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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Am J Med. 2013 Sep 16;126(11):10.1016/j.amjmed.2013.07.001. doi: 10.1016/j.amjmed.2013.07.001

Table 3.

Cohen w Effect Sizes for Sustained Weight Loss

Pairwise Comparisons Month 1 Month 3
Intent-to-treat
 Promotion vs control 0.33 0.21
 Prevention vs control 0.33 0.48
 Promotion vs prevention 0.00 0.32
Evaluable cases
 Promotion vs control 0.39 0.24
 Prevention vs control 0.39 0.52
 Promotion vs prevention 0.00 0.33

Cohen w effects: 0.10 to 0.29 = small; 0.30 to 0.49 = medium; 0.50 or greater = large.