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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Contemp Clin Trials. 2013 Jun 28;36(1):228–243. doi: 10.1016/j.cct.2013.06.017

Table 2.

Minimum detectable standardized effects (Cohen's d) and corresponding between groups differences in BMI% at 12 and 24 months for a range of sample size assumptions.

Cohen's d for... BMI% for planned contrast when SD =
DEFF clinic ICC / DEFF child planned contrast simple effects 6 8 10
1.2 .70 / 2.12 .64 .50 3.81 5.08 6.35
1.2 .65 / 2.01 .62 .50 3.74 4.98 6.23
1.2 .60 / 1.96 .61 .48 3.66 4.88 6.10
1.1 .70 / 2.12 .61 .48 3.65 4.86 6.08
1.1 .65 / 2.01 .60 .47 3.56 4.77 5.96
1.1 .60 / 1.96 .58 .46 3.50 4.66 5.83
1.0 .70 / 2.12 .58 .46 3.47 4.62 5.78
1.0 .65 / 2.01 .57 .45 3.40 4.54 5.67
1.0 .60 / 1.96 .56 .44 3.34 4.45 5.56