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We report the results of a quasi-experimental evaluation of a mystery shopper intervention in Zacatecas and Guadalupe, Mexico. Underage youth attempted to purchase beer at 50 Modelorama stores and 32 Oxxo stores (intervention groups), and at 19 comparison convenience stores in March, July, and August 2018. After each attempt, intervention store operators were informed if a sale was made. Modelorama operators also received training and were warned that repeated sales to minors could jeopardize their franchise. Average sales rates to minors were 63.8% at Modeloramas, 86.5% at Oxxo stores, and 98.2% at comparison stores. The findings suggest that mystery shopper interventions with training, feedback to store operators, and sanctions after repeated sales to underage youth may reduce sales to minors in low- and middle-income countries.

Alcohol remains readily available to youth in most countries. We examined the associations between both the on- and off-premises commercial availability of alcohol to youth and their alcohol use, heavy episodic drinking, and alcohol-related harms. We conducted the study using data from a survey of a sample of 594 students in central Mexico between 12 and 17 years of age in 2016. Both the perceived availability of alcohol and the purchasing of alcohol at an off-premises establishment were positively related to past-30-day alcohol use and heavy episodic drinking, as well as to alcohol-related harms in the past year. Consumption at on-premises establishments was also positively associated with alcohol-related harms. Preventive efforts to reduce the availability of alcohol at off- and on-premises establishments, by such strategies as mystery shopper and responsible beverage service programs, are imperative.

This study examines effects of a randomized controlled trial for an online, family-based prevention program for older teens, Smart Choices 4 Teens, on alcohol use and related outcomes. Families (N = 411; teen age M = 16.4, SD = 0.5) were randomly assigned to the intervention or control condition in 2014-2015. Both intent to treat (ITT) and dosage models were conducted. ITT models: At the 6-month follow-up, teens in the experimental condition reported fewer friends who had been drunk, and parents in the experimental group reported more communication about social host laws. At the 12-month follow-up, parents in the experimental condition reported consuming fewer drinks than parents in the control group. Dosage models: At the 6-month follow-up, dosage was inversely related to teen drinking in the past 6 months or 30 days, frequency of teen drinking during the past 6 months and 30 days, drinks consumed by teens over the past 6 months, teen drunkenness and binge-drinking during the past 30 days, teen reported communication about safe drinking and positively related to parent and teen reported communication about social host laws. At 12 months, dosage was inversely related to teen alcohol use, frequency of teen drinking over the past 30 days, drinks consumed by teens over the past 6 months and 30 days, and teen drunkenness over the past 6 months. Results suggest that Smart Choices 4 Teens is beneficial for families. Dissemination and implementation strategies that motivate completion of program content will improve outcomes related to older teens' alcohol use. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Background: Mechanisms underlying associations between early drinking and problems are largely unknown., Objectives: We investigated (a) associations between early age of first intoxication (≤15 years) and past year drinking in different contexts and (b) whether early age of first intoxication is differentially associated with problems in these contexts., Methods: We used survey data collected in 2013-2014 from 405 past-year adolescent drinkers in 24 midsized California cities. Data included demographics; drinking behaviors; age of first intoxication; frequency of being at and drinking at restaurants, bars/nightclubs, outdoor places, and home; and problems. We used multilevel logistic and negative binomial models to account for the clustering of adolescents within cities. Probabilities were corrected to maintain family-wise error rates., Results: Early age of first intoxication was associated with a 120% increase in the odds of drinking at outdoor settings (OR = 2.20, p c < .05). Early age of first intoxication was associated with increased numbers of problems related to drinking in restaurants (IRR = 5.72, p c < .001), outdoor settings (IRR = 3.40, p c < .001), and homes (IRR = 2.84, p c < .001). Later intoxication (≥16 years) was not significantly associated with increased drinking or problems in any of these contexts., Conclusions: Results suggest that underage drinkers who report early intoxication are more likely to drink at outdoor settings, but not other contexts. However, they may differentially experience drinking problems across contexts. To target youths who have experienced intoxication at an early age and to reduce problems, prevention interventions should focus on outdoor settings.

Introduction and Aims: Clerks and servers at alcohol establishments often fail to verify age. Using mystery shoppers to provide performance feedback is one approach to improving age verification. Few controlled studies have evaluated mystery shop interventions. This paper reports on a cluster randomised cross-over trial of a mystery shop intervention in 16 communities in four US states., Design and Methods: The intervention comprised monthly mystery shops after which clerks and servers received immediate feedback to reinforce age verification. Managers received monthly reports. Communities in each state were matched into pairs and, following a 3-month baseline, were randomly assigned within each pair to receive the intervention beginning after the fourth (Early Intervention) or the tenth (Delayed Intervention) mystery shop. On average, 17 (range = 14-20) randomly selected on-premises and 18 (range = 11-23) off-premises outlets participated in each community (N = 557)., Results: Fixed effects multi-level logistic regressions indicated that the intervention led to a two-fold increase in the odds of age verification, odds ratio (OR) = 2.05; P < 0.001; 95% confidence interval (CI) 1.76, 2.39. Overall, ID-checking increased from an average of 80% pre-intervention to 94-96% by the end of the program. Significant effects were found for on-premises, OR = 1.79; P < 0.001; 95% CI 1.43, 2.24, and off-premises establishments, OR = 2.29; P < 0.001; 95% CI 1.86, 2.82., Discussion and Conclusions: Mystery shop interventions can increase age verification for alcohol purchases and may be an effective supplement to compliance checks and responsible beverage service programs., (© 2018 Australasian Professional Society on Alcohol and other Drugs.)

We investigated social and situational characteristics associated with adolescents' drinking at party and non-party events and whether these associations vary by party location (homes versus other locations). Ecological momentary assessment data were obtained over two weekends from 149 adolescents in California (46% female, M age=16.4years), using smartphone surveys administered early and late in the evening and the following morning. We assessed whether, where, and with whom adolescents drank alcohol. Social contexts with more people (RRR=1.05, p≤0.005) and with mixed gender composition (RRR=3.15, p≤0.05) were positively associated with increased risks of alcohol use at parties, but not at non-party events. Conversely, social contexts with friends were positively associated with alcohol use at non-party events (RRR=4.32, p≤0.005), but not at parties. Perceived access to alcohol was associated with increased risks for alcohol use at both party and non-party events, but the association was stronger for alcohol use at parties than non-parties (RRR=1.85, p<0.005 versus 4.01, p≤0.005). Additional analyses showed that contexts with mixed gender composition were positively associated with alcohol use at parties not in homes (RRR=11.29, p≤0.05), and perceptions of getting caught by parents or police were negatively associated with non-party alcohol use in homes (RRR=0.57, p≤0.005). This study identified social-ecological contexts of underage drinking parties, which are high risk settings for heavier drinking and other alcohol-related problems. Findings can inform context-based interventions to target these high-risk settings, whether at homes or other locations., (Copyright © 2017 Elsevier Ltd. All rights reserved.)

Objectives: To evaluate combined individual- and community-level interventions to reduce underage drinking by American Indian/Alaska Native (AI/AN) youths on rural California Indian reservations., Methods: Individual-level interventions included brief motivational interviewing and psychoeducation for Tribal youths. Community-level interventions included community mobilization and awareness activities, as well as restricting alcohol sales to minors. To test effects, we compared 7 waves of California Healthy Kids Survey data (2002-2015) for 9th- and 11th-grade AI/AN and non-AI/AN students in intervention area schools with California AI/AN students outside the intervention area (n = 617, n = 33 469, and n = 976, respectively)., Results: Pre- to postintervention mean past 30-day drinking frequency declined among current drinkers in the intervention group (8.4-6.3 days) relative to comparison groups. Similarly, heavy episodic drinking frequency among current drinkers declined in the intervention group (7.0-4.8 days) versus the comparison groups., Conclusions: This study documented significant, sustained past 30-day drinking or heavy episodic drinking frequency reductions among AI/AN 9th- and 11th-grade current drinkers in rural California Indian reservation communities exposed to multilevel interventions. Public Health Implications. Multilevel community-partnered interventions can effectively reduce underage alcohol use in this population.

Objective: We investigated how associations between social and situational characteristics (number of people, adult supervision, group gender composition, group age composition, ease of alcohol access, and weekend) and underage drinking are moderated by the specific locations in which drinking occurs., Method: Using a case-crossover design and retrospective surveys, a sample of 385 adolescents (mean age = 16.5 years; 47.3% female) from 24 mid-size California cities reported the last time they drank alcohol in a specific location (restaurant, outdoors, home) and the last time they were at the same type of location without drinking, as well as characteristics of each drinking and nondrinking event (N = 1,096 events)., Results: Results of multilevel regression models indicated that perceived ease of alcohol access was associated with drinking across all locations (adjusted odds ratios [aORs] = 2.11-2.75, all p < .01). Weekend (vs. weekday) increased the odds of drinking outdoors (aOR = 3.75, p < .001) and in the home (aOR = 4.37, p < .001), as did a lack of adult supervision (aOR = 1.70, p < .05 for outdoors; aOR = 1.64, p < .01 for home). Larger groups (aOR = 1.06, p < .001) and being with older people (aOR = 2.28, p < .001) increased the odds of drinking in the home only. Significant cross-level interaction effects between location and group size (aOR = 0.96; p < .001), group gender composition (aOR = 0.78, p < .05), group age composition (aOR = 0.70, p < .01), ease of alcohol access (aOR = 0.88, p < .05), and weekend (aOR = 0.66, p < .05) suggested that these predictors were less significant in outdoor locations compared with the home., Conclusions: Locations moderate the social and situational characteristics of events and are important for underage drinking. Results can inform targeted prevention efforts., Competing Interests: Joel W. Grube has been supported within the past three years by funding from the alcohol industry to evaluate industry-sponsored programs to reduce alcohol sales to minors and other alcohol-related harms. The other authors declare that they have no conflict of interest.

Background: To identify drinking contexts toward which prevention efforts should be directed, associations of context-specific alcohol use (past-year frequency of drinking and heavier drinking in the context) with a range of alcohol-related problems were examined in a population sample of adolescents., Methods: A sample of youths (ages 15 to 18) residing in 50 medium-to-large California cities (n = 473 drinkers) was obtained. Respondents provided information about 7 past-year alcohol-related problems in 3 domains (physiological consequences, alcohol-related violence, and conflict/trouble) and the number of times in the past year they used 6 distinct drinking contexts (parties, restaurants/bars, parking lots/street corners, beaches/parks, respondent's home without parents, and someone else's home without parents). Context-specific dose-response model was estimated for each context using censored Tobit models with heteroskedasticity corrections., Results: Physiological problems were associated with more frequent drinking in 5 of 6 contexts. Heavier drinking in restaurants/bars/nightclubs (b = 0.22, SE = 0.10) and someone else's home without parents (b = 0.14, SE = 0.06) was associated with greater risk of violence. Conflict/trouble was associated with more frequent drinking in parking lots/street corners, declining at higher levels of drinking., Conclusions: Certain drinking contexts are related to problems among youths, some because they are associated with frequent alcohol consumption and others because they are associated with heavier drinking. Identifying which drinking contexts are related to specific alcohol-related problems and why is an essential component of developing effective preventive interventions., (Copyright © 2015 by the Research Society on Alcoholism.)

This study examined whether differences in the perceived neighborhood and school environments account for differences in drinking behavior among Native American and White youths. Findings indicate that being Native American was indirectly related to drinking through perceived school and community variables. Higher drinking rates among Native Americans appear to be accounted for by lower school involvement, weaker neighborhood antidrug norms, greater neighborhood disorganization, and lower levels of perceived police enforcement. Results of this study highlight the potential importance of perceived school and neighborhood environments in drinking behavior among youths.

Previous research suggests that the context in which drinking occurs contribute to specific alcohol-related problems. In the current study we assessed how often adolescents attended different contexts in which they could drink, how often they drank in those contexts, and whether drinking patterns and parental monitoring were related to alcohol use in those contexts. We collected survey data from 1,217 adolescents 15-18 years of age in 24 midsized California cities. Measures included past-year frequencies of attending and drinking in restaurants, bars/nightclubs, and outdoor places, typical hours spent at home (i.e., own home or someone else's home), perceptions of parental control and disclosure to parents about free time activities, and demographics. Multilevel zero-inflated negative binomial models were used to assess associations between drinking patterns, parental control, and disclosure and frequency of attending and drinking in specific contexts. There were large variations in attending contexts in which drinking could take place. More frequent drinking was related to less time spent at home, while heavier drinking was associated with more time spent at home. Parental control was related to less frequent attendance at bars/nightclubs, and disclosure to less frequent involvement in outdoor activities and spending more time at home. Among drinkers, frequencies of attendance were strongly related to frequencies of drinking in all contexts except the home. Parental control and disclosure were related to more frequent drinking at restaurants and exposure to bars/nightclubs and drinking at outdoor activities. Parental monitoring may reduce exposure to risks by shifting adolescent contexts for alcohol use.

This experimental study assessed whether alcohol television storylines impact youth drinking attitudes and intentions and whether corrective epilogues can potentially moderate this impact. Television episodes were professionally produced to depict heavy drinking leading to either positive or negative consequences. The pro- and anti-alcohol episodes were shown alone or with an epilogue where a main character discussed the deleterious effects of excessive drinking. Attitudes toward drinkers and drinking intentions were measured subsequently, along with reactions to the episode and demographic data, among participants aged 14-17 using an online study. Exposure to the pro-alcohol episode was related to more positive attitudes toward drinkers. Including an epilogue after a pro-alcohol episode was related to more negative viewers' attitudes toward drinkers and lower drinking intentions compared to a pro-alcohol episode with no epilogue. By contrast, including an epilogue after an anti-alcohol episode was unrelated to attitudes toward drinkers or drinking intentions. Viewing a single television episode with a pro-alcohol message may lead to more positive attitudes toward drinkers. The finding that a brief epilogue may reduce the impact of the pro-alcohol storyline suggests easily implemented preventive strategies to counter the adverse impact of substance use portrayals in entertainment programming. [ABSTRACT FROM AUTHOR]

Objective: This study investigated relationships between local alcohol policies, enforcement, alcohol outlet density, adult alcohol use, and underage drinking in 50 California cities. Method: Eight local alcohol policies (e.g., conditional use permit, social host ordinance, window/billboard advertising) were rated for each city based on their comprehensiveness. Local alcohol enforcement was based on grants received from the California Alcoholic Beverage Control agency for enforcement of underage drinking laws. Outlet density was based on the number of on- and off-premise outlets per roadway mile. Level of adult alcohol use was ascertained from a survey of 8,553 adults and underage drinking (frequency of past-year alcohol use and heavy drinking) from surveys of 1,312 adolescents in 2009 and 2010. Multilevel regression analyses were conducted to examine the effects of policies, enforcement, and other community-level variables on adolescent drinking, controlling for youth demographic characteristics. Mediating effects of adolescents' perceived ease of obtaining alcohol, perceived enforcement, and perceived acceptability of alcohol use also were examined. Results: None of the eight local alcohol-policy ratings were associated with adolescent drinking. Funding for underage drinking enforcement activities was inversely related to frequency of past-year alcohol use, whereas outlet density and adult drinking were positively related to both past-year alcohol use and heavy drinking. These relationships were attenuated when controlling for perceived ease of obtaining alcohol, enforcement, and acceptability of alcohol use, providing evidence for mediation. Conclusions: Adolescent alcohol use and heavy drinking appear to be influenced by enforcement of underage drinking laws, alcohol outlet density, and adult alcohol use. These community-level influences may be at least partially mediated through adolescents' perceptions of alcohol availability, acceptability of alcohol use, and perceived likelihood of getting in trouble with local police. [ABSTRACT FROM AUTHOR]

Aim This study examined how community alcohol outlet density may be associated with drinking among youths. Methods Longitudinal data were collected from 1091 adolescents (aged 14–16 at baseline) recruited from 50 zip codes in California with varying levels of alcohol outlet density and median household income. Hierarchical linear models were used to examine the associations between zip code alcohol outlet density and frequency rates of general alcohol use and excessive drinking, taking into account zip code median household income and individual-level variables (age, gender, race/ethnicity, personal income, mobility and perceived drinking by parents and peers). Findings When all other factors were controlled, higher initial levels of drinking and excessive drinking were observed among youths residing in zip codes with higher alcohol outlet densities. Growth in drinking and excessive drinking was, on average, more rapid in zip codes with lower alcohol outlet densities. The relation of zip code alcohol outlet density with drinking appeared to be mitigated by having friends with access to a car. Conclusion Alcohol outlet density may play a significant role in initiation of underage drinking during early teenage, especially when youths have limited mobility. Youth who reside in areas with low alcohol outlet density may overcome geographic constraints through social networks that increase their mobility and the ability to seek alcohol and drinking opportunities beyond the local community. [ABSTRACT FROM AUTHOR]

We investigated contexts of simultaneous use of alcohol and marijuana and the impact of simultaneous use on problems among adolescents. Ecological momentary assessment data were obtained over two weekends from 150 adolescents in California (47% female, M age=16.36years), using smartphone surveys administered early and late in the evening and again the following morning. We assessed whether, in what context, and with whom adolescents drank alcohol and used other substances over 3 evening hours. We assessed problems they experienced each evening on the following morning. Results showed that greater adult supervision in every context was associated with a 55% lower risk of simultaneous use (RRR=0.45, p≤.05). Contexts with no other underage drinkers were associated with 99% lower risk of simultaneous use (RRR=0.01, p≤.005). Each occasion of simultaneous use was related to 110% increase in the number of problems (IRR=2.10, p≤.005), with 83%, 221% and 311% greater odds of violence (OR=1.83, p≤.05), driving under the influence or riding with a drunk driver (OR=3.21, p≤.05), or being drunk (OR=4.11, p≤.005). Additional analyses showed that these problems may be attributed largely to the alcohol consumed in each context. Results demonstrate that it is essential to consider situational and social characteristics of substance use contexts to better understand adolescent simultaneous use of alcohol and drugs and problems. [ABSTRACT FROM AUTHOR]