Table 4.

Unadjusted and Adjusted Association between method of contraception and trichomoniasis

Contraceptive method (time-varying)	Non- Trichomoniasis intervals (%)	Trichomoniasis intervals (%)	cHR (95% CI)	aHR# (95% CI)
Non-hormonal‡	5626 (77%)	489 (85%)	Ref	Ref
DMPA	659 (9%)	18 (3%)	0.38*** (0.22-0.65)	0.43** (0.25-0.74)
Implant	45 (1%)	2 (0%)	0.62 (0.10-3.73)	----
OCPs	981 (13%	65 (11%)	0.87 (0.63-1.20)	0.95 (0.7-1.31)

OCP: oral contraceptive pill; IUD: copper intrauterine device; DMPA: Depot Medroxyprogesterone Acetate; cHR: crude hazard ratio; aHR: adjusted hazard ratio; CI: confidence interval

^#Controlling for women’s HIV status, pregnancy status, breastfeeding, active genital ulcer, bacterial vaginosis, and vaginal candidiasis

^‡no method, condoms, permanent (excludes copper intrauterine devices)

^*p-value<0.05

^**p-value<0.01

^***p-value<0.001.

Number of events in Implant group too few to allow for adjusted estimates