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Numbers of subjects (*based on a two-sample t-test with 80% power) needed in a two-arm study to detect various effect sizes (%) for gastric emptying T1/2 based on mean of 122 [SD=29.8] minutes.
| Effect size† (%) | Number per group* to detect listed effect size |
|---|---|
| 10 | 84 |
| 15 | 36 |
| 20 | 21 |
| 25 | 13 |
| 30 | 9 |
Effect size is the difference between groups as a percentage of the overall mean of the two groups.
