Table 3. IBS subtype (bowel pattern) in relation to TAT haplotype copy number and sex.

TAT copies		Control (n = 142)	IBS patients (n = 103)			Association with TAT haplotype copies P value
			C (n = 32)	M (n = 31)	D (n = 40)	Control vs. IBS	Bowel patterns	Male vs. female
0	Male	1	0	0	0	0.05	0.048	0.082
	Female	0	2	2	0
1	Male	26	3	2	4			0.58
	Female	21	6	2	6
2	Male	51	4	8	22			0.001
	Female	43	17	17	8

IBS subtype: C, constipation; M, mixed; D, diarrhea.