Table 3.

Association between demographic factors and genotype distribution in MDD patients

Factor/genotype	rs11904814		P	rs6740584		P	rs2253206		P	rs2551941		P
	TT	TG/GG		TT	TC/CC		GG	GA/AA		AA	AT/TT
Gender
Female	62	359	0.533	149	272	0.847	62	359	0.956	76	345	0.893
Male	21	144		57	108		24	141		29	136
Smoking
No	11	73	0.762	23	61	0.107	13	71	0.823	13	71	0.529
Yes	72	430		183	319		73	429		92	410
Drinking
No	3	21	0.812	11	13	0.264	2	22	0.371	4	20	0.871
Yes	80	482		195	367		84	478		101	461
Family harmony
No	28	161	0.756	71	118	0.400	27	162	0.854	35	154	0.794
Yes	55	342		135	262		59	338		70	327
Childhood trauma
No	79	449	0.095	194	334	0.015*	82	446	0.078	99	429	0.113
Yes	4	54		12	46		4	54		6	52

^*indicate a significant (P < 0.05) difference.