Table 6. Comparison of the age characteristics of the couples receiving AIH treatment among DFI and HDS subgroups.

	DFI<30%	DFI≥30%	p	HDS<15%	HDS≥15%	p
female age groups (years)
<30	258(36.96%)	32(28.83%)	0.129	209(34.04%)	81(41.54%)	0.156
30-34	298(42.69%)	50(45.05%)		276(44.95%)	72(36.92%)
35-39	130(18.62%)	25(22.52%)		116(18.89%)	39(20.00%)
≥40	12(1.72%)	4(3.60%)		13(2.12%)	3(1.54%)
male age groups (years)
<30	172(24.64%)	17(15.32%)	0.007	129(21.01%)	60(30.77%)	0.018
30-34	313(44.84)	44(39.64%)		272(44.30%)	85(43.59%)
35-39	163(23.35%)	34(30.63%)		160(26.06%)	37(18.97%)
≥40	50(7.16%)	16(14.41%)		53(8.63%)	13(6.67%)