Table 1.

Incident Human Immunodeficiency Virus Diagnoses Among Women With Intrauterine Device Insertions, 2011–2018

	Women	Exposure Episodes	Events	Incidence Per 1000 Person-years	Crude HR (95% CI)	Weighted HR (95% CI)
Incident HIV diagnosis, ≥1
Levonorgestrel IUD	531 551	541 635	89	0.11	0.74 (0.46–1.19)	0.78 (0.48–1.28)
Copper IUD	97 475	99 389	21	0.15	ref	ref
Incident HIV diagnosis, >1
Levonorgestrel IUD	531 551	541 635	25	0.03	0.62 (0.25–1.58)	0.62 (0.24–1.59)
Copper IUD	97 475	99 389	7	0.05	ref	ref

Logistic models for inverse probability weights included age, year, and all of the following in the prior year: number of ambulatory visits, live birth, use of depot medroxyprogesterone acetate, and diagnoses of chlamydia, gonorrhea, syphilis, lupus, cirrhosis, liver cancer, breast cancer, and heavy or painful menses. Abbreviations: CI, confidence interval; HIV, human immunodeficiency virus; HR, hazard ratio; IUD, intrauterine device; ref, reference.