. 2016 Apr 19;17:205. doi: 10.1186/s13063-016-1331-3
© Krag et al. 2016
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| ARR | Power | Patients per group |
| −6.1 % | 80 % | 837 |
| 90 % | 1120 | |
| +6.1 % | 80 % | 937 |
| 90 % | 1254 |