Association of the MAOA promoter uVNTR polymorphism with suicide attempts in patients with major depressive disorder

Table 2 The genotype distributions of homozygotes or hemizygotes for the 3R and 4R alleles of the MAOA uVNTR in the four groups of participants

	Genotype, N (%)		Comm-contl		MDD		Comm-suic
Group	3R-H	4R-H	χ²	P	χ²	P	χ²	P	OR	95% C.I.
Comm-contl	199(64.82%)	108(35.18%)
Male	111(61.32%)	70(38.68%)
Female	88(69.84%)	38(30.16%)
MDD	153(57.74%)	112(42.26%)	3.016	0.082
Male	72(50.00%)	72(50.00%)	4.182	0.041*					1.586	1.019-2.467
Female	81(66.94%)	40(33.06%)	0.240	0.624
Comm-suic	30(60.00%)	20(40.00%)	0.434	0.510
Male	19(55.88%)	15(44.12%)	0.355	0.551	0.381	0.537
Female	11(68.75%)	5(31.25%)	0.008	0.929	0.021	0.885
MDD-suic	46(60.53%)	30(39.47%)	0.487	0.485
Male	22(50.00%)	22(50.00%)	1.879	0.170	0.000	1.000	0.266	0.606
Female	24(75.00%)	8(25.00%)	0.329	0.566	0.763	0.382	0.211	0.646

3R-H: homozygous or hemizygous for the 3-repeat allele; 4R-H: homozygous or hemizygous for the 4-repeat allele; OR: relative odds ratio; 95% C.I.: 95% confidence interval; a: odds ratio of 4R-H to 3R-H in relation to depression in male subjects.

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