Mean Difference (SD) in Metformin Group | Mean Difference (SD) in Control Group | N needed with α = 0.05 | N needed with α = 0.10 | N needed with α = 0.20 | |
---|---|---|---|---|---|
Scenario 1 | 15 (35) | 0 (35) | 86 | 38 | 50 |
Scenario 2 | 30 (65) | 0 (65) | 74 | 59 | 43 |
Scenario 3 | 20 (25) | 5 (25) | 44 | 35 | 26 |
Scenario 4 | 30 (50) | 5 (50) | 63 | 50 | 37 |