Table 1: Numbers required in a trial.
|
Statistical Power |
Treatment |
Placebo |
Total |
Treatment |
Placebo |
Level of Significance |
|
Sample Size |
Sample Size |
Sample Size |
Response |
Response |
||
|
90% |
8 |
8 |
16 |
90% |
20% |
P < 0.01 |
|
90% |
6 |
6 |
12 |
95% |
20% |
P < 0.01 |