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Table 4 Systematic review and meta-analysis results for included studies following FET with or without GnRH-a pretreatment

From: Pretreatment with or without GnRH-agonist before frozen–thawed embryo transfer in patients with PCOS: a systematic review and meta-analysis

  

Fixed/Random model

Outcomes

Numbers of participants

SMD/RR(95% CI)

I2 (%)

Heterogeneity (P)

Endometrial thickness on first day of progesterone supplementation (mm)

1915

0.56(0.20,0.92)

91.9

0.000

Implantation rates

2807

1.12(1.00, 1.24)

63.7

0.002

Clinical pregnancy rates

3640

1.19(1.08, 1.32)

59.0

0.001

Miscarriage rates

2091

0.82(0.65, 1.02)

2.2

0.428

Ectopic pregnancy rates

1619

1.11(0.69, 1.78)

0.0

0.783

Multiple pregnancy rates

774

1.09(0.89, 1.33)

0.0

0.466

Live birth rates

709

1.06(0.71, 1.56)

74.0

0.009

  1. RR Pooled relative risk, SMD Mean difference