The Australian Parental Supply of Alcohol Longitudinal Study (APSALS)

2014-11-29 08:23:22 | BioPortfolio


Parents can positively influence their children's alcohol use. One strategy they use is to provide their children with alcohol, believing it is the best way to teach their children how to drink responsibly. The impact of parental supply is not well understood and may be unintentionally harmful. This study will research the consequences of parental supply within the broader context of parent, child and peer relationships. It will help to determine how parental supply influences the different patterns of adolescent alcohol consumption over time, providing essential information to help parents prevent alcohol misuse in their children. Parents can play a pivotal role in prevention of alcohol misuse, but at present we don't know exactly how.


Title: The Australian Parental Supply of Alcohol Longitudinal Study (APSALS): Can parents teach their children to drink alcohol responsibly? Or, is one drop a drop too many?

Background: The Australian Parental Supply of Alcohol Longitudinal Study (APSALS) was established to investigate the short- and long-term associations between exposure to parental alcohol provision, early adolescent alcohol initiation, subsequent alcohol use, and alcohol-related harms, controlling for a wide range of parental, child, familial, peer, and contextual covariates. The cohort commenced with 1927 parent-child dyads comprised of Australian Grade 7 school students, and a parent/guardian. Baseline, one- and two-year follow-up data have been collected, and a three-year follow-up is underway. The data collected include child, familial, parental, and peer factors addressing demographics, alcohol use and supply, parenting practices, other substance use, adolescent behaviours, and peer influences. Baseline data show that only 5.8% of the Grade 7 adolescents had initiated alcohol consumption (of a whole serve of alcohol). Thus, the cohort is ideal for prospectively examining predictors of initiation and progression of alcohol use, which increases markedly through adolescence. Results to date have highlighted the importance of distinguishing between sipping and drinking of full serves of alcohol in the measurement of adolescent alcohol use as these represent distinct behaviours which occur in different environments.

Aims: The aims of this study are to determine if:

1. Parental supply is associated with the progression (acceleration/deceleration) in adolescent drinking over time;

2. The immediate and broader contextual factors mediate or moderate the relationship between parental supply and progression in adolescent drinking over time.

Design: A longitudinal study across three states in Australia (New South Wales, Tasmania, and Western Australia).

Recruitment: Catholic, Independent and Government school in NSW, Tasmania and Western Australia.

Data analysis: Logistic and binomial regression, and multi-level modelling will be used, and latent growth curve modelling (LGCM) within the framework of structural equations modelling (SEM). Moderating and mediating variables, both time variant (e.g., association with alcohol using peers) and time-invariant (e.g. gender) will be modelled. Outcome variables will be modelled using appropriate parametric distributions - Poisson distributions for count data outcomes and binomial distributions for categorical data outcomes. All analyses will be conducted in MPlus v5.2 or Stata. As recommended by Graham imputation of missing data will be done.

Sample size calculations: Due to the flexibility of the modelling approach taken (i.e., the number of parameters allowed to vary), there are a number of different scenarios that can be tested to determine an adequate sample size. The primary interest is in differences in drinking over time between groups who were supplied or not supplied alcohol. Thus, regression analysis will address drinking on a dummy-coded "parental supply" variable. It is hypothesised that parental supply of alcohol would alter the trajectory of harmful drinking by a regression coefficient of ±0.2. This regression coefficient is equivalent to a medium effect size difference between groups, a result which is not unexpected given past research. It was assumed that attrition would result in around 20% missing data on each subsequent measurement occasion. Based on simulation studies, and factoring in potential mediators and moderators, 600 children are required at a minimum. However, as small cell sizes for some associations may affect power, a final sample of ~1800 children and parents has been recruited.

Study Design

Observational Model: Cohort, Time Perspective: Prospective


Alcohol Abuse


University of New South Wales
New South Wales


Active, not recruiting


The University of New South Wales

Results (where available)

View Results


Published on BioPortfolio: 2014-11-29T08:23:22-0500

Clinical Trials [1041 Associated Clinical Trials listed on BioPortfolio]

Exploration of the Potential Role of Brain Magnetic Stimulation in Preventing Relapse to Alcohol Abuse

dTMS intervention to reduce recurrent alcohol abuse among alcohol users who are abstinent for at least two weeks.

Treatment for Teens With Alcohol Abuse and Depression

The investigators will recruit adolescents with alcohol abuse and clinically significant depression. All participants will receive 12 weeks of an evidence-based treatment for alcohol abuse...

Mindfulness for Alcohol Abusing Offenders

Over half of state and federal prisoners meet clinical criteria for alcohol abuse or dependence, and after release from prison, over three-quarters of offenders are re-arrested within five...

Bone Density in Patients With Schizophrenia

People with chronic mental disorder such as schizophrenia and alcohol abuse are high risk groups for developing osteoporosis. To evaluate the prevalence of bone mineral density in men pat...

A Randomized, Double-Blind, Placebo-Controlled Add-On Trial Quetiapine in Patients With Bipolar and Alcohol Abuse/Dependence

The abuse of alcohol is especially common in people with bipolar disorder. However, very little is known about the pharmacotherapy of people with both bipolar disorder and alcohol abuse/d...

PubMed Articles [2611 Associated PubMed Articles listed on BioPortfolio]

Heterogeneous Dose-Response Analyses of Alcohol Abuse and Dependence.

Survey-based estimates of the prevalence of alcohol abuse, dependence and disorders in the US rely upon self-reports of drinking patterns (e.g., binge drinking), social problems (e.g., trouble at work...

Prenatal alcohol exposure and offspring alcohol use and misuse at 22 years of age: A prospective longitudinal study.

Studies have shown that prenatal alcohol exposure (PAE) is related to drinking problems during adulthood, but the level of prenatal exposure associated with young adults' quantity and frequency of alc...

Addiction to alcohol and drugs among the population of transcarpathian region.

Introduction: Alcohol and drugs are a factor that significantly affects the health of the population. The consequences of alcohol abuse and drug addiction are not only a medical, but also socio-econom...

Drinking in the morning versus evening: Time-dependent differential effects of acute alcohol administration on the behavior of zebrafish.

Alcohol (ethanol) abuse remains to be a leading cause of medical, including mental, problems throughout the world. Whether alcohol consumption leads to chronic use, and subsequent alcohol dependency a...

The relationship between alcohol abuse and suicide risk according to smoking status: A cross-sectional study.

Considering the rising suicide risk rate, we investigated the associations between alcohol abuse, smoking, and suicide risk.

Medical and Biotech [MESH] Definitions

Component of the NATIONAL INSTITUTES OF HEALTH. It conducts research focused on improving the treatment and prevention of alcoholism and alcohol-related problems to reduce the health, social, and economic consequences of this disease. NIAAA, NIMH, and NIDA were created as coequal institutes within the Alcohol, Drug Abuse and Mental Health Administration in 1974. It was established within the NATIONAL INSTITUTES OF HEALTH in 1992.

Disorders stemming from the misuse and abuse of alcohol.

A condition where seizures occur in association with ethanol abuse (ALCOHOLISM) without other identifiable causes. Seizures usually occur within the first 6-48 hours after the cessation of alcohol intake, but may occur during periods of alcohol intoxication. Single generalized tonic-clonic motor seizures are the most common subtype, however, STATUS EPILEPTICUS may occur. (Adams et al., Principles of Neurology, 6th ed, p1174)

Component of the NATIONAL INSTITUTES OF HEALTH. It supports a comprehensive research portfolio that focuses on the biological, social, behavioral and neuroscientific bases of drug abuse on the body and brain as well as its causes, prevention, and treatment. NIDA, NIAAA, and NIMH were created as coequal institutes within the Alcohol, Drug Abuse and Mental Health Administration in 1974. It was established within the NATIONAL INSTITUTES OF HEALTH in 1992.

An agency of the PUBLIC HEALTH SERVICE concerned with the overall planning, promoting, and administering of programs pertaining to substance abuse and mental health. It is commonly referred to by the acronym SAMHSA. On 1 October 1992, the United States Alcohol, Drug Abuse, and Mental Health Administration (ADAMHA) became SAMHSA.

More From BioPortfolio on "The Australian Parental Supply of Alcohol Longitudinal Study (APSALS)"

Quick Search


Relevant Topic

Pediatrics is the general medicine of childhood. Because of the developmental processes (psychological and physical) of childhood, the involvement of parents, and the social management of conditions at home and at school, pediatrics is a specialty. With ...

Searches Linking to this Trial