Table 2

Determinants of having had sex or met sex partner at bathhouses and sex clubs†

Variables		Odds ratio (95% CI)
Variables		Univariate analysis	Multivariate analysis
*p Value<0.05.
†Had sex or met sex partners during the period when syphilis infection probably occurred (critical period).
‡Condom was used at last intercourse.
Demographic
Age (years)	30–39 v 20–29	1.88 (1.19 to 2.96)*	1.72 (1.06 to 2.80)*
	40–49 v 20–29	1.99 (1.23 to 3.19)*	1.82 (1.08 to 3.07)*
	50+ v 20–29	1.14 (0.56 to 2.31)	1.05 (0.49 to 2.24)
Race/ethnicity	African-American v white	0.64 (0.37 to 1.12)	0.77 (0.43 to 1.39)
	Hispanic v white	0.85 (0.62 to 1.18)	1.06 (0.74 to 1.53)
	Other/mixed v white	1.13 (0.61 to 2.09)	1.26 (0.65 to 2.43)
HIV positive	Yes v no	1.91 (1.36 to 2.68)*	1.69 (1.17 to 2.43)*
Behavioural
Anal insertive	Yes v no	1.65 (1.09 to 2.52)*	1.60 (1.01 to 2.53)*
Anal receptive	Yes v no	1.57 (1.05 to 2.34)*	1.08 (0.69 to 1.68)
Oral sex	Yes v no	1.56 (0.64 to 3.83)	0.85 (0.32 to 2.28)
Anonymous partners	Yes v no	6.18 (3.37 to 11.32)*	5.37 (2.88 to 10.02)*
Condom use	No v yes	2.02 (1.72 to 2.38)*	1.98 (1.64 to 2.14)*
Incarcerated	Yes v no	0.74 (0.35 to 1.57)	0.78 (0.35 to 1.72)
Injecting drug user	Yes v no	2.22 (0.76 to 6.47)	1.69 (0.56 to 5.10)
Non-injecting drug user	Yes v no	1.65 (1.21 to 2.25)*	1.70 (1.21 to 2.37)*