Table V.

Prospective cohort studies involving assessment of the effect of intrauterine devices on the risk of HIV acquisition

References	Nos	Study site	Population studied	Incidence of HIV/100 woman-years	Risk [95% CI] of HIV acquisition versus other methods
Martin et al. (1998)	23 IUD users, 756 other methods	Kenya	Commercial sex workers	Data not available	Cu-IUD use 1.2 [0.4–3.9]
Kapiga et al. (1998)	162 IUD users, 1208 other methods	Tanzania	Family planning clinic attendees	2.7 in IUD users versus 3.4 in non-users	Cu-IUD use 0.80 [0.38–1.69]