Table 1.

Results of four hypothetical placebo-controlled (1–4) and two active treatment-controlled (5 and 6) studies: number of events/number of patients in each group.

Study	New drug	Placebo-controls	Active-treatment controls	Relative Risk
1	2/60	2/60	–	1.0
2	9/400	5/400	–	1.8
3	10/500	5/500	–	2.0
4	13/500	7/500		1.6
5	5/1000	–	2/1000	2.5
6	6/1000	–	3/1000	2.0