Demographic characteristics and sexual behaviors associated with methamphetamine use among MSM and non-MSM diagnosed with AIDS in Los Angeles County.

Demographic and behavioral factors associated with methamphetamine use are presented for 455 men who have sex with men (MSM) and 228 non-MSM diagnosed with AIDS in Los Angeles County (LAC) from 2000 to 2004, as there are limited population-based data for these subgroups. Lifetime methamphetamine use was 35% for MSM, 14% for non-MSM, 50% for white MSM, and 35% for black MSM. Methamphetamine use in the previous 12 months among MSM (11%) and non-MSM (0.4%) was less than lifetime use. Compared to MSM with no history of methamphetamine use in a multivariate analysis, MSM methamphetamine users were more likely to be non-Latino (white or black) (OR = 2.8, 95% CI: 1.6, 4.9) compared to Latino and reported > or = 10 sexual partners in the previous 12 months (OR = 3.1, 95% CI: 1.7, 5.6). These data indicate that methamphetamine has been widely used by both MSM and non-MSM with AIDS in LAC and that lifetime use is associated with sexual risk behaviors among MSM.