The Prospective Effects of Parents' and Friends' Approval of Drinking on Simultaneous Alcohol and Marijuana Use during College.

Background: Recent reports indicate that simultaneous alcohol and marijuana (SAM) use is a growing health concern among college students. As SAM use consists of both alcohol and marijuana, risk factors associated with either can serve as plausible targets by prevention efforts to reduce SAM use. Objectives: To explore this, the current study investigated the direct and indirect effects of two established risk factors for drinking on SAM use: perceived parental permissiveness toward drinking and friends' approval toward drinking (injunctive norms). Method: Incoming first-year students (N = 470) reported parental permissiveness, injunctive norms, alcohol use, and SAM use at baseline (T1) and 5 months later (T2). SAM use was assessed again 15 months post-baseline (T3). Path analysis was conducted to examine whether T2 variables mediated relationships between T1 variables and T3 SAM use. Results: Results revealed that T2 student alcohol use mediated the effects of T1 parental permissiveness, injunctive norms, and alcohol use on T3 SAM use. Conclusions/Importance: Findings from this study extend research on SAM use by identifying perceived parental permissiveness and injunctive drinking norms as risk factors for SAM use through their effects on alcohol use. Based on these findings, it is plausible that parent-based interventions and interventions targeting peer injunctive norms during the first year of college could be used to effectively prevent or reduce SAM use.

Are Co-users of Alcohol and Marijuana More Willing to Experience Consequences From Drinking? A Longitudinal Examination Among First-Year College Students.

BACKGROUND: Alcohol and marijuana co-users are at heightened vulnerability for experiencing a variety of negative alcohol use outcomes including heavier alcohol use and driving under the influence. The current study explored willingness to experience negative consequences as a potential factor underlying the association between co-user status and negative consequences in an effort to guide future intervention work. From a longitudinal study of first-year college students, we examined willingness to experience consequences at Time 2 as a mediator of co-user status at Time 1 and experience of negative consequences at Time 3. METHODS: First-year college student drinkers (n = 1,914) at a large university completed surveys in the fall and spring of their freshman year and the fall of their sophomore year. RESULTS: Alcohol and marijuana co-users reported higher willingness to experience consequences than alcohol-only users. Willingness to experience consequences partially explained the association between alcohol and marijuana couse and consequences. CONCLUSIONS: The current study was the first to compare co-users of alcohol and marijuana to alcohol-only users on willingness to experience consequences, and examine the role of willingness as a mediator between co-user status and consequences experienced. Co-users were more willing to experience adverse effects from drinking, in turn predicting more consequences. Intervention work targeting consequences may be less effective for co-users; thus, additional work is needed to identify other potential mechanisms for change for this at-risk group.

An Examination of Parental Permissiveness of Alcohol Use and Monitoring, and Their Association with Emerging Adult Drinking Outcomes Across College.

BACKGROUND: Studies have shown that parents have a significant influence on emerging adult college students' drinking during the first year of college. Limited research has been conducted to address the question of whether parenting later in college continues to matter in a similar manner. The current study utilized a prospective design to identify associations between parental permissiveness toward alcohol use and monitoring behaviors and student drinking outcomes during the first and fourth years of college. METHODS: Participants (N = 1,429) at 3 large public universities completed surveys during the fall semesters of their first (T1) and fourth years (T2) (84.3% retention). The study employed a saturated autoregressive cross-lag model to examine associations between parental permissiveness of college student alcohol use, parental monitoring, student drinking, and consequences at T1 and T2, controlling for peer norms, sex, and campus. RESULTS: Examination of the association between parenting and student drinking outcomes revealed: (i) parental permissiveness was positively associated with drinking at T1 and again at T2; (ii) parental permissiveness had indirect effects on consequences via the effects on drinking at both times. Specifically, a 1-unit increase in parental permissiveness at T1 resulted in students experiencing 4 to 5 more consequences as a result of their drinking; (iii) parental permissiveness was not directly associated with monitoring at T1 or T2; and (iv) parental monitoring was significantly associated with drinking at T1 but not T2. CONCLUSIONS: The findings provide evidence for the continued importance of parenting in the fourth year of college and parents expressing low permissiveness toward student drinking may be beneficial to reducing risky drinking even as students turn 21.

A Randomized Trial on the Efficacy of Mastery Learning for Primary Care Provider Melanoma Opportunistic Screening Skills and Practice.

BACKGROUND: Early detection of melanoma represents an opportunity to reduce the burden of disease among people at increased risk for melanoma. OBJECTIVE: To develop and demonstrate the efficacy of online training. DESIGN: Randomized educational trial. PARTICIPANTS: Primary care providers (PCPs). INTERVENTION: Mastery learning course with visual and dermoscopic assessment, diagnosis and management, and deliberate practice with feedback to reach a minimum passing standard. MAIN MEASURES: Pre-test/post-test diagnostic accuracy. Referral of concerning lesions for 3 months before and after the educational intervention. KEY RESULTS: Among the 89 PCPs, 89.8% were internal medicine physicians, and the remainder were physician assistants embedded in internists' practices. There were no differences between control and intervention groups regarding gender, age, race, or percentage of full-time PCPs. The control group had more PCPs who reported less than 5 years of practice (n = 18) than the intervention group (n = 6) (χ2 [6, n = 89] = 14.34, p = 0.03). PCPs in the intervention group answered more melanoma detection questions correctly on the post-test (M = 10.05, SE = 1.24) compared to control group PCPs (M = 7.11, SE = 0.24), and had fewer false-positive and no false-negative melanoma diagnoses (intervention, M = 1.09, SE = 0. 20; control, M = 3.1, SE = 0.23; ANCOVA, F[1,378] =27.86, p < 0.001; ηp2 = 0.26). PCPs who underwent training referred fewer benign lesions, including nevi, seborrheic keratoses, and dermatofibromas, than control PCPs (F[1,79] = 72.89, p < 0.001; ηp2 = 0.489; F[1,79] = 25.82, p < 0.001; ηp2 = 0.246; F[1,79] = 34.25, p < 0.001; ηp2 = 0.302; respectively). Those receiving training referred significantly more melanomas than controls (F[1,79] = 24.38, p < 0.001; ηp2 = 0.236). Referred melanomas (0.8 ± 0.07 per month for intervention, 0.17 ± 0.06 for control) were mostly located on the head and neck. CONCLUSIONS: Mastery learning improved PCPs' ability to detect melanoma on a standardized post-test and may improve referral of patients with suspected melanoma. Further studies are needed to confirm this finding. ClinicalTrials.gov NCT02385253.

A Longitudinal Examination of Decisions to Ride and Decline Rides with Drinking Drivers.

BACKGROUND: Riding with a drinking driver (RWDD) is a serious concern that leads to numerous preventable deaths every year. There is a significant gap in research on empirically tested predictors of RWDD that could be implemented in prevention efforts. College students are in need of such prevention efforts, as they have some of the highest rates of alcohol-related crash fatalities and may engage in RWDD more than their noncollege peers. This study utilized behavioral decision-making approach to examine predictors of RWDD and declining a ride from a drinking driver (Decline) in older college students. METHODS: Students (n = 791) in their third year of college were enrolled from 3 large and diverse universities. Psychosocial (e.g., expectancies, norms) and decision-making variables (willingness to RWDD and intentions to use alternatives) were assessed in the fall of their third year. One year later, RWDD and Decline behaviors were assessed. Zero-inflated Poisson analyses were used to assess how decision-making variables predicted RWDD and Decline behavior. Associations between psychosocial and decision-making variables were also assessed. RESULTS: Thirteen percent of students reported RWDD and ~28% reported Decline behavior. Willingness to RWDD and typical weekly drinking were both associated with increases in RWDD (odds ratio [OR] = 1.58 and 1.40, respectively), whereas intentions to use alternatives, sex, and ethnicity were not associated with RWDD. Only weekly drinking was associated with Decline, with an increase in drinking associated with increased Decline (OR = 1.48). All psychosocial variables were significantly associated with the decision-making variables except positive expectancies. CONCLUSIONS: Results provide evidence that willingness to RWDD is a predictor of future RWDD, even if students intend to use safe alternatives. Future research is needed to better understand decision-making factors that influence Decline. Results also suggest prevention and interventions efforts, such as brief motivational intervention, Parent-Based Interventions, and normative feedback interventions could be adapted to reduce RWDD.

An Examination of the Relationship Between Consequence-Specific Normative Belief Patterns and Alcohol-Related Consequences Among College Students.

BACKGROUND: Research has previously identified a high-risk subgroup of college students who experience high levels of multiple and repeated alcohol-related consequences (MRC group). The purpose of this study was to examine the association between consequence-specific normative influences and experiencing multiple and repeated drinking-related consequences using a person-centered approach. Normative subgroups were identified using latent profile analysis (LPA), which were then used to predict MRC group status at 6-month follow-up. METHODS: First-year college student drinkers (N = 2,024) at a large northeastern university completed online surveys during the fall and spring semesters of their freshman year. Retention was high with 92% of invited participants completing T2, of which the MRC group accounted for 27%. RESULTS: Three student profiles were identified from LPA on T1 data: Nonpermissive Parents (77%), Positive Peer and Parent Norms (21%), and Permissive Parents (3%). Logistic regression revealed that both the Positive Peer and Parent Norms and Permissive Parents profiles had significantly higher odds of MRC group membership at follow-up (1.81 and 2.78 times greater, respectively). CONCLUSIONS: The results suggest value in prevention efforts that include normative beliefs about alcohol-related consequences. Further, parental norms in particular have the potential to enhance interventions, especially through direct communication of disapproval for experiencing consequences.

First- and second-hand consequences of alcohol in college: Differential associations with later alcohol use.

INTRODUCTION: College students are at increased risk of experiencing a variety of consequences as result of their own as well as others' alcohol consumption. The current study examined the differential associations between both first-hand consequences (resulting from one's own drinking) and second-hand consequences (resulting in victimization as a result of others' drinking) and subsequent alcohol consumption across the first year of college. METHOD: First year students (n = 253) from a large northeastern U.S. university were randomly selected to participate and surveyed at the end of the first semester of college (time 1) and during the first semester of the second year of college (time 2). RESULTS: Results showed a significant, positive relationship between first-hand consequences and subsequent weekend drinking (ß = .16, p < .05) and heavy episodic drinking (ß = .49, p < .01), after controlling for individual and friend drinking. A negative association between second-hand consequences and later heavy episodic drinking was also observed (ß = -.16, p < .05). DISCUSSION AND CONCLUSIONS: The findings provided partial support for both a positive association hypothesis and a negative association hypothesis. The importance of personal alcohol consumption and peers' drinking in relation to first- and second-hand consequences are discussed.

Who Will Experience the Most Alcohol Problems in College? The Roles of Middle and High School Drinking Tendencies.

BACKGROUND: Previous work examining college drinking tendencies has identified a disproportionately small (20%), but uniquely high-risk group of students who experience nearly 50% of the reported alcohol-related consequences (i.e., the multiple repeated consequences, or MRC, group). With the goal of reducing drinking-related consequences later in college, this study sought to identify potential MRC group members in their first semester by examining: (i) early-risk subgroups based on analysis of early-risk screening constructs (e.g., age of drinking onset, middle school alcohol exposure, high school drinking, and consequences); and (ii) their association with MRC criteria early in the first semester of college. METHODS: A random sample of 2,021 first-year college student drinkers (56% female) completed a web-based drinking survey in their first semester on campus. RESULTS: Latent class analysis revealed 4 early-risk subgroups: (i) an early-onset risk group who endorsed early age of drinking onset and engaged in heavy middle and high school drinking (10%); (ii) a late-onset risk group who engaged in weekend drinking and drunkenness and experienced 6 or more unique consequences as seniors in high school (32%); (iii) an early-onset limited risk group who only endorsed early age of onset and middle school drinking (3%); and (iv) a minimal risk group who did not engage in any early-risk behaviors (55%). Members of both the early- and late-onset risk groups had significantly higher odds of MRC membership in their first semester of college (9.85 and 6.79 greater, respectively). CONCLUSIONS: Results suggest age of onset, middle and high school drinking and drunkenness, and frequency of unique consequences could be particularly useful in brief screening tools. Further, findings support early screening and prevention efforts for MRC membership prior to college matriculation.

How estimation of drinking influences alcohol-related consequences across the first year of college.

BACKGROUND: This study examined how well students estimate their overall drinker type and the relation between the accuracy of this estimation with alcohol-related consequences. The study also explored the association between psychosocial alcohol variables and underestimation or overestimation of drinker type. METHODS: College students (n = 1,895) completed questionnaires at baseline (precollege matriculation) assessing self-reported drinker types (SI), protective and risky drinking behaviors, drinking expectancies, attitudes, and norms. Postbaseline assessment occurred during the fall semester sophomore year and included the number and type of alcohol consequences experienced during the previous year. Students' SIs were coded as accurate, overestimated, or underestimated relative to their empirically derived latent class analytic drinker class. The association between drinker type accuracy and consequences and membership in the high-risk Multiple and Repeated Consequence group was assessed, as was the relationship between the psychosocial alcohol variables and accuracy. RESULTS: Eighteen percent of students underestimated and 10% overestimated their drinker type. Students who under- or overestimated their drinker type reported experiencing more consequences, even after controlling for drinking. Increases in positive alcohol expectancies, protective and risky drinking behaviors, and descriptive peer norms were positively associated with underestimation of drinker type. Only protective and risky drinking behaviors were associated with overestimation. CONCLUSIONS: This study underscores the importance of accurate estimation of drinker type and the risk of experiencing alcohol consequences. Future research and intervention strategies are discussed.

Skin self-examination education for early detection of melanoma: a randomized controlled trial of Internet, workbook, and in-person interventions.

BACKGROUND: Early detection of melanoma improves survival. Since many melanoma patients and their spouses seek the care of a physician after discovering their melanoma, an ongoing study will determine the efficacy of teaching at-risk melanoma patients and their skin check partner how to conduct skin self-examinations (SSEs). Internet-based health behavior interventions have proven efficacious in creating behavior change in patients to better prevent, detect, or cope with their health issues. The efficacy of electronic interactive SSE educational intervention provided on a tablet device has not previously been determined. OBJECTIVE: The electronic interactive educational intervention was created to develop a scalable, effective intervention to enhance performance and accuracy of SSE among those at-risk to develop melanoma. The intervention in the office was conducted using one of the following three methods: (1) in-person through a facilitator, (2) with a paper workbook, or (3) with a tablet device used in the clinical office. Differences related to method of delivery were elucidated by having the melanoma patient and their skin check partner provide a self-report of their confidence in performing SSE and take a knowledge-based test immediately after receiving the intervention. METHODS: The three interventions used 9 of the 26 behavioral change techniques defined by Abraham and Michie to promote planning of monthly SSE, encourage performing SSE, and reinforce self-efficacy by praising correct responses to knowledge-based decision making and offering helpful suggestions to improve performance. In creating the electronic interactive SSE educational intervention, the educational content was taken directly from both the scripted in-person presentation delivered with Microsoft PowerPoint by a trained facilitator and the paper workbook training arms of the study. Enrollment totaled 500 pairs (melanoma patient and their SSE partner) with randomization of 165 pairs to the in-person, 165 pairs to the workbook, and 70 pairs to electronic interactive SSE educational intervention. RESULTS: The demographic survey data showed no significant mean differences between groups in age, education, or income. The tablet usability survey given to the first 30 tablet pairs found that, overall, participants found the electronic interactive intervention easy to use and that the video of the doctor-patient-partner dialogue accompanying the dermatologist's examination was particularly helpful in understanding what they were asked to do for the study. The interactive group proved to be just as good as the workbook group in self-confidence of scoring moles, and just as good as both the workbook and the in-person intervention groups in self-confidence of monitoring their moles. While the in-person intervention performed significantly better on a skill-based quiz, the electronic interactive group performed significantly better than the workbook group. The electronic interactive and in-person interventions were more efficient (30 minutes), while the workbook took longer (45 minutes). CONCLUSIONS: This study suggests that an electronic interactive intervention can deliver skills training comparable to other training methods, and the experience can be accommodated during the customary outpatient office visit with the physician. Further testing of the electronic interactive intervention's role in the anxiety of the pair and pair-discovered melanomas upon self-screening will elucidate the impact of these tools on outcomes in at-risk patient populations. TRIAL REGISTRATION: ClinicalTrials.gov NCT01013844; http://clinicaltrials.gov/show/NCT01013844 (Archived by WebCite at http://www.webcitation.org/6LvGGSTKK).

Optimizing timing and dosage: does parent type moderate the effects of variations of a parent-based intervention to reduce college student drinking?

Research on parent-based interventions (PBIs) to reduce college student drinking has explored the optimal timing of delivery and dosage. The present study extended this work by examining the effectiveness of three different PBI conditions on student drinking outcomes as a function of parenting types and students' pre-college drinking patterns. Four hypotheses were evaluated (early intervention, increased dosage, invariant, and treatment matching risk). A random sample of 1,900 college students and their parents was randomized to four conditions: (1) pre-college matriculation, (2) pre-college matriculation plus booster, (3) post-college matriculation, or (4) control, and was assessed at baseline (summer prior to college) and 5-month follow-up. Baseline parent type was assessed using latent profile analysis (positive, pro-alcohol, positive, anti-alcohol, negative mother, and negative father). Student drinking patterns were classified at baseline and follow-up and included: non-drinker, weekend light drinker, weekend heavy episodic drinker, and heavy drinker. Consistent with the treatment matching risk hypothesis, results indicated parent type moderated the effects of intervention condition such that receiving the intervention prior to college was associated with lower likelihood of being in a higher-risk drinking pattern at follow-up for students with positive, anti-alcohol, or negative father parent types. The findings are discussed with respect to optimal delivery and dosage of parent-based interventions for college student drinking.

Hurting, helping, or neutral? The effects of parental permissiveness toward adolescent drinking on college student alcohol use and problems.

To enhance prevention efforts to reduce college drinking, parents have been identified as an important source of influence that can be modified with brief interventions. Research suggests parental permissiveness toward drinking in adolescence is positively related to college student drinking, though existing studies have not comprehensively accounted for potential confounders (e.g., parental drinking). The present study used propensity modeling to estimate the effects of pre-college parental permissiveness on college student drinking and consequences while accounting for an inclusive range of confounders. A random sample of 1,518 incoming students at a large university completed baseline measures of parental permissiveness and a list of confounders (e.g., parental drinking, family history). At follow-up 15 months later, participants reported on their drinking and alcohol-related consequences. To control for potential confounders, individuals were weighted based on their propensity scores to obtain less biased estimates of the effects of parental permissiveness on drinking and consequences. Analyses revealed parental permissiveness was consistently and positively associated with college drinking and consequences when the confounders were not accounted for, but these effects were attenuated after weighting. Parents' allowance of drinking was not related to college drinking or consequences after weighting. Students' perceived parental limits for consumption were related to drinking and consequences in the weighted models. Prevention efforts may benefit from targeting parents' communication of acceptable limits for alcohol consumption.

Combining alcohol and energy drinks: An examination of psychosocial constructs and alcohol outcomes among college students using a longitudinal design.

Combining alcohol and energy drinks (e.g., Red Bull and vodka) is a significant problem on college campuses. To date, few studies have examined psychosocial constructs specific to alcohol-energy drink cocktail (AmED) consumption that could be amenable to change via prevention efforts targeting this population. The aim of the current study was to examine differences in AmED-specific attitudes, beliefs, normative perceptions among students who report AmED use compared to college student drinkers who consume alcohol only. In addition, these two groups were compared on their intentions to consume AmEDs, actual AmED use, and other drinking outcomes using a longitudinal design. Participants (N = 386, 59% female) completed a web-based survey in the spring of their first year of college and fall of their second year assessing alcohol-energy drink cocktail use, psychosocial decision-making constructs, heavy drinking, and alcohol-related consequences. Findings revealed that combiners of alcohol and energy drinks had more positive attitudes and beliefs about AmED use, higher perceived peer norms, and stronger intentions toward future use. Accordingly, at Time 2, this group reported significantly higher AmED use, along with high-risk drinking and related consequences. The findings reinforce that AmED use is associated with risky drinking practices, and suggest potential targets for change for future prevention efforts.

Examination of Brief Parent-Based Interventions to Reduce Drinking Outcomes on a Nationally Representative Sample of Teenagers.

PURPOSE: Examine brief parent interventions (PBIs) on a nationally representative sample of teenagers (ages 15-18 years) to change drinking, teens declining (i.e., saying no) to ride with impaired drivers, and increase parent communication about alcohol. METHODS: Parent-teen dyads (N = 1,176) recruited from a web panel completed online surveys at baseline (T1), 30 days (T2), 6 months (T3), and 12 months (T4) post baseline (Psex: 54% female; Tsex: 49% female; Tage: M = 16.33, SD = 1.09; 76% White, 27% Hispanic). Dyads were randomly assigned to: Active Control (n = 390, 33.1%), Surgeon General (SG; n = 393, 33.4%), or Mothers Against Drunk Driving PBI (MADD; n = 393, 33.4%). Aim 1 was an intent-to-treat analysis of the efficacy comparing the Active Control, SG, and MADD conditions on typical weekend drinking and declining riding with an impaired driver from T1 to T4. Aim 2 examined differences in parent communication at T2 by different levels of engagement. Aim 3 examined differences in efficacy comparing the SG and MADD engagement subgroups at T4. Aims were evaluated by comparing means using Tukey's test to reduce experiment-wise error. RESULTS: Aim 1 revealed no differences in drinking, but participants in the SG and MADD conditions were able to maintain increases in declining riding with impaired drivers. Aim 2 revealed highly engaged participants reported higher parent communication than moderate and low participants. Aim 3 revealed some highly engaged participants reported less drinking and more declining riding with impaired drivers. DISCUSSION: PBIs may be successful in helping teens decline rides with impaired drivers. Highly engaged parents reported more positive program outcomes than moderate and low engaged parents.

A Dual-Process Decision-Making Model Examining the Longitudinal Associations Between Alcohol-Induced Blackouts and Alcohol Use Disorder Risk Among College Student Drinkers.

OBJECTIVE: The purpose of this study was to use a dual-process decision-making model to examine the longitudinal associations between alcohol-induced blackouts (blackouts) and alcohol use disorder (AUD) risk symptoms among college student drinkers. METHOD: Undergraduate drinkers (N = 2,024; 56% female; 87% White; 5% Hispanic) at a large northeastern university completed online surveys each semester during their first (Time [T] 1, T2), second (T3, T4), third (T5, T6), and fourth (T7, T8) years of college (87% retention across the study). Path analyses were examined testing the longitudinal associations between T1 willingness to experience a blackout, T1 intentions to avoid a blackout, T2-T8 drinking, T2-T8 blackouts, and T8 AUD risk symptoms. Hypotheses 1 and 2 tested the associations between T1 willingness, T1 intentions, T2-T8 drinking, and T2-T8 blackouts. Hypothesis 3 tested the associations between T2-T8 drinking, T2-T8 blackouts, and T8 AUD risk symptoms. RESULTS: Students experienced an average of 8 (SD = 8) blackouts during college. Approximately 1,514 (88.8%) participants reported experiencing 1 of 8 AUD risk symptoms. T1 willingness was positively associated with T2-T8 blackouts. T2-T8 drinking and T2-T8 blackouts were positively associated with T8 AUD risk symptoms. T1 willingness significantly indirectly affected T8 AUD risk symptoms through its association with T2-T8 blackouts. CONCLUSIONS: Results estimated that, on average, college student drinkers experienced eight blackouts across 4 years of college, and 88% of participants reported experiencing at least one symptom of AUD in the last semester of college. Willingness to experience a blackout influenced students' AUD risk symptoms through the number of blackouts they experienced throughout college.

Transdermal alcohol concentration features predict alcohol-induced blackouts in college students.

BACKGROUND: Alcohol-induced blackouts (AIBs) are common in college students. Individuals with AIBs also experience acute and chronic alcohol-related consequences. Research suggests that how students drink is an important predictor of AIBs. We used transdermal alcohol concentration (TAC) sensors to measure biomarkers of increasing alcohol intoxication (rise rate, peak, and rise duration) in a sample of college students. We hypothesized that the TAC biomarkers would be positively associated with AIBs. METHODS: Students were eligible to participate if they were aged 18-22 years, in their second or third year of college, reported drinking 4+ drinks on a typical Friday or Saturday, experienced ≥1 AIB in the past semester, owned an iPhone, and were willing to wear a sensor for 3 days each weekend. Students (N = 79, 55.7% female, 86.1% White, Mage = 20.1) wore TAC sensors and completed daily diaries over four consecutive weekends (89.9% completion rate). AIBs were assessed using the Alcohol-Induced Blackout Measure-2. Logistic multilevel models were conducted to test for main effects. RESULTS: Days with faster TAC rise rates (OR = 2.69, 95% CI: 1.56, 5.90), higher peak TACs (OR = 2.93, 95% CI: 1.64, 7.11), and longer rise TAC durations (OR = 4.16, 95% CI: 2.08, 10.62) were associated with greater odds of experiencing an AIB. CONCLUSIONS: In a sample of "risky" drinking college students, three TAC drinking features identified as being related to rising intoxication independently predicted the risk for daily AIBs. Our findings suggest that considering how an individual drinks (assessed using TAC biomarkers), rather than quantity alone, is important for assessing risk and has implications for efforts to reduce risk. Not only is speed of intoxication important for predicting AIBs, but the height of the peak intoxication and the time spent reaching the peak are important predictors, each with different implications for prevention.

Examining the relationship between alcohol-energy drink risk profiles and high-risk drinking behaviors.

BACKGROUND: The mixing of alcohol and energy drinks (AMEDs) is a trend among college students associated with higher rates of heavy episodic drinking and negative alcohol-related consequences. The goals of this study were to take a person-centered approach to identify distinct risk profiles of college students based on AMED-specific constructs (expectancies, attitudes, and norms) and examine longitudinal associations between AMED use, drinking, and consequences. METHODS: A random sample of incoming freshmen (n = 387, 59% female) completed measures of AMED use, AMED-specific expectancies, attitudes, and normative beliefs, and drinking quantity and alcohol-related consequences. Data were collected at 2 occasions: spring semester of freshmen year and fall semester of sophomore year. RESULTS: Latent profile analysis identified 4 subgroups of individuals: occasional AMED, anti-AMED, pro-AMED, and strong peer influence. Individuals in the pro-AMED group reported the most AMED use, drinking, and consequences. There was a unique association between profile membership and AMED use, even after controlling for drinking. CONCLUSIONS: Findings highlighted the importance of AMED-specific expectancies, attitudes, and norms. The unique association between AMED risk profiles and AMED use suggests AMED use is a distinct behavior that could be targeted by AMED-specific messages included in existing brief interventions for alcohol use.

An update of research examining college student alcohol-related consequences: new perspectives and implications for interventions.

The objective of this review is to provide an update on existing research examining alcohol-related consequences among college students with relevance for individual-based interventions. While alcohol-related consequences have been a focus of study for several decades, the literature has evolved into an increasingly nuanced understanding of individual and environmental circumstances that contribute to risk of experiencing consequences. A number of risk factors for experiencing alcohol-related consequences have been identified, including belonging to specific student subgroups (e.g., Greek organizations) or drinking during high-risk periods, such as spring break. In addition, the relationship between students' evaluations of both negative and positive consequences and their future drinking behavior has become a focus of research. The current review provides an overview of high-risk student subpopulations, high-risk windows and activities, and college students' subjective evaluations of alcohol-related consequences. Future directions for research are discussed and include determining how students' orientations toward consequences change over time, identifying predictors of membership in high-risk consequence subgroups and refining existing measures of consequences to address evolving research questions.