Table 1.

A hypothetical illustrative example for the dependence of heterogeneity of treatment effects on metric

Baseline	Mortality risk
Performance status	Treatment	Control	RR	Rc − Rt
1 (low risk)	.05	.1	0.5	.05
2 (median risk)	.2	.4	0.5	.2
3 (high risk)	.35	.7	0.5	.35