Involvement of tryptophan hydroxylase 2 gene polymorphisms in susceptibility to tic disorder in Chinese Han population

Table 6 Haplotype Frequency between children with TD and normal controls among the male children

Haplotypes^a	Number and frequency (%)		χ ²	P	OR [95%CI]
	Male TD children	Male normal controls^b
C-T	54(48.21)	49(57.63)
T-G	36(32.59)	21(24.89)	1.717	0.190	1.556 [0.802–3.018]
C-G	22(19.2)	14(16.77)	0.812	0.368	1.426 [0.658–3.091]

^aHaplotypes were constructed using rs4565946 and rs4570625 single-nucleotide polymorphisms, from left to right. No T-T haplotype was observed.
^b Percentages may not equal 100 because of rounding.