Development and immediate impact of a self-instruction curriculum for an adolescent indicated drug abuse prevention trial

This article describes the development and immediate impact of a self-instruction indicated drug abuse prevention program, Project Towards No Drug Abuse (TND). Self-instruction programming often is used to help youth that are at high risk for dropout and drug abuse to complete their high school education, and is a method of choice among educators at alternative high schools. This article describes the justification for the self-instruction program, keys to good programmed self-learning, and how a 12-session health educator delivered program was converted to a self-instruction format. In addition, the immediate impact of a 3-group experimental trial is presented. Health educator led, self-instruction, and standard care control conditions are compared on knowledge change, and the two program conditions are compared on process ratings. Self-instruction programming can be successfully adapted from a health educator-led format, though the lack of student group interaction in this modality may limit its receptivity among students.     

The Healthy Young Men's Study: Sampling Methods to Recruit a Random Cohort of Young Men Who Have Sex With Men

Recruiting a scientifically sound cohort of young men who have sex with men (YMSM) is an enduring research challenge. The few cohort studies that have been conducted to date on YMSM have relied on nonprobability sampling methods to construct their cohorts. While these studies have provided valuable information about HIV risk behaviors among YMSM, their generalizability to broader YMSM populations is limited. In this article, the authors describe a venue-based sampling methodology used to recruit a large and diverse cohort of YMSM from public venues in Los Angeles County, California. Venue-based sampling is a multistage probability sampling design that uses standard outreach techniques and standard survey methods to systematically enumerate, sample, and survey hard-to-reach populations. The study design allowed the authors to estimate individual, familial, and interpersonal psychosocial factors associated with HIV risk and health-seeking behaviors for a cohort of YMSM with known properties. Study participants completed an extensive baseline survey and over a 2-year period completed four follow-up surveys at 6-month intervals. The baseline survey was administered in both English and Spanish.