Table 2.

Associations between participant characteristics and any STI, the Sino-Implant Study, Kingston, Jamaica

	Prevalence ratio*	95% CI
Positive prostate-specific antigen test	1.04	0.89 to 1.21
Self-reported unprotected sex in the past two days	1.16	0.99 to 1.36
Age (per increase of 1 year)	0.98	0.97 to 0.99
Parity (per increase of 1)	0.97	0.91 to 1.05
Single, never married	1.20	0.99 to 1.46
Did not complete high school	1.10	0.93 to 1.30
Four or more alcoholic drinks in 1 day in the past week	1.14	0.77 to 1.69
Ever received money or gifts in exchange for sex	0.96	0.68 to 1.36
Hormonal contraception in the past month	1.18	0.99 to 1.40
More than one partner in the past month	1.05	0.80 to 1.37

^*Adjusted for study arm.