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Power calculations for different prevalences of a single risk factor for trial discontinuation; RCT, randomized controlled trial; OR, odds ratio
|
Prevalence (%) of risk factor | ||
|---|---|---|
| Completed RCTs | RCTs discontinued due to slow accrual | Study power (%) to detect OR = 2.0 |
| 10 |
18 |
65 |
| 20 |
33 |
88 |
| 30 |
46 |
95 |
| 40 | 57 | 96 |
