Table 2. Bivariable Cox analyses of potential confounders associated with HSV-2 acquisition among female sex workers in Vancouver, Canada (N=143).

Characteristic	Unadjusted
	Hazard Ratio (95% CI)	p - value
Age†
(per year older)	0.99 (0.96 – 1.02)	0.545
Aboriginal ancestry†
no	Reference
yes	2.10 (1.13 – 3.92)	0.020
High school completion†
no	Reference
yes	0.65 (0.35 – 1.21)	0.175
HIV seropositive*†
no	Reference
yes	3.65 (1.06 – 12.56)	0.040
STI*
no	Reference
yes	2.11 (0.63 – 7.00)	0.224
Average number of clients per week*†
(per one client increase)	1.03 (1.00 – 1.06)	0.060
Inconsistent condom use by clients*†
no	Reference
yes	1.99 (0.96 – 4.15)	0.065
Number of male intimate/non-commercial partners
(per one partner increase)	0.99 (0.97 – 1.01)	0.413
Inconsistent condom use by non-commercial partners*
no	Reference
yes	0.80 (0.41 – 1.57)	0.516
Primary place of servicing clients*†
Formal sex work establishment	Reference
Informal indoor venue	3.33 (1.27 – 8.75)	0.015
Outdoor/public space	5.41 (2.16 – 13.53)	<0.001

^*Time-updated variable using last 6 months as a reference point.

^†Considered as potential confounders in the multivariable model selection process.

CI: confidence interval; STI: sexual transmitted infection