FAQ/tab90132013-03-08 10:17:24localhostconverted to 1.6 markup22010-07-22 14:16:51PeterWatson12010-07-22 14:16:42PeterWatsonSample sizes required per group for 90 power with a one-tailed test of the difference in two independent proportionsThe proportions for the two groups are represented by the row and column proportions. 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
0.1 219 69 36 23 16 12 9 7
0.2 322 91 44 27 18 13 9
0.3 390 103 48 27 18 12
0.4 424 108 48 27 16
0.5 424 103 44 23
0.6 390 91 36
0.7 322 69
0.8 219