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. 2014 Jul 19;20:1246–1254. doi: 10.12659/MSM.890315

Table 6.

Genotype distribution of COMT Val158Met.

Genotype IBS group (n=66) Control group (n=115) χ2 P-value
G/G, n (%) 57 (86.4) 101 (87.8)
G/A, n (%) 1 (1.5) 13 (11.3)
A/A, n (%) 8 (12.1) 1 (0.9) 15.88 <0.001