Table 3.

Main results by mifepristone group

Groups	Observed pregnancies [95% CI]	Expected pregnancies	RR (95% CI)	Percentage of prevented pregnancies (95% CI)
5 mg (n=1,206)	15 (1.2%) [0.7–2.0]	126 (10.5%)	0.594 (0.259–1.363)	88.1% (81%–93%)
10 mg (n=1,212)	9 (0.7%) [0.3–1.4]	120 (9.9%)		92.5% (86%–97%)
Total (n=2,418)	24 (1.0%) [0.8–1.2]	246 (10.2%)		90.2% (86%–94%)

Notes: Data are presented as n (%) unless otherwise stated. χ²=1.077; df =1; P=0.299.

Abbreviations: CI, confidence interval; RR, relative risk; df, degrees of freedom.