Table 4.

Results of multivariate analysis in a case-control study of community-associated methicillin-resistant Staphylococcus aureus skin infections among HIV-positive men who have sex with men.

Exposure during the previous 3 months	Adjusted matched ORa (95% CI)	Pb
Sex partner with skin infection	9.2 (1.4–61.5)	.022
Methamphetamine use	8.5 (1.6–45.1)	.012
Routine hands-on contact with customers at work	5.7 (1.2–26.7)	.027
Frequent fingernail biting	4.2 (1.3–14.1)	.019
Routine use of a public hot tub or sauna	3.9 (1.2–12.6)	.023
Use of TMP-SMZ for prophylaxis of opportunistic infection	0.2 (0.1–0.8)	.024
Use of a condom during every sex encounterc	0.1 (0.0–0.6)	.019

NOTE. TMP-SMZ, trimethoprim-sulfamethoxazole.

^aControlling for history of hospitalization during the previous 12 months, race/ethnicity, and number of sex partners (categorized as 0, 1, or ⩾2) during the previous 3 months.

^bBy χ² test.

^cAmong sexually active respondents.