Sample sizes required per group for 90 power with a one-tailed test of the difference in two independent proportions
The 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 |
|||||||||