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Table 1 Minimum detectable relative hazard of incident Type 2 diabetes mellitus and minimum detectable differences in mean change in biochemical measuresa

From: Study of Women, Infant feeding, and Type 2 diabetes mellitus after GDM pregnancy (SWIFT), a prospective cohort study: methodology and design

Outcomes

Relative Hazard; 2-year Cumulative probability of Incident Type 2 DM = .20

Detectable Difference (SD units) in Mean change 1-year, N1 = N2 = 493

Detectable Difference (SD Units) in Mean change 2-year, N1 = N2 = 431

Infant Feeding Categories

   

Intensive formula feeding

(referent)

(referent)

(referent)

Intensive lactation

(4 or more months)

0.65

0.179

0.191

  1. a Standard deviation units, two-sided test, significance level = 0.05, power = 0.80.