Table 1 Number of events and sample size according to potential efficacy rates in both arms

0.03

0.04

0.05

HIV transmission in LPV/r arm

0.01

1428 subjects

682 subjects

430 subjects

27 events

16 events

12 events

0.015

3190 subjects

1223 subjects

704 subjects

67 events

32 events

22 events

0.02

2204 subjects

1118 subjects

63 events

37 events

0.025

1800 subjects

64 events