. Author manuscript; available in PMC: 2012 Mar 1.

Published in final edited form as: Neurogastroenterol Motil. 2010 Nov 12;23(3):233–e116. doi: 10.1111/j.1365-2982.2010.01623.x

Table 2.

TPH1 Haplotype Frequencies in controls and IBS.

	Haplotype					Frequency		Chi square	p-value
	SNP1	SNP2	SNP3	SNP4	SNP5	IBS	Control	Chi square	p-value
a	A	T	T	A	A	0.408	0.402	0.009	0.926
b	G	C	G	C	C	0.202	0.199	0.001	0.971
c	A	C	T	C	C	0.180	0.203	0.329	0.566
d	G	C	T	C	C	0.169	0.158	0.074	0.786
e	A	T	T	C	C	0.025	0.006	2.061	0.151
f	A	C	G	C	C	0.009	0.016	0.310	0.578

TPH, tryptophan hydroxylase; IBS, irritable bowel syndrome