%0 Journal Article %J Addiction %D 2014 %T Adolescent predictors and environmental correlates of young adult alcohol use problems. %A Toumbourou, John W %A Evans-Whipp, Tracy J %A Smith, Rachel %A Hemphill, Sheryl A %A Herrenkohl, Todd I %A Catalano, Richard F %K Adolescent %K Adolescent Behavior %K Alcohol Drinking %K Alcohol-Related Disorders %K Cohort Studies %K Female %K Humans %K Longitudinal Studies %K Male %K Risk Factors %K Social Environment %K Street Drugs %K Substance-Related Disorders %K Victoria %K Workplace %K Young Adult %X

AIMS: To examine the rates of young adult alcohol and drug use and alcohol problems, adolescent predictors of young adult alcohol problems and correlations with young adult social, work and recreational environments.

DESIGN: Adolescents were followed longitudinally into young adulthood. Predictors were measured in grade 9 (average age 15), and environmental correlates and outcomes in young adulthood (average age 21).

SETTING: Students recruited in Victoria, Australia in 2002, were resurveyed in 2010/11.

PARTICIPANTS: Analytical n=2309, 80% retention.

MEASUREMENTS: Adolescent self-report predictors included past-month alcohol use. Young adults completed the Alcohol Use Disorders Identification Test (AUDIT) together with reports of environmental influences.

FINDINGS: Comparisons to United States national school graduate samples revealed higher rates of alcohol, tobacco and illicit drug use (other than cannabis) in Victoria. For example, rates of past month use at age 21-22 were: alcohol 69.3% US versus 84.9%, 95% confidence interval (CI) 81.3-88.6% Victoria; illicit drugs (other than cannabis) 8.8 versus 12.7%, CI 9.7-15.7%. AUDIT alcohol problems (scored 8+) were identified for 41.2%, CI 38.8-43.6% of young adults in Victoria. The likelihood of young adult alcohol problems was higher for frequent adolescent alcohol users and those exposed to environments characterized by high alcohol use and problems in young adulthood.

CONCLUSIONS: High rates of alcohol problems are evident in more than two in five Australian young adults, and these problems appear to be influenced both by earlier patterns of adolescent alcohol use and by young adult social, work and recreational environments.

%B Addiction %V 109 %P 417-24 %8 2014 Mar %G eng %N 3 %R 10.1111/add.12401 %0 Journal Article %J Accid Anal Prev %D 2013 %T Adolescent exposure to drink driving as a predictor of young adults' drink driving. %A Evans-Whipp, Tracy J %A Plenty, Stephanie M %A Toumbourou, John W %A Olsson, Craig %A Rowland, Bosco %A Hemphill, Sheryl A %K Adolescent %K Alcohol Drinking %K Automobile Driving %K Child %K Dangerous Behavior %K Female %K Follow-Up Studies %K Humans %K Imitative Behavior %K Logistic Models %K Male %K Multivariate Analysis %K Risk Factors %K Self Report %K Victoria %K Young Adult %X

The purpose of this study was to investigate the influence of exposure to others' drink driving during adolescence on self-reported driving under the influence (DUI) of alcohol in young adulthood. Data were drawn from 1956 participants with a driving license enrolled in the International Youth Development Study from Victoria, Australia. During 2003 and 2004, adolescents in Grades 7, 9 and 10 (aged 12-17) completed questionnaires examining whether they had ridden in a vehicle with a driver who had been drinking, as well as other demographic, individual, peer and family risk factors for DUI. In 2010, the same participants (aged 18-24) then reported on their own DUI behaviour. 18% of young adults with a driving license reported DUI in the past 12 months. Exposure to others' drink driving during adolescence was associated with an increased likelihood of DUI as a young adult (OR=2.13, 95% CI 1.68-2.69). This association remained after accounting for the effects of other potential confounding factors from the individual, peer and family domains (OR=1.62, 95% CI 1.23-2.13). Observing the drink driving behaviours of others during adolescence may increase the likelihood of DUI as a young adult. Strategies to reduce youth exposure to drink driving are warranted.

%B Accid Anal Prev %V 51 %P 185-91 %8 2013 Mar %G eng %R 10.1016/j.aap.2012.11.016 %0 Journal Article %J Psychol Addict Behav %D 2011 %T Early age alcohol use and later alcohol problems in adolescents: Individual and peer mediators in a bi-national study. %A Mason, W A %A Toumbourou, John W %A Herrenkohl, Todd I %A Hemphill, Sheryl A %A Catalano, Richard F %A Patton, George C %K Adolescent %K Adolescent Behavior %K Age of Onset %K Alcohol Drinking %K Alcohol-Related Disorders %K Cross-Cultural Comparison %K Female %K Humans %K Impulsive Behavior %K Longitudinal Studies %K Male %K Models, Statistical %K Peer Group %K Risk Factors %K Risk-Taking %K Social Control, Informal %K Students %K Substance-Related Disorders %K Victoria %K Washington %K Young Adult %X

This paper examines whether there is cross-national similarity in the longitudinal relationship between early age alcohol use and adolescent alcohol problems. Potential mechanisms underlying this relationship also are examined, testing adolescent alcohol use, low self-regulation, and peer deviance as possible mediators. Students (N = 1,945) participating in the International Youth Development Study, a longitudinal panel survey study, responded to questions on alcohol use and influencing factors, and were followed annually over a 3-year period from 2002 to 2004 (98% retention rate). State-representative, community student samples were recruited in grade 7 in Washington State, United States (US, n = 961, 78% of those eligible; Mage = 13.09, SD = .44) and Victoria, Australia (n = 984, 76% of those eligible; Mage = 12.93, SD = .41). Analyses were conducted using multiple-group structural equation modeling. In both states, early age alcohol use (age 13) had a small but statistically significant association with subsequent alcohol problems (age 15). Overall, there was little evidence for mediation of early alcohol effects. Low self-regulation prospectively predicted peer deviance, alcohol use, and alcohol problems in both states. Peer deviance was more positively related to alcohol use and low self-regulation among students in Victoria compared to students in Washington State. The small but persistent association of early age alcohol use with alcohol problems across both samples is consistent with efforts to delay alcohol initiation to help prevent problematic alcohol use. Self-regulation was an important influence, supporting the need to further investigate the developmental contribution of neurobehavioral disinhibition.

%B Psychol Addict Behav %V 25 %P 625-33 %8 2011 Dec %G eng %N 4 %R 10.1037/a0023320 %0 Journal Article %J Pediatrics %D 2010 %T Pubertal stage and the prevalence of violence and social/relational aggression. %A Hemphill, Sheryl A %A Kotevski, Aneta %A Herrenkohl, Todd I %A Toumbourou, John W %A Carlin, John B %A Catalano, Richard F %A Patton, George C %K Adolescent %K Aggression %K Antisocial Personality Disorder %K Child %K Depressive Disorder %K Female %K Humans %K Interpersonal Relations %K Male %K Prevalence %K Puberty %K Risk Factors %K Spouse Abuse %K Victoria %K Violence %K Washington %K Young Adult %X

OBJECTIVE: We examined associations between pubertal stage and violent adolescent behavior and social/relational aggression.

METHODS: The International Youth Development Study comprises statewide representative student samples in grades 5, 7, and 9 (N = 5769) in Washington State and Victoria, Australia, drawn as a 2-stage cluster sample in each state. We used a school-administered, self-report student survey to measure previous-year violent behavior (ie, attacking or beating up another person) and social/relational aggression (excluding peers from the group, threatening to spread lies or rumors), as well as risk and protective factors and pubertal development. Cross-sectional data were analyzed.

RESULTS: Compared with early puberty, the odds of violent behavior were approximately threefold higher in midpuberty (odds ratio [OR]: 2.87 [95% confidence interval (CI): 1.81-4.55]) and late puberty (OR: 3.79 [95% CI: 2.25-6.39]) after adjustment for demographic factors. For social/relational aggression, there were weaker overall associations after adjustment, but these associations included an interaction between pubertal stage and age, and stronger associations with pubertal stage at younger age were shown (P = .003; midpuberty OR: 1.78 [95% CI: 1.20-2.63]; late puberty OR: 3.00 [95% CI: 1.95-4.63]). Associations between pubertal stage and violent behavior and social/relational aggression remained after the inclusion of social contextual mediators in the analyses.

CONCLUSIONS: Pubertal stage was associated with higher rates of violent behavior and social/relational aggression, with the latter association seen only at younger ages. Puberty is an important phase at which to implement prevention programs to reduce adolescent violent and antisocial behaviors.

%B Pediatrics %V 126 %P e298-305 %8 2010 Aug %G eng %N 2 %R 10.1542/peds.2009-0574