Personalized boosters for a computerized intervention targeting college drinking: The influence of protective behavioral strategies

Effectiveness of web-based personalised feedback interventions for reducing alcohol consumption among university students: A systematic review and meta-analysis

ISSUES

Meta-analysis was conducted to examine standalone web-based personalised feedback interventions (PFI) delivered in non-structured settings for reducing university students' alcohol consumption. Subgroup analyses by gender-focus, type-of-content and accessibility were conducted. Characteristics of the sample, the intervention and study quality were examined as moderators.

APPROACH

Ten databases were searched from 2000 to 2023. Eligible articles involved only randomised controlled trials. Random-effects meta-analysis was conducted to calculate the effect size on weekly alcohol consumption comparing web-PFIs and non-active controls. Meta-regressions were applied to explore effect moderators.

KEY FINDINGS

Thirty-one studies were included in the narrative synthesis, 25 of which were meta-analysed. Results found significant effect size differences on weekly alcohol consumption in favour of the intervention group in the short- (SMD = 0.11, 95% confidence interval [CI] 0.06, 0.15) and long-term period (SMD = 0.09, 95% CI 0.02, 0.15). Subgroup analyses identified that interventions which were gender-specific, multicomponent and had unlimited access had higher and significant effect sizes, although they were very similar with respect to comparative groups. Moderator analyses showed that times feedback was accessed significantly contributed to the effectiveness of the intervention. Effects diminished over time, although they remained significant.

IMPLICATIONS

The meta-analysis evidences the effectiveness of web-PFI for addressing university students' alcohol use, decreasing by 1.65 and 1.54 drinks consumed per week in the short- and long-term, respectively.

CONCLUSIONS

The results offer empirical evidence that supports the significant, although small, effect of web-PFI delivered remotely in universities. Future research should focus on increasing their impact by introducing booster sessions and content components based on students' preferences.

Booster effects and mechanisms of web-based personalised normative feedback alcohol intervention for college students: A pragmatic randomised controlled trial

BACKGROUND

To evaluate the effects of booster and no booster versions of web-based alcohol Personalised Normative Feedback (PNF) and whether descriptive norms mediated and/or participant motivation moderated the effectiveness of the intervention in real world conditions (i.e. no financial incentives).

METHODS

Pragmatic randomised controlled trial with 1-, 3-, and 6-month assessments. Brazilian college students reporting alcohol use in the last 12 months (N=931) were recruited from May/2020 to December/2022 and allocated to 1) No booster/single PNF(S-PNF); 2) Booster/multiple PNF(M-PNF); or 3) Assessment-only control. We applied Helmert coding [1: Any intervention (S-PNF or M-PNF) vs. Control; and 2: S-PNF vs. M-PNF].

PRIMARY OUTCOMES

typical number of drinks/week and maximum number of drinks/week; secondary outcomes: drinking frequency and number of consequences. Three-months assessment was the primary interval. Descriptive norms were tested as mediator. Interest, importance, and readiness to change were examined as moderators.

RESULTS

Compared to control, any intervention did not influence primary outcomes at 3-months or 6-months, but did at 1-month, when reduced typical drinking (IRR:0.77, 95%CI:0.66;0.90) and maximum number of drinks (IRR:0.69, 95%CI:0.58;0.82). There was an intervention effect on the consequences at 3-months. No differences were observed between S-PNF and M-PNF. No mediation effects were found at 3-months. At 6-months, there was an indirect effect on typical drinking through norms at 3-months (b=-0.82, 95%CI:-2.03;-0.12) and effects on maximum drinks through norms at 1-month (b=-0.54, 95%CI:-1.65;-0.02). No support for moderation was found.

CONCLUSIONS

Intervention reduced alcohol drinking at 1 month only and was not effective thereafter. Mechanisms of effect remain unclear.

We Don't Haze: Testing the Effectiveness of a Video-Based Hazing Prevention Training for College Students

This research reports findings from a study to explore the efficacy of a video-based training with college students to determine the extent to which the training shifted student perceptions of hazing, increased willingness and ability to intervene in situations where hazing is occurring, and altered student perceptions of hazing social norms. The study included two experimental groups and a control group at each of the three data-gathering sessions at three U.S. universities. Each of the universities belonged to the Hazing Prevention Consortium and had demonstrated a willingness to prevent hazing on their campuses. The 17-minute hazing prevention documentary We Don't Haze, developed using a bystander intervention framework, was administered in two experimental conditions: video-only and video plus facilitated discussion. Participants (n = 318) were members of a leadership development program, resident advisors, and club sport athletes and were randomly assigned to one of the two treatment groups or the control group. Students who viewed the video-based training and students who viewed the video and engaged in a follow-up facilitated discussion significantly shifted their perceptions of hazing and indicated an increased willingness and ability to intervene and help others who are experiencing or have experienced hazing, compared to students who viewed a general leadership video. The results of this study indicate that the tested hazing prevention trainings-both the stand-alone video, We Don't Haze, and the video plus discussion-hold promise for strengthening knowledge of the full range of harm associated with hazing, while amplifying perceptions that support hazing prevention and diminishing perceptions that contribute to normalizing hazing.

Students' Perceptions on the Effectiveness of a Computer-Delivered Alcohol Intervention

Objective: Social adjustment, including alcohol use, directly affects the success of college students. Due to an increased reliance on computer-delivered alcohol interventions (CDIs) a need has emerged to further investigate alcohol use and web-based interventions. Methods: In-depth focus group interviews were conducted with 51 undergraduate students to elicit information from students on the shared experience of participating in a CDI. Results: Participants identified the influence of gender, culture, parents, and family on alcohol use behavior. A difference in personal factors, previous exposure, and experiences can affect the attitudes, behaviors, and outcomes of a CDI. Conclusion: Multiple approaches geared towards a wide variety of students from different backgrounds and environments are needed to be truly successful in preventing alcohol misuse.

Peer- and web-based interventions for risky drinking among US National Guard members: Mission Strong randomized controlled trial

AIMS

To test separatel the efficacy of a web-based and a peer-based brief intervention (BI), compared with an expanded usual care control (EUC) group, among military reserve component members using alcohoI in a hazardous and harmful manner.

DESIGN

In the randomized controlled trial, participants were assigned to: [1] web-based BI with web-based boosters (BI + web), [2] web-based BI with peer-based boosters (BI + peer) or [3] enhanced usual care (EUC).

SETTING

Michigan, USA.

PARTICIPANTS

A total of 739 Michigan Army National Guard members who reported recent hazardous alcohol use; 84% were male, the mean age was 28 years.

INTERVENTION

The BI consisted of an interactive program guided by a personally selected avatar. Boosters were delivered either on the web or personally by a trained veteran peer. A pamphlet, given to all participants, included information on hazardous alcohol use and military-specific community resources and served as the EUC condition.

MEASUREMENTS

The primary outcome measure was binge drinking episodes in the past 30 days, measured at 12 months after the BI.

FINDINGS

All randomized participants were included in the outcome analyses. In adjusted analyses, BI + peer [beta = -0.43, 95% confidence interval (CI) = -0.56 to -0.31, P < 0.001] and BI + web (beta = -0.34, 95% CI = -0.46 to -0.23, P < 0.001) reduced binge drinking compared with EUC.

CONCLUSION

This satudy was a web-based brief intervention for hazardous alcohol use, with either web- or peer-based boosters, reduced binge alcohol use among Army National Guard members.

Cross-Tailoring Integrative Alcohol and Risky Sexual Behavior Feedback for College Students: Protocol for a Hybrid Type 1 Effectiveness-Implementation Trial

BACKGROUND

Underage drinking and related risky sexual behavior (RSB) are major public health concerns on United States college campuses. Although technology-delivered personalized feedback interventions (PFIs) are considered a best practice for individual-level campus alcohol prevention, there is room for improving the effectiveness of this approach with regard to alcohol-related RSB.

OBJECTIVE

The aims of this study are to (1) evaluate the impact of a brief PFI that integrates content on alcohol use and RSB and is adapted to include a novel cross-tailored dynamic feedback (CDF) component for at-risk first-year college students and (2) identify implementation factors critical to the CDF's success to facilitate future scale-up in campus settings.

METHODS

This study uses a hybrid type 1 effectiveness-implementation design and will be conducted in 3 phases. Phase 1 is a stakeholder-engaged PFI+CDF adaptation guided by focus groups and usability testing. In phase 2, 600 first-year college students who drink and are sexually active will be recruited from 2 sites (n=300 per site) to participate in a 4-group randomized controlled trial to examine the effectiveness of PFI+CDF in reducing alcohol-related RSB. Eligible participants will complete a baseline survey during the first week of the semester and follow-up surveys at 1, 2, 3, 6, and 13 months post baseline. Phase 3 is a qualitative evaluation with stakeholders to better understand relevant implementation factors.

RESULTS

Recruitment and enrollment for phase 1 began in January 2022. Recruitment for phases 2 and 3 is planned for the summer of 2023 and 2024, respectively. Upon collection of data, the effectiveness of PFI+CDF will be examined, and factors critical to implementation will be evaluated.

CONCLUSIONS

This hybrid type 1 trial is designed to impact the field by testing an innovative adaptation that extends evidence-based alcohol programs to reduce alcohol-related RSB and provides insights related to implementation to bridge the gap between research and practice at the university level.

TRIAL REGISTRATION

ClinicalTrials.gov NCT05011903; https://clinicaltrials.gov/ct2/show/NCT05011903.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/43986.

Data Quality and Study Compliance Among College Students Across 2 Recruitment Sources: Two Study Investigation

BACKGROUND

Models of satisficing suggest that study participants may not fully process survey items and provide accurate responses when survey burden is higher and when participant motivation is lower. Participants who do not fully process survey instructions can reduce a study's power and hinder generalizability. Common concerns among researchers using self-report measures are data quality and participant compliance. Similarly, attrition can hurt the power and generalizability of a study.

OBJECTIVE

Given that college students comprise most samples in psychological studies, especially examinations of student issues and psychological health, it is critical to understand how college student recruitment sources impact data quality (operationalized as attention check items with directive instructions and correct answers) and retention (operationalized as the completion of follow-up surveys over time). This examination aimed to examine the following: whether data quality varies across recruitment sources, whether study retention varies across recruitment sources, the impact of data quality on study variable associations, the impact of data quality on measures of internal consistency, and whether the demographic qualities of participants significantly vary across those who failed attention checks versus those who did not.

METHODS

This examination was a follow-up analysis of 2 previously published studies to explore data quality and study compliance. Study 1 was a cross-sectional, web-based survey examining college stressors and psychological health (282/407, 69.3% female; 230/407, 56.5% White, 113/407, 27.8% Black; mean age 22.65, SD 6.73 years). Study 2 was a longitudinal college drinking intervention trial with an in-person baseline session and 2 web-based follow-up surveys (378/528, 71.6% female; 213/528, 40.3% White, 277/528, 52.5% Black; mean age 19.85, SD 1.65 years). Attention checks were included in both studies to assess data quality. Participants for both studies were recruited from a psychology participation pool (a pull-in method; for course credit) and the general student body (a push-out method; for monetary payment or raffle entry).

RESULTS

A greater proportion of participants recruited through the psychology pool failed attention checks in both studies, suggesting poorer data quality. The psychology pool was also associated with lower retention rates over time. After screening out those who failed attention checks, some correlations among the study variables were stronger, some were weaker, and some were fairly similar, potentially suggesting bias introduced by including these participants. Differences among the indicators of internal consistency for the study measures were negligible. Finally, attention check failure was not significantly associated with most demographic characteristics but varied across some racial identities. This suggests that filtering out data from participants who failed attention checks may not limit sample diversity.

CONCLUSIONS

Investigators conducting college student research should carefully consider recruitment and include attention checks or other means of detecting poor quality data. Recommendations for researchers are discussed.

Does abstaining from alcohol in high school moderate intervention effects for college students? Implications for tiered intervention strategies

Brief motivational intervention (BMI) and personalized feedback intervention (PFI) are individual-focused brief alcohol intervention approaches that have been proven efficacious for reducing alcohol use among college students and young adults. Although the efficacy of these two intervention approaches has been well established, little is known about the factors that may modify their effects on alcohol outcomes. In particular, high school drinking may be a risk factor for continued and heightened use of alcohol in college, and thus may influence the outcomes of BMI and PFI. The purpose of this study was to investigate whether high school drinking was associated with different intervention outcomes among students who received PFI compared to those who received BMI. We conducted moderation analyses examining 348 mandated students (60.1% male; 73.3% White; and 61.5% first-year student) who were randomly assigned to either a BMI or a PFI and whose alcohol consumption was assessed at 4-month and 15-month follow-ups. Results from marginalized zero-inflated Poisson models showed that high school drinking moderated the effects of PFI and BMI at the 4-month follow-up but not at the 15-month follow-up. Specifically, students who reported no drinking in their senior year of high school consumed a 49% higher mean number of drinks after receiving BMI than PFI at the 4-month follow-up. The results suggest that alcohol consumption in high school may be informative when screening and allocating students to appropriate alcohol interventions to meet their different needs.

Criterion Validity of Protective Behavioral Strategies for Alcohol Consumption among College Students: Comparison across Two Measures

BACKGROUND

Protective behavioral strategies (PBS), or behaviors used to reduce harm associated with alcohol use, are often associated with lower levels of alcohol consumption, lower engagement in high-risk drinking behaviors, and fewer alcohol-related consequences. Although the majority of studies have found significant associations between higher PBS use and lower consumption or consequences, some studies have found nonsignificant or even positive associations. One explanatory hypothesis is that the mixed findings are due to differential content in PBS measures.

OBJECTIVES

The current study examined the criterion validity of two widely-used PBS measures, the PBSS and the SQ. In a multi-institution online study assessing alcohol outcomes, college drinkers were randomly assigned to complete one PBS measure. Both measures had the same response options to standardize assessment and focus on content.

RESULTS

Findings suggest both measures of PBS are consistently predictive of alcohol outcomes among college drinkers, across multiple subpopulations (i.e., strength of association was not moderated by sex, race, or drinking level).

CONCLUSIONS/IMPORTANCE

Some PBS subscales were more impactful than others, suggesting researchers may want to choose which PBS scale to use based on outcomes of interest, or after determining if alternatives to drinking is an important facet of PBS for the research questions being examined. Moreover, the differential findings for subscales suggest that prevention and intervention programs incorporating PBS should focus on strategies that avoid high-risk scenarios (e.g., avoiding shots or drinking games), rather than general strategies of self-pacing.

Examining Emailed Feedback as Boosters After a College Drinking Intervention Among Fraternities and Sororities: Rationale and Protocol for a Remote Controlled Trial (Project Greek)

Background

College students involved in Greek life (ie, members of fraternities and sororities) tend to engage in more high-risk alcohol use and experience more negative consequences than those not involved in Greek life. Web-based alcohol interventions, such as Alcohol eCHECKUP TO GO, have been successful in reducing alcohol use and consequences among the general college student population, but interventions targeting alcohol reduction among those involved in Greek life have had limited success. Booster emails including personalized feedback regarding descriptive norms and protective behavioral strategies have shown potential in increasing the effectiveness of web-based interventions among college drinkers. Studies are needed to determine the efficacy of these boosters among those involved in Greek life.

Objective

The primary objective of this study is to assess the efficacy of booster emails sent to Greek life students who complete Alcohol eCHECKUP TO GO. Specifically, we expect that participants who receive the booster emails will reduce their alcohol consumption and related problems (primary aim 1), reduce perceived peer drinking, and increase the number of protective behavioral strategies they use over time (primary aim 2) relative to those who do not receive boosters. Contingent upon finding the emailed booster efficacious and sufficient enrollment of members from each organization, an exploratory aim is to examine social mechanisms of change (ie, through selection vs socialization).

Methods

This study is a remote, controlled intervention trial following participants for up to 6 months. Participants must be aged at least 18 years, undergraduate students, and members of a participating fraternity or sorority. Eligible participants complete a web-based baseline survey to assess their alcohol consumption behaviors and beliefs, including norms and protective behavioral strategies, and information about their social networks. After completing the baseline survey, they participate in the web-based intervention. Follow-up surveys are sent 1, 3, and 6 months after the intervention. Those in the booster condition also receive emails containing personalized feedback at 2 weeks and 14 weeks after the intervention. Latent growth models and R-Simulation Investigation for Empirical Network Analysis will be used to analyze the data.

Results

As of September 2022, we have enrolled 18 participants from 2 fraternities and 2 sororities, and they have completed the baseline survey. Overall, 72% (13/18) of participants have completed the 1-month follow-up. Enrollment will continue through December 2022.

Conclusions

This study aims to examine the effectiveness of personalized feedback booster emails sent after an alcohol intervention among members of college Greek life. A secondary, exploratory aim is to provide information about social mechanisms of change (if possible). The current methodology targets whole network recruitment, with chapter presidents serving as gatekeepers and facilitators. Unique challenges of recruiting whole networks and working with campus administrators are discussed.

Trial Registration

ClinicalTrials.gov NCT05107284; https://clinicaltrials.gov/ct2/show/NCT05107284

International Registered Report Identifier (IRRID)

DERR1-10.2196/42535

Examining the added value of harm reduction strategies to emailed boosters to extend the effects of online interventions for college drinkers

Objective: Brief computer-delivered interventions (CDIs) reduce college student drinking and related problems but can be less efficacious and enduring than in-person interventions. The present study examined: (a) the utility of emailed personalized boosters after an evidence-based online CDI for alcohol (i.e., eCHECKUP TO GO), and (b) the added value of including protective behavioral strategies (PBS) in boosters containing personalized normative feedback (PNF) versus PNF alone. Method: 528 young adult (ages 18-24) college drinkers (71.6% female; 52.5% Black, 40.3% White) with a mean age of 19.9 years (SD = 1.65) were randomized to receive: CDI-only; CDI plus a PNF-only booster; or CDI plus a booster containing both PNF and PBS feedback. Booster emails were sent 2 weeks post-intervention. Online surveys completed pre-intervention and at 1 and 3 months assessed alcohol consumption, problems, descriptive normative perceptions, and PBS use. Results: The CDI led to significant reductions in alcohol consumption across all conditions, with no effect of boosters on drinking. Controlling for quantity, no reductions in problems were observed. Descriptive norms reduced significantly, with no condition differences. Only PBS use showed condition effects, such that the CDI-only and PNF-only booster groups reported reduced PBS use at 1 month, but the norms-plus-PBS booster group did not. Conclusions: The CDI was sufficient to change alcohol consumption and perceived norms without boosters, although the inclusion of boosters with PBS feedback may mitigate against PBS use reductions. Longer follow-ups may detect delayed booster benefits, or a larger dose through repeated exposure over time may be needed. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

PRACT: a pragmatic randomized adaptive clinical trial protocol to investigate a culturally adapted brief negotiational intervention for alcohol use in the emergency department in Tanzania

BACKGROUND

Alcohol use in resource-limited settings results in significant morbidity and mortality. These settings lack the necessary specialty-trained personnel and infrastructure. Therefore, implementing evidence-based interventions from high-income settings, like a brief negotiational intervention (BNI) for alcohol, will require rapid production of evidence of effectiveness to guide implementation priorities. Thus, this study describes a clinical trial protocol to rapidly optimize and evaluate the impact of a culturally adapted BNI to reduce alcohol-related harms and alcohol consumption among injury patients.

METHODS

Our pragmatic, adaptive, randomized controlled trial (PRACT) is designed to determine the most effective intervention approach to reduce hazardous alcohol use among adult (≥18 years old) in acute (< 24 h) injury patients. Our culturally adapted, nurse-delivered, intervention (PPKAY) has been augmented with evidence-based, culturally appropriate standards and will be evaluated as follows. Stage 1 of the trial will determine if PPKAY, either with a standard short-message-service (SMS) booster or with a personalized SMS booster is more effective than usual care (UC). While optimizing statistical efficiency, Stage 2 drops the UC arm to compare the PPKAY with a standard SMS booster to PPKAY with a personalized SMS booster. Finally, in Stage 3, the more effective arm in Stage 2 is compared to PPKAY without an SMS booster. The study population is acute injury patients who present to Kilimanjaro Christian Medical Centre, Tanzania, who (1) test alcohol positive by breathalyzer upon arrival; (2) have an Alcohol Use Disorder Identification Test of 8 or above; and/or (3) have reported drinking alcohol prior to their injury. Outcome measures will be evaluated for all arms at 3, 6, 9, 12, and 24 months. The primary outcome for the study is the reduction of the number of binge drinking days in the 4 weeks prior to follow-up. Secondary outcomes include alcohol-related consequences, measured by the Drinker Inventory of Consequences.

DISCUSSION

The findings from this study will be critically important to identify alcohol harm reduction strategies where alcohol research and interventions are scarce. Our innovative and adaptive trial design can transform behavior change research and identify the most effective nurse-driven intervention to be targeted for integration into standard care.

TRIAL REGISTRATION

ClinicalTrials.gov NCT04535011 . Registered on September 1, 2020.

Predictors of Booster Engagement Following a Web-Based Brief Intervention for Alcohol Misuse Among National Guard Members: Secondary Analysis of a Randomized Controlled Trial

BACKGROUND

Alcohol misuse is a major health concern among military members. Reserve component members face unique barriers as they live off base with limited access to behavioral health services. Web and app-based brief interventions are a promising means to improve access to treatment for those who misuse alcohol, with the use of booster sessions to enhance effectiveness, solidify gains, and reinforce changes. However, little is known about who will engage in booster sessions.

OBJECTIVE

This study aims to evaluate booster engagement across booster delivery modalities (Web and Peer) and identify participant-specific factors associated with booster session engagement.

METHODS

Following a brief web-based alcohol misuse intervention in National Guard members (N=739), we examined engagement in a series of three booster sessions. Using unadjusted and adjusted models, demographic and clinical characteristics that may serve as predictors of booster session engagement were examined across the 2 arms of the trial with different types of booster sessions: peer-delivered (N=245) and web-delivered (N=246).

RESULTS

Booster session completion was greater for Peer than Web Booster sessions, with 142 (58%) service members in the Peer Booster arm completing all three boosters compared with only 108 (44%) of participants in the Web Booster arm (χ²₃=10.3; P=.006). In a model in which the 2 groups were combined, socioeconomic factors predicted booster engagement. In separate models, the demographic and clinical predictors of booster engagement varied between the 2 delivery modalities.

CONCLUSIONS

The use of peer-delivered boosters, especially among subsets of reserve members at risk of lack of engagement, may foster greater uptake and improve treatment outcomes.

TRIAL REGISTRATION

ClinicalTrials.gov NCT02181283; https://clinicaltrials.gov/ct2/show/NCT02181283.

Factor analysis of a short form of the Protective Behavioral Strategies for Marijuana scale

OBJECTIVE

The Protective Behavioral Strategies for Marijuana Scale (PBSM), a 17-item scale targeting strategies for mitigating the negative consequences of cannabis use, highlights a range of behaviors that can reduce harm beyond straightforward decreases in quantity or frequency. The 17-item scale's factor structure remains under-examined but could reveal meaningful distinctions among strategies. This study aimed to confirm the factor structure of the short form of the PBSM.

METHODS

This study recruited cannabis-using undergraduates (N = 454,M_age = 19.6, 68.8% female, 39% White), who reported using cannabis approximately 2.3 days per week with mild cannabis-related consequences (CAPQ; M = 9.74).

RESULTS

A confirmatory factor analysis demonstrated poor fit for the one-factor model of the PBSM, prompting an exploratory factor analysis. Analyses revealed two internally reliable factors: a "Quantity" factor, strategies specific to mitigating overuse and limiting amounts consumed and an "Context" factor loosely related to troubles with others. This two-factor model accounted for over half of the total variance; invariance testing indicated reduced fit as models became more restrictive. Though each of the factors covaried negatively with both days of use and problems, Context had a stronger relation to both variables compared to Quantity. Only Context predicted fewer cannabis problems and use.

CONCLUSIONS

The two-factor solution suggests further work on the psychometric properties of the scale could provide heuristic information to allow for more nuanced approaches in clinical and research settings. Theoretically, each factor might have novel links to some constructs but not others in ways that could assist harm-reduction strategies and treatment.

A systematic review of alcohol education programs for young people: do these programs change behavior?

Numerous education programs have addressed young peoples' alcohol use. To date, no peer-reviewed publication has evaluated the effectiveness of such programs delivered across a range of contexts to change alcohol-related behaviors, attitudes and/or knowledge. This systematic review aimed to identify alcohol education programs addressing young people, and determine whether they changed alcohol-related behavior, knowledge and attitudes; and, ascertain components of successful programs. Studies were identified, guided by the PRISMA review process, from the earliest records until June 2020. Included studies (N = 70) comprised an alcohol education program which focused on young people (15-24 years). Forty programs reported behavior changes, and these programs were the highest quality. Others impacted attitudes and/or knowledge only (n = 12); or reported no impacts (n = 17). Recent programs were more likely than older programs to feature online delivery and report behavior changes. To enhance alcohol education, future programs should include the identified quality criteria, alongside process and long-term outcome evaluations, to better monitor effectiveness. Findings indicated some education programs have capacity to positively change alcohol-related behavior; however, outcome consistency varied even in high-quality programs. Alcohol education programs should be designed alongside health education/promotion models and best-practice recommendations, to improve the likelihood of desirable behavior-related outcomes.

Development of a Measure to Assess Protective Behavioral Strategies for Pregaming among Young Adults

Background: Although most young adults drink alcohol, there are specific drinking contexts that are associated with increased risk for alcohol-related consequences. One such drinking context is pregaming, which typically involves heavy drinking in brief periods of time and has consistently been linked to consequences within the pregaming event itself, on a night after pregaming, and in the long-term. Intervention efforts that specifically target this risky behavior are needed, but these efforts need to be informed by empirical work to better understand what behaviors young people engage in that can protect them from pregaming-related harms. Purpose: We designed this study to create a measure of protective behavioral strategies that young people use before, during, and after pregaming to inform future intervention work. Methods: We tested an item pool with 363 young adult college students who engaged in pregaming in the past year and conducted exploratory factor analysis to develop a 19-item Protective Behavioral Strategies for Pregaming (PBSP) scale, which featured four subscales of safety and familiarity, setting drink limits, pacing strategies, and minimizing intoxication. Results: Each subscale negatively and significantly correlated with measures of alcohol use and consequences, though subscales differed in their associations with specific pregaming outcomes and by sex. Conclusion: This initial exploratory examination of the PBSP scale's psychometric properties suggests that use of protective behavioral strategies used specifically during pregaming events may protect young people from heavy drinking and harms. More research with the PBSP scale is encouraged to determine its practical utility as a clinical and assessment tool with young people.

Descriptive Norms but not Harm Reduction Strategies as a Mediator of Personalized Boosters After a Computerized College Drinking Intervention

BACKGROUND

Computer-delivered programs to reduce college drinking have strong appeal but are sometimes less efficacious than their in-person counterparts. Boosters may be an ideal way to strengthen and extend the effects of computerized interventions while maintaining low cost and easy dissemination. However, little is known about how they work. Consequently, the current study aimed to explore descriptive perceived drinking norms and use of protective behavioral strategies (PBS) as potential mediators of booster effects. We also examined norms and PBS as mediators of the main intervention. The present study was a follow-up analysis of data from a randomized controlled trial (Alcohol Clin Exp Res 42, 2018, 1735) testing the efficacy of emailed boosters containing personalized feedback after a computerized alcohol intervention.

METHODS

Participants were 537 (67.4% women) emerging adult college drinkers (M age = 19.65, SD = 1.67). They were randomly assigned to one of 3 conditions: general health education, alcohol intervention only, or alcohol intervention plus booster email. Participants completed assessments at baseline and follow-ups through 9 months.

RESULTS

Descriptive norms were a mediator of booster efficacy where receiving the booster yielded stronger reductions in alcohol use through reduced concurrent norms; however, fully longitudinal models did not reach significance. There was also an indirect effect for the intervention where those who received the intervention experienced an increase in drinking through increased concurrent norms. However, a stronger direct effect was found where those who received the intervention experienced a stronger decrease in drinking after controlling for norms. There was no support for PBS as a mediator of booster or intervention efficacy.

CONCLUSIONS

The present study was the first, to our knowledge, to demonstrate a potential mechanism of change in booster interventions. A simple, succinct reminder via email led to reductions in perceptions of how much peers drink, and this led to reductions in alcohol consumption. Our findings support the promise of utilizing brief and easily implemented targeted messaging to enhance the potency of computerized interventions for college drinkers.

Short- and long-term effects of digital prevention and treatment interventions for cannabis use reduction: A systematic review and meta-analysis

BACKGROUND

Frequent Cannabis use has been linked to a variety of negative mental, physical, and social consequences. We assessed the effects of digital prevention and treatment interventions on Cannabis use reduction in comparison with control conditions.

METHODS

Systematic review with two separate meta-analyses. Thirty randomized controlled trials met the inclusion criteria for the review, and 21 were included in the meta-analyses. Primary outcome was self-reported Cannabis use at post-treatment and follow-up. Hedges's g was calculated for all comparisons with non-active control. Risk of bias was examined with the Cochrane risk-of-bias tool.

RESULTS

The systematic review included 10 prevention interventions targeting 8138 participants (aged 12 to 20) and 20 treatment interventions targeting 5195 Cannabis users (aged 16 to 40). The meta-analyses showed significantly reduced Cannabis use at post-treatment in the prevention interventions (6 studies, N = 2564, g = 0.33; 95% CI 0.13 to 0.54, p =  0.001) and in the treatment interventions (17 comparisons, N = 3813, g = 0.12; 95% CI 0.02 to 0.22, p =  0.02) as compared with controls. The effects of prevention interventions were maintained at follow-ups of up to 12 months (5 comparisons, N = 2445, g = 0.22; 95% CI 0.12 to 0.33, p <  0.001) but were no longer statistically significant for treatment interventions.

CONCLUSIONS

Digital prevention and treatment interventions showed small, significant reduction effects on Cannabis use in diverse target populations at post-treatment compared to controls. For prevention interventions, the post-treatment effects were maintained at follow-up up to 12 months later.

Do misperceptions of peer drinking influence personal drinking behavior? Results from a complete social network of first-year college students

This study considered the influence of misperceptions of typical versus self-identified important peers' heavy drinking on personal heavy drinking intentions and frequency utilizing data from a complete social network of college students. The study sample included data from 1,313 students (44% male, 57% White, 15% Hispanic/Latinx) collected during the fall and spring semesters of their freshman year. Students provided perceived heavy drinking frequency for a typical student peer and up to 10 identified important peers. Personal past-month heavy drinking frequency was assessed for all participants at both time points. By comparing actual with perceived heavy drinking frequencies, measures of misperceptions of heavy drinking (accurately estimate, overestimate, underestimate) were constructed for both general and important peers. These misperceptions were then used as predictors of concurrent and prospective personal heavy drinking frequency and intentions using network autocorrelation analyses. The majority of students (84.8%) overestimated, 11.3% accurately estimated, and 3.9% underestimated heavy drinking among their general peers, whereas 42.0% accurately estimated, 36.9% overestimated, and 21.1% underestimated important peers' heavy drinking. For both referents, overestimation of peer heavy drinking was associated with more frequent heavy drinking and higher drinking intentions at both time points. Importantly, the effects of underestimating and overestimating close peers' drinking on personal alcohol use were significant after controlling for the influence of misperceptions of general peers' heavy drinking. Close peers are a critical referent group in assessments related to social norms for young adult alcohol use. Implications for prevention and intervention are discussed. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

How much does your peer group really drink? Examining the relative impact of overestimation, actual group drinking and perceived campus norms on university students' heavy alcohol use

INTRODUCTION

We had 3 aims for this study: (1) to explore the relative impact of perceived drinking group norms versus campus drinking norms on university students' heavy alcohol use, (2) to examine how students' overestimation of their drinking group norms predicts individual heavy alcohol use, while controlling for actual group drinking, and (3) to test if the interaction between overestimation and actual group drinking predicts increased student drinking. Further, we adopted a longitudinal design to tease apart within- and between-person effects in the aforementioned relationships.

METHODS

University students (N = 118, M_age, 19.40, SD = 1.49, 60.2% women) were recruited in their peer drinking groups and all group members completed 3 online surveys in two-month intervals. Overestimation was calculated as the difference between students' perceptions of their drinking groups' HED and the actual reported HED of group members.

RESULTS

As expected, results demonstrated notable overestimation of group HED. Further, key results of multilevel growth curve modeling demonstrated that at time points when university students overestimated their drinking groups' HED more than they usually do (i.e., more than their average), they increase in their own HED. Similar within-person results were not found for campus drinking norms or actual group HED and the interaction between overestimation and actual group HED was not significant.

CONCLUSIONS

Findings emphasize the importance of incorporating the peer drinking group as a reference group in personalized normative feedback interventions.

Using e-mail boosters to maintain change after brief alcohol interventions for mandated college students: A randomized controlled trial

OBJECTIVE

Brief motivational interventions (BMIs) reduce drinking in the short term, but these initial effects often decay. We tested the hypothesis that theory-based e-mail boosters would promote maintenance of change after a BMI.

METHOD

Participants were students (N = 568; 72% male) who violated campus alcohol policy and were mandated to participate in an alcohol-risk-reduction program. Participants provided baseline data, received a BMI, and then completed a 1-month post-BMI survey. Next, they were randomized to receive 12 booster e-mails that contained either (a) alcohol norms or (b) structurally equivalent general health information (control). Alcohol consumption and alcohol-related consequences were assessed at baseline, 1, 3, 5, 8, and 12 months.

RESULTS

As expected, we observed significant reductions in both consumption and consequences after the BMI (ps < .01), and groups were equivalent at baseline and at 1-month post-BMI, prior to randomization (ps > .05). Latent growth curve models revealed no condition effects on changes in the latent consumption variable from 1- to 12-month follow-ups (b = .01, SE = .01, p > .05). Unexpectedly, a main effect of the condition emerged for self-reported consequences (b = .03, SE = .01, p = .01); we observed more consequences after boosters containing alcohol norms than general health information. Outcomes were not moderated by sex, consumption at baseline or 1 month, or e-mail exposure, and there was no mediation by descriptive norms, injunctive norms, or peer communication.

CONCLUSIONS

Contrary to predictions, e-mail boosters with corrective norms content did not improve outcomes after a BMI. (PsycINFO Database Record

Feasibility and Effects of Digital Interventions to Support People in Recovery From Substance Use Disorders: Systematic Review

Background

The development and evaluation of digital interventions aimed at preventing or treating substance use–related problems and disorders is a rapidly growing field. Previous reviews of such interventions reveal a large and complex picture with regard to targeted users, use, and efficacy.

Objective

The objective of this review was to investigate the feasibility and effects of interventions developed specifically for digital platforms. These interventions are focused on supporting people in recovery from substance use disorders by helping them achieve their substance use goals and develop a more satisfying life situation.

Methods

The review is based on a systematic search in MEDLINE, Embase, PsycInfo, and Cochrane Library databases. Of the 1149 identified articles, 722 were excluded as obviously not relevant. Of the remaining articles, 21 were found to be previous reviews, 269 were on interventions aimed at reducing hazardous alcohol or cannabis use, and 94 were on digitized versions of standard treatment methods. The remaining 43 articles were all read in full and systematically scored by both authors.

Results

The 43 articles cover 28 unique interventions, of which 33 have been published after 2013. The interventions are aimed at different target groups (defined by age, substance, or comorbidity). Based on the number of features or modules, the interventions can be categorized as simple or complex. Fourteen of the 18 simple interventions and 9 of the 10 complex interventions have been studied with quantitative controlled methodologies. Thirteen of the 18 simple interventions are integrated in other treatment or support systems, mainly delivered as mobile phone apps, while 6 of the 10 complex interventions are designed as stand-alone interventions, most often delivered on a platform combining desktop/Web and mobile phone technologies. The interventions were generally easy to implement, but in most cases the implementation of the complex interventions was found to be dependent on sustained organizational support. Between 70% and 90% of the participants found the interventions to be useful and easy to use. The rates of sustained use were also generally high, except for simple interventions with an open internet-based recruitment and some information and education modules of the complex interventions. Across all interventions, slightly more than half (55%) of the studies with control groups generated positive findings on 1 or more substance use outcomes, with 57% of the interventions also found to be efficacious in 1 or more studies. In the positive studies, effects were typically in the small to moderate range, with a few studies yielding larger effects. Largely due to the inclusion of stronger control conditions, studies of simple interventions were less likely to produce positive effects.

Conclusions

The digital interventions included in this review are in general feasible but are not consistently effective in helping people in recovery from substance use disorder reduce their substance use or achieving other recovery goals.

Personalized Boosters After a Computerized Intervention Targeting College Drinking: A Randomized Controlled Trial

BACKGROUND

Problematic drinking among emerging adult college students is extensive. Computer-delivered interventions (CDIs) have strong appeal because they can be quickly delivered to large numbers of students. Although they are efficacious in the short term, CDIs are not as efficacious as in-person interventions longer term. This study examined the utility of emailed boosters containing personalized feedback after a CDI to enhance and extend reductions among emerging adult college drinkers. Sex and age were explored as potential moderators.

METHODS

Participants were 537 college students (67.4% female) aged 18 to 24 years (M age = 19.65, SD = 1.67) who consumed at least 1 alcoholic drink in the past 2 weeks. They were randomly assigned to CDI-only, CDI + booster email, or an assessment-only control condition, and were assessed up to 9 months postintervention. A booster email with personalized feedback was sent to the CDI + booster email group 2 weeks after completion of the CDI.

RESULTS

Moderation findings for age revealed that the booster may be an effective means to strengthen and extend intervention effects for emerging adults who are of legal drinking age. However, effects were negligible for underage drinkers. Although the booster effect for the overall sample demonstrated a trend in the expected direction, it failed to reach significance. Booster effects were not significantly moderated by sex. Intervention effects were not moderated by either age or sex.

CONCLUSIONS

The present investigation contributes to a limited body of research on boosters to augment main intervention effects in college drinkers. Our study demonstrated that a brief CDI plus a simple email booster with personalized feedback resulted in significant reductions in drinking outcomes for emerging adults of legal drinking age. Efforts to further develop and refine intervention booster strategies represent a promising future direction to minimize harmful drinking among college students.

Mediators and Moderators of a Personalized Feedback Alcohol Intervention for Nonstudent Emerging Adult Drinkers

BACKGROUND

The main objective of this study was to test proposed mediators and moderators of a personalized feedback alcohol intervention (PFI) on alcohol use. Data for the current investigation came from an earlier randomized controlled trial of a PFI targeted for nonstudent heavy drinkers between 18 and 25 years.

METHODS

Participants were 164 (65.9% men) drinkers recruited from the community. They were randomly assigned to either a single-session PFI or an assessment-only (AO) control group. Follow-up assessments at 1 and 3 months were included for analysis.

RESULTS

Perceived drinking norms mediated the intervention effect on quantity, frequency, and peak drinking; 2 dimensions of protective behavioral strategies (PBS) mediated the intervention effect on peak drinking; and drinking to cope motives did not mediate any drinking outcomes. Of the moderating factors examined (i.e., norms, PBS, drink to cope motives, age, gender), only PBS related to serious harm reduction moderated intervention impact. Specifically, for those high in serious harm reduction PBS at baseline, postintervention reductions in drinking were stronger for the PFI group compared to AO.

CONCLUSIONS

Overall, findings highlight the importance of correcting misperceived drinking norms and addressing the use of specific PBS in brief interventions. The knowledge gained from this study represents an important step toward minimizing drinking-related harms that are disproportionately experienced by those with lower educational attainment.

A Randomized Trial of a Personalized Feedback Intervention for Nonstudent Emerging Adult At-Risk Drinkers

BACKGROUND

Emerging adulthood is a period of heightened vulnerability for problematic alcohol use. Considerable research has been devoted to reducing alcohol risks in college student populations, although far less effort has focused on their noncollege-attending peers. Research targeting nonstudent emerging adults is critical as this group is at risk of experiencing alcohol-related harms. Consequently, the main objective of the present randomized study was to examine the preliminary efficacy of a brief personalized feedback intervention (PFI) tailored for nonstudent at-risk drinkers. We also examined the influence of gender on intervention outcomes. Finally, we explored participant acceptability of the intervention.

METHODS

Participants were 164 (65.9% men) emerging adults (M age = 21.98, SD = 2.02) recruited from the community. They were randomly assigned to either a 50-minute, in-person PFI or an assessment-only control group and were assessed over 9 months postintervention.

RESULTS

Results showed that for short-term change (1 month), the PFI condition reduced drinking significantly more than controls. For longer-term change (1 to 9 months), both conditions continued to show gradual decline in consumption. The groups did not differ in alcohol-related problems, and the intervention was equally effective for both women and men. Regarding acceptability, participants were extremely satisfied with the intervention, perceived the information to be personally relevant, and thought it provided them a new way of looking at their own drinking.

CONCLUSIONS

Overall, the present research advanced knowledge regarding an understudied and at-risk group of drinkers. This is among one of the first randomized studies to evaluate a brief intervention tailored to the needs of nonstudent emerging adults based on prior formative research with this group. Our data support PFI as a promising intervention approach for nonstudent drinkers in the community. Ultimately, this line of research aims to reduce alcohol-related health disparities associated with inequities in education.

Randomized controlled trial of a very brief, multicomponent web-based alcohol intervention for undergraduates with a focus on protective behavioral strategies

OBJECTIVE

Tertiary Health Research Intervention via Email (THRIVE), a very brief, freely available, multicomponent Web-based alcohol intervention originally developed and tested among students in Australia and New Zealand, was tested in the United States. We also evaluated effects of systematically varying the protective behavioral strategies (PBS) component of the intervention to include shorter, focused lists of direct (e.g., alternating alcoholic with nonalcoholic drinks) or indirect (e.g., looking out for friends) strategies.

METHOD

Undergraduates with past-month heavy drinking (N = 208) were randomized to education/assessment control or one of three U.S.-THRIVE variants, including direct PBS only, indirect PBS only, or full (direct and indirect PBS).

RESULTS

After 1 month, compared to the control condition, full condition participants reported fewer drinks per week (rate ratio [RR] = .62) and lower peak drinking (RR = .74). The indirect-only condition reported reduced peak drinking (RR = .74) and a trend toward fewer drinks per week (RR = .78). Changes in drinking relative to control were significant through 6 months for the full and indirect-only conditions. There were no significant differences between the direct-only and control conditions. U.S.-THRIVE was not associated with decreased heavy drinking or alcohol-related problems relative to control.

CONCLUSIONS

To our knowledge, this was the first study to systematically vary the types of PBS provided in an intervention. Initial results suggest U.S.-THRIVE is efficacious. Compared to control, presenting indirect PBS only as part of U.S.-THRIVE was associated with lower drinks per week and peak past 30-day drinking. Targeting indirect PBS may be more appropriate for non-treatment-seeking young adults receiving a brief intervention. (PsycINFO Database Record