Table 1.

Comparing the efficacy of flutamide versus cyproterone in both per protocol and intention to treat analyses

Risk statistic	Intention to treat analysis			Per protocol analysis
	Value	95% CI	CSP	Value	95% CI	CSP
Relative risk	1.18	0.89–1.6	0.25	1.33	1.03–1.72	0.02
Risk difference	13%	−10.0–33.0		24%	5–43
Number needed to treat	7.7	–		4.2	2.3–20

Abbreviations: CI, confidence intervals; CSP, Chi-squared P value.