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This study compares 1-year intrauterine device (IUD) continuation among women presenting for emergency contraception (EC) and initiating the copper (Cu T380A) IUD or the levonorgestrel (LNG) 52 mg IUD plus 1.5 mg oral LNG.

This cohort study enrolled 188 women who presented at a single family planning clinic in Utah between June 2013 and September 2014 and selected either the Cu T380A IUD or LNG 52 mg IUD plus oral LNG for EC. Trained personnel followed participants by phone, text or e-mail for 12 months or until discontinuation occurred. We assessed reasons for discontinuation and used Cox proportional hazard models, Kaplan–Meier estimates and log-rank tests to assess differences in continuation rates between IUDs.

One hundred seventy-six women received IUDs; 66 (37%) chose the Cu T380A IUD and 110 (63%) chose the LNG 52 mg IUD plus oral LNG. At …