High-DNA Stainability Is Not Related to Embryonic Development and Clinical Outcomes on In Vitro Fertilization Cycles: A Retrospective Study Using a Propensity Score-Matching Analysis

Table 1

Baseline characteristics of IVF cycles of the HDS > 15% group and the HDS ≤ 15% group after matching.

	HDS > 15% group (n = 676)	HDS ≤ 15% group (n = 1928)	P-value
HDS (%)	19.01 (16.54, 24.32)	8.04 (6.15, 10.40)	<0.001
Male age (year)	34.00 (31.00, 38.00)	34.00 (30.75, 38.00)	0.564
Sperm concentration (million/ml)	55.95 (35.90, 91.83)	59.60 (37.80, 94.48)	0.175
Progressive sperm motility (%)	43.60 (33.48, 53.82)	45.20 (33.30, 56.90)	0.140
Morphologically normal spermatozoa (%)	5.25 (4.10, 7.20)	5.50 (4.20, 7.60)	0.264
DFI (%)	9.38 (6.15, 14.31)	9.02 (5.65, 14.24)	0.102
Female age (year)	32.00 (29.00, 36.00)	32.00 (29.00, 35.00)	0.760
Female BMI (kg/m^2)	21.34 (19.64, 23.24)	21.23 (19.63, 23.23)	0.527
Endometrial thickness on the day of ovulatory dose of hCG (mm)	10.00 (8.00, 12.00)	10.00 (8.00, 12.00)	0.695
Duration of infertility (year)	3.00 (1.50, 4.00)	3.00 (1.00, 4.00)	0.974
Cause of infertility
Female factor, n (% per included cycle)	359 (53.11)	1023 (53.06)	1.000
Male factor, n (% per included cycle)	102 (15.09)	268 (13.90)	0.443
Female and male factor, n (% per included cycle)	61 (9.02)	182 (9.44)	0.818
Unexplained, n (% per included cycle)	154 (22.78)	455 (23.60)	0.712
Retrieved oocytes (n)	12.00 (7.00, 19.00)	13.00 (8.00, 19.00)	0.454

Note: DFI, DNA fragmentation index; BMI, body mass index.