012; 51.6% girls; initial M_age = 8.68 years). The results showed that prosociality and depression negatively contributed to each other over time. Prosociality also predicted increased peer preference, which in turn contributed to fewer depressive symptoms, suggesting that peer preference was a mediator of the contributions of prosociality to depressive symptoms. These findings indicate the temporal ordering of prosociality and depressive symptoms and the processes in the development of depressive symptoms in Chinese children.