Latent trajectory classes for alcohol-related blackouts from age 15 to 19 in ALSPAC.
Alcohol Clin Exp Res
; 39(1): 108-16, 2015 Jan.
Article
em En
| MEDLINE
| ID: mdl-25516068
ABSTRACT
BACKGROUND:
Alcohol-related blackouts (ARBs) are reported by ~50% of drinkers. While much is known about the prevalence of ARBs in young adults and their cross-sectional correlates, there are few prospective studies regarding their trajectories over time during mid-adolescence. This paper reports latent trajectory classes of ARBs between age 15 and 19, along with predictors of those patterns.METHODS:
Latent class growth analysis (LCGA) was used to evaluate the pattern of occurrence of ARBs across 4 time points for 1,402 drinking adolescents from the Avon Longitudinal Study of Parents and Children (ALSPAC). Multinomial regression analyses evaluated age-15 demography, substance-related items, externalizing characteristics, and estimated peer substance use as predictors of latent class membership.RESULTS:
ARBs were reported at age 15 in 30% and at age 19 in 74% of these subjects. Four latent trajectory classes were identified Class 1 (5.1%) reported no blackouts; for Class 2 (29.5%), ARBs rapidly increased with age; for Class 3 (44.9%), blackouts slowly increased; and for Class 4 (20.5%), ARBs were consistently reported. Using Class 2 (rapid increasers) as the reference, predictors of class membership included female sex, higher drinking quantities, smoking, externalizing characteristics, and estimated peer substance involvement (pseudo R(2) = 0.22).CONCLUSIONS:
ARBs were common and repetitive in these young subjects, and predictors of their trajectories over time involved multiple domains representing diverse characteristics.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Etanol
/
Amnésia
Tipo de estudo:
Etiology_studies
/
Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adolescent
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Adult
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Female
/
Humans
/
Male
País como assunto:
Europa
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article