Alcohol and social connectedness for new residential university students: implications for alcohol harm reduction

Machine learning models for diagnosis and risk prediction in eating disorders, depression, and alcohol use disorder

BACKGROUND

Early diagnosis and treatment of mental illnesses is hampered by the lack of reliable markers. This study used machine learning models to uncover diagnostic and risk prediction markers for eating disorders (EDs), major depressive disorder (MDD), and alcohol use disorder (AUD).

METHODS

Case-control samples (aged 18-25 years), including participants with Anorexia Nervosa (AN), Bulimia Nervosa (BN), MDD, AUD, and matched controls, were used for diagnostic classification. For risk prediction, we used a longitudinal population-based sample (IMAGEN study), assessing adolescents at ages 14, 16 and 19. Regularized logistic regression models incorporated broad data domains spanning psychopathology, personality, cognition, substance use, and environment.

RESULTS

The classification of EDs was highly accurate, even when excluding body mass index from the analysis. The area under the receiver operating characteristic curves (AUC-ROC [95 % CI]) reached 0.92 [0.86-0.97] for AN and 0.91 [0.85-0.96] for BN. The classification accuracies for MDD (0.91 [0.88-0.94]) and AUD (0.80 [0.74-0.85]) were also high. The models demonstrated high transdiagnostic potential, as those trained for EDs were also accurate in classifying AUD and MDD from healthy controls, and vice versa (AUC-ROCs, 0.75-0.93). Shared predictors, such as neuroticism, hopelessness, and symptoms of attention-deficit/hyperactivity disorder, were identified as reliable classifiers. In the longitudinal population sample, the models exhibited moderate performance in predicting the development of future ED symptoms (0.71 [0.67-0.75]), depressive symptoms (0.64 [0.60-0.68]), and harmful drinking (0.67 [0.64-0.70]).

CONCLUSIONS

Our findings demonstrate the potential of combining multi-domain data for precise diagnostic and risk prediction applications in psychiatry.

Cheers to tomorrow? Alcohol use predicts poorer mood and well-being the next day in young adults

Alcohol use is embedded within university culture. While the consequences of alcohol use on next-day physical health are well-known, less is known about the consequences to next-day emotional health. This study investigated the relationship between alcohol use and next-day mood and well-being using two daily diary studies with New Zealand university students. Participants completed a daily diary for 13 days (Study 1, n = 1114; 30.6% men, Mage = 19.6) or 7 days (Study 2, n = 212; 24.5% men, Mage = 19.4) where they reported previous night's alcohol consumption and sleep quality, along with today's mood and well-being. Night-time alcohol consumption was categorised into low-risk (women 1-4 drinks, men 1-5 drinks), medium-risk (women 5-9 drinks, men 6-11 drinks) and high-risk (women 10+ drinks, men 12+ drinks) according to New Zealand public health guidelines. Across both studies, medium- and especially high-risk drinking, but not low-risk drinking, was associated with lower next-day positive mood and well-being compared to nondrinking days. Poorer sleep quality partially accounted for the relationship of drinking with next-day mood and well-being in Study 1, but less so in Study 2. Findings suggest that interventions could promote lower risk drinking behaviours to benefit students' well-being.

Understanding the Effect of External and Internal Assets on Hazardous/Harmful Drinking Among Chinese College Students: A Serial Mediation Model

Hazardous/harmful drinking among college students is increasingly becoming a global health concern. Previous studies have mostly paid more attention to the prevalence and risk factors of alcohol use disorder based on the public health approach, and less is understood about psychological mechanisms and protective factors of problem drinking behavior. Grounded in the framework of developmental assets, this study explored the predictive effect of external assets (i.e., social connectedness) and internal assets (i.e., self-concept clarity and drinking refusal self-efficacy) on hazardous/harmful drinking among Chinese college students. Participants were 598 college students with a mean age of 19.41 (SD = 1.21) years. The results of structural equation modeling showed that social connectedness negatively predicted college students' hazardous/harmful drinking. Moreover, our path analyses revealed a serial mediation among these variables: students with high social connectedness tended to report high self-concept clarity, which in turn increased drinking refusal self-efficacy, and consequently decreased the level of hazardous/harmful drinking. This study revealed the mechanisms underlying how external and internal assets predict risky drinking among college students. These findings made significant contributions to prevention and precision interventions for college-aged youth with drinking problems.

Machine learning models for diagnosis and risk prediction in eating disorders, depression, and alcohol use disorder

This study uses machine learning models to uncover diagnostic and risk prediction markers for eating disorders (EDs), major depressive disorder (MDD), and alcohol use disorder (AUD). Utilizing case-control samples (ages 18-25 years) and a longitudinal population-based sample (n=1,851), the models, incorporating diverse data domains, achieved high accuracy in classifying EDs, MDD, and AUD from healthy controls. The area under the receiver operating characteristic curves (AUC-ROC [95% CI]) reached 0.92 [0.86-0.97] for AN and 0.91 [0.85-0.96] for BN, without relying on body mass index as a predictor. The classification accuracies for MDD (0.91 [0.88-0.94]) and AUD (0.80 [0.74-0.85]) were also high. Each data domain emerged as accurate classifiers individually, with personality distinguishing AN, BN, and their controls with AUC-ROCs ranging from 0.77 to 0.89. The models demonstrated high transdiagnostic potential, as those trained for EDs were also accurate in classifying AUD and MDD from healthy controls, and vice versa (AUC-ROCs, 0.75-0.93). Shared predictors, such as neuroticism, hopelessness, and symptoms of attention-deficit/hyperactivity disorder, were identified as reliable classifiers. For risk prediction in the longitudinal population sample, the models exhibited moderate performance (AUC-ROCs, 0.64-0.71), highlighting the potential of combining multi-domain data for precise diagnostic and risk prediction applications in psychiatry.

Using peer-ethnography to explore the health and well-being of college students affected by COVID-19

PURPOSE

COVID-19 continues to infect and affect college-aged youth. We lack information about how students experienced the pandemic day-to-day and what they need for recovery, from their own perspectives. This study employed peer ethnography to explore student's insights for current and future prevention and care.

METHODS

A team of eight students were trained as peer ethnographers to observe and record conversations with their peers in 15-minute increments during the COVID-19 pandemic. Transcripts of 200 conversations were collated and analysed via theme analysis to identify patterns.

RESULTS

Student conversations revealed dichotomous perspectives about COVID-19. Some students prioritized safety, captured via three themes-caution, rethinking routines, and protecting others. Other students struggled to follow prevention guidelines and took risks, also captured by three themes-parties, denial, and misinformation. A third category of themes captured the results of this dichotomy-tense campus relationships and a health leadership vacuum.

CONCLUSIONS

Our findings identify specific locations for intervention (e.g., off campus parties) and needed community collaborations (e.g., bars and universities) for COVID-19 and future pandemics. Our findings suggest that overarching approaches, like harm reduction or affirmation (versus shame), are helpful intervention frameworks. Findings also celebrate the value of peer-ethnography, to learn about pandemics and solutions from the ground up.

The socio-ecological context of U.S. college student drinking: A latent class analysis

BACKGROUND

U.S. college student drinking typologies often consider quantity and frequency but not the socio-environmental contexts in which students obtain alcohol and drink. Understanding context could be important for preventive interventions.

METHODS

We used latent class analysis (LCA), a person-centered approach to understanding behavior patterns, to identify drinking typologies among 1390 college student drinkers from a representative survey at two interconnected private colleges in the Northeast. Classes were derived from drinking frequency and quantity as well as how students obtain alcohol, where they drink, and their perceptions of peer drinking. Resulting classes were correlated with demographic and developmental characteristics, participation in campus activities and connectedness, and alcohol consequences and protective behaviors.

RESULTS

Four distinct drinking profiles emerged. 'Tasters' (n = 290) included infrequent and low quantity drinkers who drank in dorms with alcohol provided by others. 'Bargoers' (n = 271) included low quantity and moderate frequency drinkers who purchased their own alcohol and drank at bars. 'Partiers' (n = 483) included moderate frequency and quantity drinkers who obtained alcohol from several sources and drank in many locations. 'Bingers' (n = 345) included high frequency and quantity drinkers and binge drinkers, who drank in many locations with alcohol obtained from multiple sources. Classes differed in demographics, age of first drink, campus activities and connectedness, alcohol protective behaviors, and alcohol problems.

CONCLUSION

Heterogeneous patterns of drinking based on quantity, frequency and social/environmental context emerged and suggested the need for different tailored interventions.

'When I came to university, that's when the real shift came': alcohol and belonging in English higher education

While young people's alcohol consumption has fallen sharply in the United Kingdom and other high-income countries, universities remain places where heavy drinking is routine and normative. Drawing on interviews with undergraduate students, this article explores how heavy drinking is part of how students negotiate a sense of belonging and form personal relationships. Theoretical work on belonging and relationality is used to make sense of students' encounters with alcohol. Consistent with the decline in youth drinking, several interviewees had limited experience of heavy drinking prior to university, and some were not interested in taking it up. After describing how heavy drinking facilitates belonging in certain spaces of student life, we examine the strategies of non- and low-drinking students in navigating these spaces. Attending to their strategies suggests that becoming known as 'social persons' is key to negotiating belonging without drinking heavily. We conclude by considering how universities might better accommodate the desire for belonging for the increasingly large proportion of students with limited experience of or desire for alcohol by creating opportunities for students to form personal relationships in ways that do not involve alcohol or where alcohol is peripheral to the activity.

Student perceptions of the current drinking culture in three Australian residential colleges: Drinking motives, consequences and recommendations for harm minimisation strategies

INTRODUCTION

Systemic cultural factors related to excessive alcohol consumption have been identified in Australian university residential colleges. In this mixed methods study, we conducted focus groups with student leaders at three Australian residential colleges. We aimed to explore students' perceptions of alcohol use and related consequences in their current college environment and gather feedback from students on the utility of alcohol harm minimisation strategies in this context.

METHODS

In November 2020, 77 student leaders from three colleges participated in focus groups. Each focus group ran for 1.5-2 hours and included three sections: (i) quantitative survey; (ii) semi-structured group interview; and (iii) feedback on a potential alcohol harm minimisation workshop.

RESULTS

The survey revealed that 81% of participants reported drinking hazardously. Thematic analysis of the interview data indicated many students perceived college as a supportive environment regarding students' alcohol use choices (direct peer pressure to drink was uncommon). However, indirect social influence to drink appeared to maintain a 'culture of intoxication'. Specifically, social norms to attend college events (where drinking is implied) and modelling of excessive drinking were key indirect influences on heavy drinking norms. Students were aware and accepting of many alcohol harm minimisation strategies and interested in improving current strategies.

DISCUSSION AND CONCLUSIONS

Despite the supportive college environment described by students, regarding alcohol use choices, a 'culture of intoxication' driven by indirect social influences was evident. Student leaders' interest in increasing the availability of harm minimisation strategies highlights the potential utility of peer-led alcohol interventions in colleges.

"It Breaks the Ice": A Qualitative Examination of Drinking Game Motives, Harms and Protective Behavioral Strategies among University Students in Australia

Background: Most research on drinking games (DG) behaviors and cognitions has been conducted among university students from the United States. Understanding why DGs are played, consequences and protective behavioral strategies (PBS) to reduce negative consequences is needed among Australian students. Objectives: In Australia, five focus groups (n=3-8) were held with 27 university students (63% female) aged 18-24 years who had played a DG in the past month. The study aimed to identify motives for playing DGs, consequences and adoption of PBS. Results: Four themes were identified: (1) social lubrication and conformity: playing to fit in; (2) community and camaraderie (perceived social benefits of DGs); (3) a means to an end (where getting drunk/predrinking was the goal and avoidance of PBS was prevalent); and (4) it is not a levelled playing field, which highlights that the risks are not equal for everyone. Conclusions: The interplay between DG motives, PBS and associated harms was identified. Expanding measurement of pre-existing DG motives and PBS is recommended, as well as the potential of DG motives to inform proposed interventions.

College students' virtual and in-person drinking contexts during the COVID-19 pandemic

BACKGROUND

The COVID-19 pandemic has resulted in pronounced changes for college students, including shifts in living situations and engagement in virtual environments. Although college drinking decreased at the onset of the pandemic, a nuanced understanding of pandemic-related changes in drinking contexts and the risks conferred by each context on alcohol use and related consequences have yet to be assessed.

METHODS

Secondary data analyses were conducted on screening data from a large parent clinical trial assessing a college student drinking intervention (N = 1669). Participants across six cohorts (from Spring 2020 to Summer 2021) reported on the frequency of drinking in each context (i.e., outside the home, home alone, home with others in-person, and home with others virtually), typical amount of drinking, and seven alcohol-related consequence subscales.

RESULTS

Descriptive statistics and negative binomial regressions indicated that the proportion and frequency of drinking at home virtually with others decreased, while drinking outside the home increased from Spring 2020 to Summer 2021. Limited differences were observed in the proportion or frequency of individuals drinking at home alone or at home with others in-person. Negative binomial and logistic regressions indicated that the frequency of drinking outside the home was most consistently associated with more alcohol-related consequences (i.e., six of the seven subscales). However, drinking at home was not without risks; drinking home alone was associated with abuse/dependence, personal, social, hangover, and social media consequences; drinking home with others virtually was associated with abuse/dependence and social consequences; drinking home with others in-person was associated with drunk texting/dialing.

CONCLUSION

The proportion and frequency of drinking in certain contexts changed during the COVID-19 pandemic, although drinking outside the home represented the highest risk drinking context across the pandemic. Future prevention and intervention efforts may benefit from considering approaches specific to different drinking contexts.

Loneliness and Alcohol-Related Problems among College Students Who Report Binge Drinking Behavior: The Moderating Role of Food and Alcohol Disturbance

Loneliness and alcohol misuse are common among college students and pose a threat to public health. To better understand the longitudinal association between these public health concerns we examined food and alcohol disturbance (FAD; i.e., restricting one's caloric intake prior to drinking) as a moderator in the association between loneliness and alcohol-related problems. Participants were 456 college students from a mid-sized university who engaged in past 30-day binge drinking. The majority of participants identified as being White (67.1%), female (78.1%), and reported a mean age of 19.61 (SD = 1.54) years. Participants completed two surveys (3 weeks apart) over the course of an academic semester. Analyses revealed a significant interaction between loneliness and FAD, such that loneliness (T1) significantly and positively predicted alcohol-related problems (T2), but only among individuals who engaged in relatively higher levels of FAD (T1). FAD may be an appropriate target for interventions aimed at reducing alcohol-related problems among college students experiencing loneliness.

"Drunk People Are on a Different Level": A Qualitative Study of Reflections From Students About Transitioning and Adapting to United Kingdom University as a Person Who Drinks Little or No Alcohol

BACKGROUND

Though sobriety in young people is on the rise, students who drink little or no alcohol may experience social exclusion at University, impacting well-being. We aim to understand the social experiences of United Kingdom (UK) undergraduate students who drink little or no alcohol.

METHODS

A mixed-methods study using semi-structured, one-to-one interviews and the 24-Item Social Provisions Scale and Flourishing Scale with 15 undergraduate students who drink little or no alcohol. Descriptive statistics are presented for quantitative data and thematic analysis for qualitative.

RESULTS

Eight main themes and four subthemes were generated from thematic analysis summarised in two sections 'views of drinkers from non-drinkers' and 'how peer pressure feels and how people deal with it.' The initial transition to University represented a challenge, where participants struggled to find their 'true' friends. However, students generally had high levels of social provision, well-being and enjoyed close friendships with fewer casual acquaintances. All students experienced some kind of peer pressure (of a varying extremity) and developed coping strategies when in social situations involving alcohol. Fear of missing out on the 'typical' University experience heightened self-imposed expectations to drink. Despite participants acknowledging their counter-normative behaviour, some felt they were subject to stigmatisation by drinkers, doubting their non-drinker status, causing feelings of exclusion or being 'boring.' Their desire to 'be like everyone else' exposed some insight into the negative stereotypes of sobriety, including frustration behind alcohol's status elevation.

CONCLUSION

Students adopt strategies to minimise peer pressure and to fit in. Future research should interrogate drinkers' perceptions of their sober peers to deepen understanding, better break down 'us and them,' and mitigate future expectations within the University drinking culture.

Stay Home, Drink at Home? A Daily Diary Study on College Students' Alcohol and Social Media Use during the COVID-19 Pandemic

BACKGROUND

COVID-19 and measures to contain it may have impacted college students' behavior, including their drinking behavior. Students' drinking may have decreased-for example, due to the closure of bars-but problematic drinking may have increased-for example, due to (solitary) drinking at home. Another behavior that has increased due to COVID-19 and the accompanying social isolation is students' social networking site (SNS) use. This is worrisome because students' SNS use has been shown to increase their alcohol use. Nevertheless, little research has investigated these behaviors and the possible link between them during a lockdown. Therefore, this study aimed to examine (1) whether students engaged in drinking during a lockdown, (2) whether they displayed their drinking behavior on SNSs, and (3) whether exposure to and posting of alcohol-related content was linked to their daily alcohol use.

METHODS

337 college students (M_age = 20.63 years, SD_age = 1.55 years; 50.3% male) participated in a two-week daily diary study. Descriptive statistical analyses and generalized linear mixed modeling (GLMM) were deployed.

RESULTS

Descriptive analysis results showed that during the week, students' drinking occurred with friends in dormitories, while in the weekend, this behavior shifted to drinking with friends and parents at home. Moreover, students mostly saw visual and posted textual posts of this drinking on SNSs. Furthermore, GLMM revealed associations between exposure to alcohol postings, sharing of alcohol postings, and students' probability of drinking on the same day.

CONCLUSION

This study provides important insights into students' alcohol use and its underlying mechanisms during health crises.

The good, the bad, and the environment: developing an area-based measure of access to health-promoting and health-constraining environments in New Zealand

Background

Accounting for the co-occurrence of multiple environmental influences is a more accurate reflection of population exposure than considering isolated influences, aiding in understanding the complex interactions between environments, behaviour and health. This study examines how environmental ‘goods’ such as green spaces and environmental ‘bads’ such as alcohol outlets co-occur to develop a nationwide area-level healthy location index (HLI) for New Zealand.

Methods

Nationwide data were collected, processed, and geocoded on a comprehensive range of environmental exposures. Health-constraining ‘bads’ were represented by: (i) fast-food outlets, (ii) takeaway outlets, (iii) dairy outlets and convenience stores, (iv) alcohol outlets, (v) and gaming venues. Health-promoting ‘goods’ were represented by: (i) green spaces, (ii) blue spaces, (iii) physical activity facilities, (iv) fruit and vegetable outlets, and (v) supermarkets. The HLI was developed based on ranked access to environmental domains. The HLI was then used to investigate socio-spatial patterning by area-level deprivation and rural/urban classification.

Results

Results showed environmental ‘goods’ and ‘bads’ co-occurred together and were patterned by area-level deprivation. The novel HLI shows that the most deprived areas of New Zealand often have the most environmental ‘bads’ and less access to environmental ‘goods’.

Conclusions

The index, that is now publicly available, is able to capture both inter-regional and local variations in accessibility to health-promoting and health-constraining environments and their combination. Results in this study further reinforce the need to embrace the multidimensional nature of neighbourhood and place not only when designing health-promoting places, but also when studying the effect of existing built environments on population health.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12942-021-00269-x.

Is Alcohol Consumption Related to Lifestyle Factors in Romanian University Students?

Poor eating habits and substance abuse are major public health concerns among young adults transitioning into university life. This study's objective was to assess Romanian students' alcohol consumption and correlate it with other lifestyle factors. We performed a cross-sectional study of 1212 students with a mean age of 21.1 ± 2.4 years. We applied a valid online questionnaire to evaluate and statistically analyze the interrelation between alcohol consumption and lifestyle factors by multivariate statistical analysis. The prevalence of alcohol consumption among the student population enrolled in the study was 79.9%. Multiple regression showed that alcohol consumption was positively associated with gender (p < 0.001), level of physical activity (p = 0.009), number of cigarettes (p < 0.001), and fast-food consumption (p < 0.001), and negatively associated with sleep (p = 0.012) and study hours (p < 0.001). The study revealed a high prevalence (18%) of binge drinking among males. The frequent use of illicit drugs is associated with alcohol consumption (p < 0.001) but present at low levels (1.6%). The study evidenced a high prevalence of alcohol consumption in students, especially in males, and poor food behavior related to the intake of vegetables and fruits. Health promotion campaigns regarding the harmful effects of alcohol, smoking, poor nutrition, and ongoing illicit drug prevention campaigns are needed to improve students' performances.

Close proximity to alcohol outlets is associated with increased crime and hazardous drinking: Pooled nationally representative data from New Zealand

This nationwide study investigated the relationship between proximity to alcohol outlets (off-licence, on-licence, and other-licence) and two adverse outcomes; hazardous drinking and crime (common assault, non-aggravated sexual assault, aggravated sexual assault, and tobacco and liquor offences). After adjustment for important individual- and area-level factors, close proximity to alcohol outlets was associated with increased risk of hazardous drinking, with strong associations for on-licence outlets. Proximity alcohol outlets was also strongly associated with all crime outcomes, often with a dose-response relationship. Nationally representative New Zealand data showed that close proximity to alcohol outlets was associated with increased crime and hazardous drinking.