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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Neurogastroenterol Motil. 2011 Apr 7;23(7):637–e257. doi: 10.1111/j.1365-2982.2011.01711.x

Table 1. Sample Size Assessment.

The table shows differences between two CNR1 or FAAH genotype groups that could have been detected with approximately 80% power (two-sided α = 0.05) using a two-sample t-test (assuming the observed pooled standard deviation [SD] listed in the table).

SD Mean (Group 1) Mean (Group 2)
Fasting Gastric Volume, ml 64 230 277
Δ Postprandial Accommodation Volume, ml 85 490 553
Aggregate Symptom Score (maximum 400) 72 150 203
Maximum Tolerated Volume, ml 312 1210 1440
Gastric Emptying of Solids T ½, min 36 120 147
Gastric Emptying of Liquids T ½, min 9.7 22 30