Background: Alternative (or continuation) high schools are institutions designed for students at risk for not graduating due to behavioral, educational, or medical problems. The present study explored the relationship between negative substance use consequences (eg, having trouble at school or work) and noncondom use in this at-risk population and…

This study examines medical conditions diagnosed prior to the diagnosis of autism spectrum disorder (ASD). Using a matched case control design with 3911 ASD cases and 38,609 controls, we found that 38 out of 79 medical conditions were associated with increased ASD risk. Developmental delay, mental health, and neurology conditions had the strongest…

Maternal immune activity has been linked to children with autism spectrum disorder (ASD). We examined maternal occupational exposure to asthma-causing agents during pregnancy in relation to ASD risk. Our sample included 463 ASD cases and 710 general population controls from the Study to Explore Early Development whose mothers reported at least one…

House and Ball communities (HBCs), represent a prime context for human immunodeficiency virus prevention with African American young men who have sex with men and transgender persons. This study sought to understand the composition and function of social support and sexual networks of HBC members in Los Angeles, California (N = 263). Participants…

We examined approaches used by African-American mothers and mothers of Latino descent for informal sex-related discussions with their children to inform sexually transmitted infection (STI)/HIV intervention development efforts. We recruited mothers (of children aged 12-15) from youth service agencies and a university in southern California.…

Black and Latino young men who have sex with men (YMSM) are at disproportionate risk for sexually transmitted diseases (STDs), including HIV. This study informs school-centered strategies for connecting YMSM to health services by describing their willingness, perceived safety, and experiences in talking to school staff about sexual health.…

Most interventions designed to prevent HIV/STI/pregnancy risk behaviours in young people have multiple components based on psychosocial theories (e.g. social cognitive theory) dictating sets of mediating variables to influence to achieve desired changes in behaviours. Mediation analysis is a method for investigating the extent to which a variable…

Background: Children with moderate persistent asthma are often reluctant to engage in physical activity and as a result are more prone to obesity and increased incidence of asthma attacks. Purpose: This study developed an asthma program that included physical activity and asthma management education for elementary school children with moderate…

Despite increasing rates of HIV infection among young men who have sex with men (YMSM), only a minority participate in formal HIV prevention efforts. Semi-structured mixed-methods interviews were conducted with a diverse sample of YMSM (N = 100, M[subscript age] = 25.0 years) in Los Angeles, California, to identify facilitators and barriers to…

In this study, we used a mixed methods approach to explore the determinants of relationship patterns and risky sex among homeless men living in downtown Los Angeles. This involved analysis of qualitative interviews focused on gender ideology and sexual events ("n" = 30) as well as structured interviews ("n" = 305) focused on…

College students are at high risk of experiencing serious problems related to physical and social health issues that include binge drinking, sexual assault, and contracting a sexually transmitted disease. Despite research reporting that many of these incidents co-occur on campuses, university prevention programs have failed to present the…

A growing body of research has investigated the effectiveness of abstinence-only sexual education. There remains a dearth of research on the relevant sexual health information available to young men who have sex with men (YMSM). Drawing on a mixed-methods study with 526 YMSM, this study explores how and where YMSM receive relevant information on…

Too many California children suffer from high rates of preventable chronic conditions associated with childhood obesity and dental disease. The state is experiencing a crisis in both areas. Fortunately, common factors that contribute to both conditions--including the rates of breastfeeding, access to healthy food and the consumption of…

There has been a recent slowdown in the decline of rates of tuberculosis (TB) in the United States. However, there are disparities in TB diagnosis between U.S.-born and foreign-born persons and between Whites and minorities. Measures for achieving TB elimination include identification of high-risk persons, including children and adolescents, at…

There is an urgent need for continued innovation in the design of HIV/STI prevention interventions for African American females, a group at high risk for STIs and HIV. In particular, attention to social development and to culture is needed. The present study reports on a group randomized controlled trial of a friendship-based HIV/STI prevention…