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. Author manuscript; available in PMC: 2010 Nov 1.
Published in final edited form as: Aliment Pharmacol Ther. 2009 Aug 12;30(9):930–936. doi: 10.1111/j.1365-2036.2009.04118.x

Table 1.

Statistical power atatement

Colonic Transit Response Variable CV (%) in Healthy Subjects Effect Size (%) Detectable with 80% Power (n = 12/group)
Geometric Center (at 4 hours) 44% 50%
Geometric Center (at 24 hours) 40% 46%
Ascending Colon T1/2 51% 58%

CV, coefficients of variation.