NHBS was classified as non-research by the CDC and was not reviewed by the CDC institutional review board (IRB); each local NHBS site reviewed the CDC study protocol and obtained approval from their respective IRBs.Participants were asked about the total number of men and women with whom they had sex (men: anal or oral sex; women: vaginal, anal or oral sex) in the 12 months before the interview.Age differences in partner number were seen only among chat room users.MSM who were black, Hispanic or had a main sex partner reported fewer casual sex partners.We then fit interaction models that individually considered each of our four pre-specified interactions.Least-squares means were calculated for the levels of each factor of interest by plugging the pertinent value for the factor into the estimated model, along with values for the other model terms according to their marginal distribution in the sample (observed-margins weighting).
] are experiencing a resurgence in HIV transmissions since at least 2000.
Respondents' demographic and risk-behavior characteristics were summarized descriptively.
The number of participants reporting a casual partner in the 12 months before the interview was tallied, along with the median numbers of casual and main male partners.
In the United States, MSM of color, especially younger MSM, are particularly affected in terms of new HIV infections in recent years .
The reasons for racial/ethnic disparities in HIV infection are unclear, but it is likely that these disparities are explained by a complex set of behavioral, network, structural and, perhaps, biological factors .