Table 3

Estimated power to detect multivitamin effects on weight change over 18 months of follow-up (n=400)
Mean difference in weight change (δ, in kg) Standard deviation of weight at baseline and follow-up (σ1= σ2, in cells/mm3) Correlation of weight between baseline and follow-up (ρ)
0.5 0.6 0.7
2 9 56 66 78
11 41 49 61
2.5 9 75 88 96
11 58 74 86
3 9 88 94 98
11 74 82 92
3.5 9 96 98 >99
11 86 92 97

Guwatudde et al.

Guwatudde et al. BMC Infectious Diseases 2012 12:304   doi:10.1186/1471-2334-12-304

Open Data