Table 2

Power analysis. 

Outcome controlOutcome intervention% DifferencePower
0.300.2190.76
0.300.20100.85
0.250.15100.90
0.250.1690.82
0.250.1780.72
0.200.10100.95
0.200.1280.81
0.200.1370.69
  • Highlighted area corresponds to stated assumptions  in the text.