Table 2. Example of Simpson’s paradox (taken from [17]).
Therapy A | Therapy B | |
(Therapy successes/Patients) | (Therapy successes/Patients) | |
Small kidney stones Large kidney stones | 93% (81/87) 73% (192/263) | 87% (234/270) 69% (55/80) |
Together | 78% (273/350) | 83% (289/350) |