Retention of participants in clinical trials is a central concern of HIV/STI behavioral
researchers and research sponsors. This article describes the strategies used for …

Background The conduct of longitudinal clinical trials must involve effective strategies to
retain study participants in order to ensure internal validity, adequate statistical power and …

Background The identification of new HIV prevention methods that women can initiate
themselves are urgently needed, particularly in high prevalence settings. HIV prevention …

Background: The success of longitudinal trials depends greatly on using effective strategies
to retain participants and ensure internal validity, maintain sufficient statistical power, and …

Purpose: To evaluate an intervention (based on one which had previously been successful
in reducing adolescent human immunodeficiency virus (HIV) risk behaviors in the United …

The efficacy of parent-based HIV prevention interventions is dependent on the retention of
parents in clinical trials. In a sample of urban African American mothers (N= 525), we …

The purpose of this article is to evaluate the quality of published studies conducted in North
America that assessed behavior change interventions to prevent HIV'AIDS among people …

Retention of sufficient numbers of participants in longitudinal research studies is a serious
methodological concern, as retention influences the validity of the research findings. An …

PURPOSE:: Although adolescents are at high risk for human immunodeficiency virus (HIV)
infection, they have not been, included in HIV vaccine trials. METHODS:: In preparation for …

Adolescents continue to be at high risk for HIV infection, with young men who have sex with
men and youth with drug abuse and/or mental health problems at particularly high risk …