2. Optimal information size calculations; continuous outcomes.
Outcome | Type of test | Mean in control groupa | Mean in Intervention groupb | SD of outcome | Total sample sizec,d |
Coma resolution time | Superiority | 25 | 19 | 20 | 350 |
Equivalence | 25 | 19 to 31 | 20 | 382 | |
Parasite clearance time | Superiority | 42 | 36 | 20 | 350 |
Equivalence | 42 | 36 to 48 | 20 | 382 | |
Fever clearance time | Superiority | 48 | 42 | 20 | 350 |
Equivalence | 48 | 36 to 54 | 20 | 382 |
aThe mean in the control group is taken from the median control group across studies. bA six‐hour time difference was chosen to represent a clinically important benefit. cThese calculations were performed using a power calculator available at: www.sealedenvelope.com/power dAll calculation were performed for a power of 80% and an α error of 0.05.