Edward M. Adlaf

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OBJECTIVE This study aimed to describe the natural course of DSM-III-R alcohol disorders as a function of age at first alcohol use and to investigate the influence of early use as a risk factor for progression to the development of alcohol disorders, exclusive of the effect of confounding influences. METHOD Data were obtained from a community sample(More)
OBJECTIVE To examine the association between early childhood speech and language disorders and young adult psychiatric disorders. METHOD In a longitudinal community study conducted in the Ottawa-Carleton region of Ontario, Canada, interviewers administered structured psychiatric interviews to age 19 participants who were originally identified as(More)
Data from a randomly selected sample of 840 Ontario students were used to examine factors that affect self-rated physical health. Analyses focused on demographics, family structure, family financial situation, child-parent relationship, school achievement, self-esteem, alcohol, tobacco and cannabis use as factors which directly and indirectly influence(More)
This article examines the relationship between vigorous physical activity and psychologic distress (by using the General Health Questionnaire-12) among a sample of 2,104 adolescents. Multiple regression analysis revealed a differential relationship between physical activity and dimensions of the General Health Questionnaire-12. Specifically, vigorous(More)
BACKGROUND The decline in physical activity during adolescence is a key public health concern. This comparative study assesses whether the age-related decline in physical activity among high school students occurs similarly in the United States (U.S.) and Ontario, whether the decline in physical activity is steady throughout the age range, or whether any(More)
OBJECTIVES To describe the prevalence of gambling disorders in adolescent students in Ontario. METHOD Data were based on a random survey of 2371 Ontario students in grades 7 to 13 using the South Oaks Gambling Screen revised for adolescents (SOGS-RA). RESULTS In total, 5.8% of students met the criteria for past-year problem gambling, and an additional(More)
PURPOSE To evaluate the relationships between the time spent on sedentary activities (computer usage, video game playing, television viewing, and reading) and physical inactivity in a sample of youth (aged 12-19 years) from the 2000-2001 Canadian Community Health Survey. METHODS The study sample included 7982 youth (4034 males, 3948 females) across Canada(More)
OBJECTIVE Student drinking is largely related to the setting of the drinking occasion as well as to individual psychosocial characteristics. This article assesses the effect of the reasons for drinking on situational alcohol use above and beyond other environmental and individual factors. METHOD The data were drawn from the Canadian Campus Survey, a(More)
Using a multi-level approach, we examined the contribution of drinking setting characteristics and of individual characteristics on the alcohol intake per drinking occasion. The data are drawn from the Canadian Campus Survey, a national mail survey conducted in 1998 with a random sample of 8,864 students in 18 universities. For each student, up to five(More)
© 2000 Canadian Medical Association or its licensors The issue of medical marijuana use has been on the forefront of public debate. There are indications that marijuana is sometimes used to alleviate pain from cancer, to reduce nausea from chemotherapy, to mitigate the wasting syndrome of AIDS, and for the treatment of glaucoma, epilepsy, multiple sclerosis(More)