TABLE 2.

Kaplan-Meier Estimates of 100-Day Continuation of Modern Contraception (n=2,267)

Method Information Indicators	% (95% CI)
MII
<3 questions	89.3 (87.5, 90.8)
All 3 questions	93.7 (91.7, 95.2)
MIIplus
<4 questions	89.0 (87.3, 90.5)
All 4 questions	94.7 (92.7, 96.1)
MIIplus variation
<3 questions of MII	89.3 (87.5, 90.8)
MII	82.3 (70.3, 89.8)
MIIplus	94.7 (92.7, 96.1)

Abbreviations: CI, confidence interval; MII, Method Information Index; MIIplus, Method Information Index including the question, “Were you told about the possibility of switching to another method if the method you selected was not suitable?”