In contrast to previous research, STI risk behaviors were not statistically associated with trichomoniasis in our study. In bivariate analysis (not shown), we did find that trichomoniasis was significantly associated with a greater likelihood of exchanging sexual intercourse for money, younger age at first intercourse (vs no sexual intercourse), and binge drinking, but these relationships were not statistically significant when we included sociodemographic variables inmultivariate analyses. These disparate findings may be attributable to measurement error or potentially to differences in the pathogenesis of specific STIs.