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Table 4 Pregnancy rates below and above 11 mm endometrial thickness

From: The correlation between endometrial thickness and outcome of in vitro fertilization and embryo transfer (IVF-ET) outcome

Endometrial thickness on day of HCG

Group A (n)

Group B (n)

Pregnancy rate

< 11 mm

283

634

30.90%

≥ 11 mm

599

948

38.70%

Total

882

1582

35.80%

  1. P = 0.001
  2. RR = 1.25, (95% CI 1.12–1.41)