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AIMS A major question in national substance use prevention efforts is how much influence parents have on their children's substance use, answers to which could determine whether current school-based prevention programs that address peer pressure are sufficient or whether parents need to be involved. The present study examines whether parents act as(More)
OBJECTIVE To determine whether evidence-based socioculturally adapted collaborative depression care improves receipt of depression care and depression and diabetes outcomes in low-income Hispanic subjects. RESEARCH DESIGN AND METHODS This was a randomized controlled trial of 387 diabetic patients (96.5% Hispanic) with clinically significant depression(More)
Friendship choices and BMI were measured for 617 adolescents 11-15 years of age. Overweight youth were twice as likely to have overweight friends. There was a weak association between social position and weight status. Overweight youth nominated more friends but were nominated as friends less frequently than their normal weight peers.
OBJECTIVE This study assessed longer-term outcomes of low-income patients with cancer (predominantly female and Hispanic) after treatment in a collaborative model of depression care or in enhanced usual care. METHODS The randomized controlled trial, conducted in safety-net oncology clinics, recruited 472 patients with major depression symptoms. Patients(More)
BACKGROUND Older people are at risk for health decline and loss of independence. Lifestyle interventions offer potential for reducing such negative outcomes. The aim of this study was to determine the effectiveness and cost-effectiveness of a preventive lifestyle-based occupational therapy intervention, administered in a variety of community-based sites, in(More)
This study examined multiple influences on the use of tobacco by adolescents in China. Using the theory of triadic influences as a guide, we selected interpersonal, attitudinal/cultural, and intrapersonal constructs from baseline data to predict adolescent smoking 1 year later. We used prospective data from middle and high school students (N = 11,583) and(More)
Cronbach's a is widely used in social science research to estimate the internal consistency of reliability of a measurement scale. However, when items are not strictly parallel, the Cronbach's a coefficient provides a lower-bound estimate of true reliability, and this estimate may be further biased downward when items are dichotomous. The estimation of(More)
OBJECTIVE To test the efficacy of brief, safer-sex counseling by medical providers of HIV-positive patients during medical visits. SETTING Six HIV clinics in California. DESIGN Clinics were randomized to intervention arms evaluated with cohorts of randomly selected patients measured before and after the intervention. PARTICIPANTS Five-hundred and(More)
Few randomized trials attempt to improve insulin sensitivity and associated metabolic risks in overweight Latino youth. The purpose of this study is to examine the effects of a modified carbohydrate nutrition program combined with strength training on insulin sensitivity, adiposity, and other type 2 diabetes risk factors in overweight Latino adolescents. In(More)
This study applied piecewise latent growth modeling to longitudinal survey data from 2 different samples of adolescents (N=1,002 and N=1,206) to examine the hypothesis that development of sensation seeking in middle school would predict development of substance use (cigarettes, alcohol, and marijuana) in middle school and high school. Results showed that(More)