TABLE 2.

Comparison of IVF outcomes

	hCP normal stain proportion
	Group Ⅰ (≥90%)	Group Ⅱ (80–90%)	Group Ⅲ (70–80%)	Group Ⅳ (<70%)	p for trend
Fertility rate
Crude	0.73	0.64	0.53 a	0.42 a	.010
	(0.54–0.91)	(0.57–0.76)	(0.36–0.62)	(0.28–0.61)
Adjusted b	0.70	0.64	0.48	0.39 a	.008
	(0.51–0.89)	(0.53–0.75)	(0.35–0.61)	(0.22–0.57)
Good quality blastocyst ratio
Crude	0.23	0.24	0.20	0.29	.729
	(0.03–0.43)	(0.15–0.34)	(0.07–0.34)	(0.12–0.47)
Adjusted b	0.21	0.19	0.17	0.26	.766
	(0.02–0.40)	(0.08–0.29)	(0.04–0.30)	(0.08–0.44)
Pregnancy rate
Crude	0.33	0.29	0.40	0.20	.619
	(0.06–0.61)	(0.16–0.43)	(0.22–0.58)	(−0.06–0.46)
Adjusted b	0.37	0.19	0.35	0.11	.276
	(0.11–0.62)	(0.04–0.34)	(0.17–0.52)	(−0.15–0.36)

Figures show mean (95%CI).

^a p < 0.05 vs Group.

^b Adjusted for ages of patients and patients’ wives, sperm concentration, motility, abnormality rates, and white blood cells in semen.