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Minimally detectable difference in standard deviation between groups according to exposure prevalence
| Proportion exposed (%) | NYU CHES cohort (n = 2000) |
|---|---|
| 50 | 0.125 |
| 20 | 0.157 |
| 10 | 0.209 |
| 5 | 0.287 |
| 1 | 0.630 |
The minimally detectable difference in the unit of standard deviation of outcome between exposed versus unexposed group were estimated using two-sample t test assuming equal variance with type I error of 5% at power of 80%
