TABLE 2.

Study outcomes of a randomized trial of IUD vs hormonal contraception in HIV-infected women

Outcome	Contraceptive method
	Hormonal			IUD
	n/N	Patient-years of follow-up	Rate/100 patient-years (95% CI)	n/N	Patient-years of follow-up	Rate/100 patient-years (95% CI)
Pregnancy	27/303	585	4.62 (3.17–6.73)	14/296	645	2.17 (1.29–3.67)
Discontinuation of randomized method	38/303	558	6.81 (4.95–9.35)	146/296	510	28.6 (24.4–33.7)
Pelvic inflammatory disease	0/303	588	0.00 (0.00–0.51)*	1/296	642	0.16 (0.004–87)*
Death	17/303	588	2.89 (1.80–4.65)	13/296	645	2.01 (1.17–3.47)
CD4 count falling to <200 cells/μL†	56/273	499	11.2 (8.64–14.6)	41/265	548	7.48 (5.51–10.2)
CD4 count falling to <200 cells/μL or death	72/303	547	13.2 (10.5–16.6)	52/296	607	8.57 (6.53–11.2)

^*Because of sparse numbers of events, CIs were calculated using exact methods based on Poisson count.

^†Restricted to women with baseline CD4+ count of >200 cell/μL (n = 538).