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Table 3 Comparisons of outcomes between cycles preparing sperm with DGC and SU following IVF and ICSI treatments

From: Cumulative live birth rates after IVF/ICSI cycles with sperm prepared by density gradient centrifugation vs. swim-up: a retrospective study using a propensity score-matching analysis

Outcomes

IVF

ICSI

No. of cycles

 DGC

628

91

 SU

622

97

Recovery rate, %

−0.028 (− 0.074–0.18)a

− 0.040 (− 0.229–0.149)a

PR after preparation, %

− 0.006 (− 0.014–0.001)a

−0.002 (− 0.048–0.043)a

Fertilization rate, %

0.004 (− 0.036–0.045)a

0.086 (− 0.011–0.184)a

Good-quality embryo rate, %

0.020 (− 0.051–0.090)a

0.072 (− 0.132–0.276)a

Blastocyst formation rate, %

0.000 (− 0.082–0.082)a

0.043 (− 0.220–0.306)a

cLBR, % (n/n)

1.100 (0.843–1.434)b

1.389 (0.710–2.716)b

LBR per transfer, % (n/n)

1.086 (0.887–1.330)b

1.064 (0.613–1.845)b

  1. IVF In vitro fertilization, ICSI Intracytoplasmic sperm injection, DGC Density gradient centrifugation, SU Swim-up, PR Progressive motility rate, cLBR Cumulative live birth rate
  2. aAdjusted β (95%CI), DGC vs. SU
  3. bAdjusted OR (95%CI), DGC vs. SU