Table 3.

Sensitivity of the sample size to assumptions concerning the rate of nonfatal SNA events as a proportion of the rate of fatal serious non-AIDS events and the proportion of events accepted by the Endpoint Review Committee

Ratio: nonfatal SNA to fatal SNA	% AIDS* events accepted by the ERC	Composite primary event rate per 100 person-years (deferred arm)	Hazard ratio (average over follow-up)	Sample size	Expected number of events
3	65	2.40	0.706	4,244	351
4	65	2.81	0.712	3,822	369
5	65	3.23	0.717	3.472	383
3	75	2.49	0.700	3,900	333
4	75	2.91	0.707	3,545	353
5	75	3.33	0.712	3,245	367

AIDS: acquired immunodeficiency syndrome; SNA: serious non-AIDS.