The primary aim of this paper was to assess the association of after-school club characteristics with changes in physical activity, nutrition, and attitudes in students of color after participating in the "YEAH!" Advocacy-based Physical Activity Program. We examine the strengths of school-based vs. non-school based programs in promoting feelings of self-efficacy and empowerment among students learning to become more physically active-and importantly, also test the strength of how programs that are more connected (to community-based partners) may contribute to students' optimism around policy and public health as it directly affects them. This study examined differences in the youth advocacy training impact across four after-school club types: school-based with community partnerships, school-based without partnerships, non-school-based with community partners, and non-school-based clubs without partnerships. We measured improvements in youth's "optimism for change", "assertiveness" and "decision-making" as related to after school activities and found that non-school-based programs with community partners showed highest positive impact.

Objective

Social determinants of health may be substantially affected by spatial factors, which together may explain the persistence of health inequities. Clustering of possible sources of negative health and social outcomes points to a spatial focus for future interventions. We analyzed the spatial clustering of sex work businesses in Southern California to examine where and why they cluster. We explored economic and legal factors as possible explanations of clustering.

Methods

We manually coded data from a website used by paying members to post reviews of female massage parlor workers. We identified clusters of sexually oriented massage parlor businesses using spatial autocorrelation tests. We conducted spatial regression using census tract data to identify predictors of clustering.

Results

A total of 889 venues were identified. Clusters of tracts having higher-than-expected numbers of sexually oriented massage parlors ("hot spots") were located outside downtowns. These hot spots were characterized by a higher proportion of adult males, a higher proportion of households below the federal poverty level, and a smaller average household size.

Conclusion

Sexually oriented massage parlors in Los Angeles and Orange counties cluster in particular neighborhoods. More research is needed to ascertain the causal factors of such clusters and how interventions can be designed to leverage these spatial factors.

We measured Hepatitis B virus (HBV) transmission knowledge and self-reported screening/testing behavior among Pacific Islanders (Guamanians/Chamorros, Samoans, and Tongans) in Southern California. We also examined access and trust by Pacific Islanders of varying health information sources. We administered and analyzed survey data (N = 297), using a convenience sample in Los Angeles, Orange, and San Diego Counties in spring 2009. We found that while Pacific Islander respondents reported that they receive health information from physicians, and largely trust this source, information from and trust in physicians were not statistically significant in explaining whether respondents sought HBV screening or vaccination.