Table 3

Minimum detectable increases in the proportion of variance in continuous variables explained by infant feedinga, b, c

Variable tested

Degrees of Freedom for Test Variable

R2 for confounders


0.05

0.10

0.20

0.30


Infant feeding (intensive lactation vs. intensive formula feeding)

1

0.0075

0.0071

0.0063

0.0055


aContinuous variables: plasma glucose and insulin levels, indices of insulin secretion, body weight or waist girth, and adiponectin

bAdjusting for confounders that account for various proportions of explained variance (R2)

cN = 986 (one-year exam), significance level = 0.05, power = 0.80

Gunderson et al. BMC Public Health 2011 11:952   doi:10.1186/1471-2458-11-952

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