Nonsuicidal self-injury in Asian versus Caucasian university students: who, how, and why?

A systematic review of studies on the association between physiological parameters and self-harm

BACKGROUND

Self-harm is common in people with intellectual disabilities and is associated with multiple adverse consequences for the client engaging in self-harm, other clients and caregivers. Self-harm is related to emotional dysregulation according to both observational and self-report data. Measures of the autonomic nervous system might provide additional insight in this relationship.

METHODS

The current systematic review systematically summarized a broad spectrum of studies on the association between self-harm and physiological parameters. The search identified 2400 articles, 46 were included.

RESULTS

In most studies, which compared electrodermal activity and heart rate in people with and without self-harm, no clear indications for a relation between physiology and self-harm was found. Studies on heart rate variability showed indications for lower heart rate variability during recovery, which could imply emotion dysregulation, findings which were supported by results from imagery studies (heart rate and skin conductance). No consistent findings were found when self-harm was studied before, during or after actual occurrences of self-harm, although this was examined by very few studies.

CONCLUSIONS

Although wearable technology has improved, the majority of studies to date are lab-studies. Future research should focus on measuring physiology in daily life before, during and after self-harm, in people with intellectual disabilities, study different types and functions of self-harm separately, and test multimodal prediction models. This knowledge could improve the understanding, prevention and assessment of this debilitating behaviour.

Functions of nonsuicidal self-injury and repeated nonsuicidal self-injury among adolescents: A moderating role of addictive features

OBJECTIVE

The high prevalence and addictive features of nonsuicidal self-injury (NSSI) in adolescents have been documented, but the role of addictive features in the process from NSSI functions to behaviour remains unclear. The major aim of this study was to investigate the effect of addictive features on NSSI functions and the severity of repeated NSSI.

METHODS

A total of 10,781 students from primary and middle schools in Chengdu and Karamay were invited to participate in the online cross-sectional survey, and 10,501 completed the survey. Two self-report questionnaires, the Ottawa Self-Injury Inventory (OSI) and the Adolescent Self-Harm Scale (ASHS), were used to collect data from all participants.

RESULTS

Among the students, 23.45% and 6.64% reported having engaged in NSSI at least once or at least five times in the past year. Being a girl, being an only child, and being in a single-parent family were significantly associated with more severe NSSI. Addictive features have high value for predicting repeated NSSI. In addition to their significant independent/direct additive effects, addictive features mediated and moderated the relationship between NSSI functions and increased severity of NSSI in adolescents.

DISCUSSION AND CONCLUSIONS

The findings suggest that addictive features play a critical role in the development of repeated NSSI in adolescents, which indicates that addiction models may partially explain the mechanism underlying increased severity of NSSI. This may enhance understanding of the reasons for repeated NSSI and inform interventions for repeated NSSI among adolescents.

The pooled prevalence and influential factors of non-suicidal self-injury in non-clinical samples during the COVID-19 outbreak: A meta-analysis

BACKGROUND

COVID-19 has had an enormous impact on the mental health of people around the world, particularly adolescents. Non-suicidal self-injury (NSSI) is one of the most prominent and dangerous behaviors associated with suicide. However, few meta-analyses of the NSSI prevalence have ever been conducted since the COVID-19 outbreak. Here, we conducted a meta-analysis to estimate the pooled prevalence and elucidate the influencing factors for NSSI.

METHODS

We searched PubMed, Web of Science, Embase, APA PsycINFO, CNKI and Wanfang Database for relevant literature published before April 2022. Pooled prevalence and 95 % confidence interval (CI) were used to assess NSSI prevalence. Subgroup and meta-regression analyses were performed to clarify the potential influencing factors.

RESULTS

A total of 15 studies with 24,055 participants were eventually included. The results showed that the pooled overall prevalence of NSSI among overall samples during the COVID-19 pandemic was 22.5 % (95 % CI: 17.2 % to 28.9 %). Subgroup and meta-regression analyses revealed that the crucial influencing factors for NSSI included gender, age, regional distribution, and suicidal ideation. Specifically, the NSSI prevalence among adolescents and adults during the pandemic was 32.40 % and 15.70 %, respectively. Most importantly, gender is a significant influencing factor for NSSI among adolescents.

CONCLUSIONS

The pooled prevalence of NSSI during the COVID-19 outbreak has surged to alarming heights, especially among adolescents. The prevalence of NSSI may be influenced by complex factors such as gender and age. Therefore, it is critical to pay attention to NSSI behaviors in the adolescent population, particularly male adolescents who appear to be susceptible.

Associations between non-suicidal self-injury and experiential avoidance: A systematic review and Robust Bayesian Meta-analysis

OBJECTIVES

Non-suicidal self-injury (NSSI) is the intentional and deliberate damage to an individual's own body tissue without the intent to suicide. Individuals who have higher self-reported levels of experiential avoidance are more likely to report a history of NSSI. The current study systematically reviewed the literature and meta-analysed studies assessing associations between experiential avoidance and self-injury.

METHOD

An extensive review was conducted of several databases (including ProQuest, Joanna Briggs, Web of Science, PsychArticles, PubMed, Scopus, and Ovid). Nineteen articles (two dissertations) met the inclusion criteria for the systematic review and 14 were analysed in a Robust Bayesian Meta-analysis. This review was registered through PROSPERO (CRD42020198041).

RESULTS

There was a small to medium, pooled effect size (d = 0.48, 95 % Credibility Interval 0.00-0.85). There was strong evidence for this effect size (Bayes Factor = 12.16), although there was considerable heterogeneity between studies (τ =0.68, 95 % CI [0.44, 0.1.05]). The analysis testing whether these findings may be due to publication bias was inconclusive (Bayes Factor = 2.45).

LIMITATIONS

The majority of studies included were cross-sectional, in English, and most studies were of university students. While some studies reported on recency/frequency of NSSI there was not enough data to conduct meta-analysis.

CONCLUSION

These results suggest there is a robust association between history of NSSI and experiential avoidance. However, as most studies operationalise avoidance as a unidimensional construct, it is not clear which aspects of avoidance differentiate individuals with and without a history of NSSI.

Risky or protective? Online social support's impact on NSSI amongst Chinese youth experiencing stressful life events

BACKGROUND

This study was designed to investigate potential gender differences in the interrelations between different types of stressful life events and non-suicidal self injury (NSSI) among Chinese youth, as well as to test the direct and moderating impacts of online social support on Chinese students' NSSI engagement under the pressure of different types of stressful life events.

METHODS

Based on the data of 2200 students from middle - highschools and universities in Northwestern China, gender difference (male/female binary) in stressful life events, online social support, NSSI and their correlations were analyzed in the study.

RESULTS

Among different types of stressful life events, male students were reported to experience a significantly higher impact of punishment and interpersonal relationship than females. Female students only experienced significantly higher learning pressure than males; Gender difference was not indentified in NSSI among youth; Stressful life events related to punishment could significantly predict NSSI engagement among males. Stressful life events related to learning pressures, interpersonal relationships, and adaption were significantly correlated to NSSI engagement among females; Online social support didn't had a significant direct effect on youth's NSSI, although it did significantly moderate the relationship between specific types of stressful life events (i.e., loss, interpersonal relationships, adaption among males and all types among females) and their NSSI.

CONCLUSION

The present study has provided evidence of specified types of stressful life events being risk factors in affecting youth's NSSI: For male students, the higher impacts of stressful life events related to punishment they experienced, the more likely they were about to engage in NSSI. For female students, stressful life events related to learning pressure, interpersonal relationships and adaption were all proved as significant predictors and risky factors of female youth's NSSI; Online social support did not impact on individual's NSSI engagement directly, but moderated it significantly as a protective factor.

Experiential avoidance in non-suicidal self-injury and suicide experiences: A systematic review and meta-analysis

INTRODUCTION

This systematic review and meta-analysis aimed to (i) examine the associations between experiential avoidance (EA), non-suicidal self-injury (NSSI), and suicide experiences, and (ii) identify sample- and methodological-related variables affecting the strength of these associations.

METHOD

Medline, Embase, PsychINFO, Web of Science, and CINAHL were searched until April 2020. Random-effect meta-analyses were applied. The I² statistic and the Egger's test assessed heterogeneity and publication bias. Meta-regression analyses were used to evaluate the impact of moderator variables on the strength of these associations.

RESULTS

Data from 19 independent studies based on n = 9900 participants were pooled. The analyses demonstrated a weak but significant association between EA and NSSI. None of the examined moderator variables influenced the strength of this relationship. There was an indication of publication bias, suggesting that this association may have been inflated. The associations between EA, and suicide ideation and behaviors were moderate to strong.

DISCUSSION

The current study concluded that (i) the EA model for NSSI should be revised by incorporating new evidence implicating feelings of relief in NSSI, and (ii) future studies should examine interactive factors between EA and key psychological components in the pathways to suicide experiences because these findings have direct clinical implications.

Understanding predictors of change in a day treatment setting for non-suicidal self-injury

OBJECTIVES

To examine change in non-suicidal self-injury (NSSI) frequency, quality of life, and functional impairment from admission to discharge in patients enrolled in partial hospitalization and intensive outpatient programmes (PHP/IOP) designed to treat NSSI. Demographic, clinical, and treatment-related predictors of changes were also examined.

DESIGN

Data were collected as part of routine clinical assessment procedures at admission and discharge from patients enrolled in a PHP/IOP programme designed to treat NSSI. The clinical assessment included measures examining quality of life, functional impairment, and NSSI behaviour.

METHODS

Paired t-tests were used to examine change in NSSI frequency, quality of life, and functional impairment. Reliable clinical change analyses were used to identify clinically significant change in quality of life and functional impairment. Multilevel mixed-effects regression was used to examine predictors of change for quality of life and functional impairment. Negative binomial regression was used to examine predictors of change for NSSI frequency.

RESULTS

From admission to discharge, NSSI frequency significantly decreased and quality of life and functional impairment evidenced clinically significant change. Age, race/ethnicity, and insurance type predicted change in functional impairment, while gender predicted change in quality of life. Urge to self-injure predicted change in NSSI frequency. Borderline symptoms predicted change across all outcome variables.

CONCLUSIONS

Patients who completed a day treatment programme for NSSI evidenced significant change in NSSI frequency, functional impairment, and quality of life at discharge; however, several demographic and clinical variables were associated with change.

PRACTITIONER POINTS

Patients who engage in NSSI show significant change from admission to discharge in a day treatment programme dedicated to the treatment of NSSI. Quality of life and functional impairment are important outcome variables to consider and evaluate in higher levels of care. It is important to consider demographic and clinical variables when creating a treatment plan for NSSI. Although BPD symptoms may be important to consider in day treatment for NSSI, interpersonal dysfunction, depressive symptoms, and mood lability may also affect change in symptoms.

Influential Factors of Non-suicidal Self-Injury in an Eastern Cultural Context: A Qualitative Study From the Perspective of School Mental Health Professionals

Background: Adolescent non-suicidal self-injury (NSSI) is becoming a serious public health concern worldwide. In recent years, there has seen a significant increase in both the growth rate and cases of NSSI in Eastern countries, such as Japan, India, and China. In China, most schools have a mental health office that comprises mental health professionals (MHPs), who are the first to respond to student mental health problems, which include NSSI. MHPs possess comprehensive knowledge as well as unique insight into adolescent NSSI. However, very few studies on NSSI have incorporated their perspectives. In this work, we seek to add novel insight by conducting a study focusing on adolescent NSSI from the perspective of MHPs. Methods: We recruited a total of 24 MHPs from different schools using purposive sampling and conducted a semi-structured interview on NSSI-related issues. Each interview was voice recorded and lasted ~30 min. A thematic analysis was performed for the responses to study the most common and concerning issues underlying NSSI. Results: We extracted three major themes and eight sub-themes from the interview records, which included (1) the impact of Chinese culture on NSSI (sex-bias discrimination, overly high expectations, and inappropriate parenting style); (2) life events in school (internet use, academic pressure, and romantic relationships); and (3) opinions on the status quo of NSSI in China (ignorance and stigma). Conclusion: Results showed that culturally sensitive influential factors, such as sex-bias discrimination, the imposing of unrealistic expectations for personal achievement, and inappropriate parenting style, should be given more attention to prevent, assess, and intervene in NSSI. Emerging factors of modern society and adolescent lifestyles, such as academic pressure, internet use, and romantic relationships, should also be considered for treatments.

Non-Suicidal Self-Injury Among Italian Adolescents: The Role of Parental Rejection, Self-Concept, Anger Expression, and Body Investment

Objective

Parental rejection, poor self-concept, anger expression, and negative body investment have often been associated with non-suicidal self-injury (NSSI). However, research has investigated each factor separately. To address this shortcoming, the main aim of the study was to integrate these factors and test a hierarchical regression to examine the impact of each factor above and beyond the others.

Method

A cross-sectional sample of 481 Italian high school students aged 13-19 (M_age=15.48; SD=1.46) were screened by self-report measures that assess parental rejection, self-concept, anger expression, body emotional investment, and NSSI. A semi-structured interview was administered in order to assess the characteristics of self-injurious behaviors.

Results

After the interview, twenty-three (4.8%) students reported having engaged in NSSI (Mage =12.63; SD=1.58). Neither gender nor age differences were found. The hierarchical regression revealed the NSSI was associated with the inward expression of anger (ORs=1.1–1.7) and the negative body investment (ORs=.037–.281).

Conclusions

These findings point out that the expression of anger inwardly and the emotional investment in the body may be salient factors to consider in understanding the occurrence of NSSI among adolescents. The clinical relevance of these findings was discussed.

Self-harm, Emotion Regulation, and Experiential Avoidance: A Systematic Review

This study aimed to systemically review the literature regarding self-harm, emotion regulation, and experiential avoidance. Articles were identified through systematic searches of several databases using combinations of the phrases "emotion regulation" AND "experiential avoidance" AND "self-harm," or "self-injury," and "BPD" or "Borderline Personality Disorder." Additional searches were conducted inclusive of terms related to experiential avoidance and emotion regulation, as well as other disorders related to self-harm. 17 articles were identified and reviewed. Results tentatively support the role of experiential avoidance in self-harm; some studies described phenomena similar to experiential avoidance without using the term. Poor emotion regulation was often cited as a reason for engagement in self-harm. Several gaps in the literature were identified and discussed.

A longitudinal study investigating bidirectionality among nonsuicidal self-injury, self-criticism, and parental criticism

Previous research has indicated that both self-criticism and parental criticism may be associated with engagement in nonsuicidal self-injury (NSSI). However, much less is known about the temporal sequencing of these relationships (i.e., do self-criticism and parental criticism predict NSSI across time, or does NSSI predict self-criticism and parental criticism across time?). Undergraduate students (N = 1132; 70.5% female; M_age= 19.06) from a midsized Canadian university completed measures of NSSI, self-criticism, maternal criticism, and paternal criticism at two time points (one year apart). An autoregressive cross-lagged path analysis revealed that there was a significant unidirectional relationship between NSSI and self-criticism, such that greater NSSI frequency predicted greater self-criticism across time, but self-criticism did not predict greater NSSI frequency across time. In addition, both maternal and paternal criticism were not significantly associated with NSSI frequency when examining either direction of effects. Overall, our results challenge the notion that self-criticism is a risk factor for NSSI engagement, and instead, suggest that it may be a consequence of NSSI engagement. Intervention programs may benefit from recognizing that individuals who engage in NSSI may subsequently criticize themselves.

Prevalence of and risk factors for non-suicidal self-injury in rural China: Results from a nationwide survey in China

BACKGROUND

Non-suicidal self-injury (NSSI) is a highly prevalent and serious public health problem among adolescents worldwide. However, to date there were no studies assessing the prevalence of NSSI defined by suggested DSM-5 criteria among Chinese adolescents. We aimed to conduct a nationwide survey to explore the prevalence of and risk factors for NSSI among school-based adolescents in rural China.

METHODS

A total sample of 15,623 adolescents in rural China were enrolled by using a multistage sampling method. Data was collected by self-report questionnaires including demographic characteristics, neglect, maltreatment, loneliness, resilience, social support and emotional management ability. NSSI was defined by suggested DSM-5 criteria, according to which the engagement in self-injury took place more than 5 times a year. Multinomial logistic regression models were used to estimate the association between risk factors and NSSI.

RESULTS

There were 12.2% of adolescents (n = 1908) met the suggested DSM-5 criteria. Approximately 29% reported a history of NSSI at least once during the last year. Significant differences were found in several demographic factors including gender, ethnicity, grade, and family structure between adolescents with and without experiencing NSSI. The top three NSSI behaviors among adolescents with NSSI experience were hitting self, pinching, and pulling hair, with a prevalence rate of 16.7%, 14.1% and 11.2%, respectively. Female, Han ethnicity, fathers' education level, neglect, maltreatment, loneliness, social support, suicidal behaviors and emotional management ability were significantly associated with NSSI by multivariate analysis. No significant relationship was found between resilience and risk of NSSI.

LIMITATION

The DSM-5 has proposed 6 groups of criteria for NSSI, we only used criteria on frequency given its more accepted feasibility and pragmatic application. Consequently, it may different from other prevalence that estimated by other criteria.

CONCLUSION

To the best of our knowledge, this is the first study reporting prevalence of NSSI defined by suggested DSM-5 criteria among adolescent in rural China. In comparison to finding from the similar samples of adolescents, Chinese rural adolescents seem to have a relative higher prevalence. The potential risk factors for NSSI include female, father's education, Han ethnicity, psychosocial factors and suicide behaviors. More evidence for further understanding of context of the occurrence, improving access to health care utilization, and identifying the role of psychosocial factors and family relationship, is needed for the prevention and management of NSSI.

The role of emotional clarity and distress tolerance in deliberate self-harm in a sample of trauma-exposed inpatient adolescents at risk for suicide

OBJECTIVE

The purpose of this study was to examine distress tolerance as a moderator of the relationship between emotional clarity and deliberate self-harm (DSH) in a diverse sample of trauma-exposed adolescents in acute psychiatric care at high risk of suicidal behavior. It was hypothesized that distress tolerance would emerge as a significant moderator, such that the association between emotional clarity and DSH would be significant among youth with high, but not low, distress tolerance.

METHOD

Participants (N=50; 52.0% female; M=15.1years, SD=0.51; 44% White) completed measures of emotion dysregulation, DSH, history of suicide attempts, as well as a behavioral measure of distress tolerance.

RESULTS

Controlling for history of suicide attempts, results revealed a significant interaction between distress tolerance and emotional clarity in relation to DSH. Specifically, emotional clarity difficulties were related to DSH at high, but not low, levels of distress tolerance.

CONCLUSIONS

Findings suggest that DSH among trauma-exposed youth with high rates of past suicide attempts is most likely when low emotion clarity is coupled with a high tolerance for emotional distress. Given that DSH significantly increases risk for suicide among youth with psychiatric needs, assessment of emotional clarity and distress tolerance deficits is apt to be warranted to facilitate identification of these youth for targeted intervention.

Affective instability and impulsivity predict nonsuicidal self-injury in the general population: a longitudinal analysis

BACKGROUND

Impulsivity and affective instability are related traits known to be associated with nonsuicidal self-injury, although few longitudinal studies have examined this relationship. The purpose of this study was to determine if impulsivity and affective instability predict future nonsuicidal self-injury in the general population while accounting for the overlap between these traits.

METHODS

Logistic regression analyses were conducted on data from 2344 participants who completed an 18-month follow-up of the 2000 British National Psychiatric Morbidity Survey. Affective instability and impulsivity were assessed at baseline with the Structured Clinical Interview for DSM-IV Axis II Personality Disorders. Nonsuicidal self-injury was assessed at baseline and follow-up during semi-structured interviews.

RESULTS

Affective instability and impulsivity predicted the onset of nonsuicidal self-injury during the follow-up period. Affective instability, but not impulsivity, predicted the continuation of nonsuicidal self-injury during the follow-up period. Affective instability accounted for part of the relationship between impulsivity and nonsuicidal self-injury.

CONCLUSIONS

Affective instability and impulsivity are important predictors of nonsuicidal self-injury in the general population. It may be more useful to target affective instability over impulsivity for the treatment of nonsuicidal self-injury.