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Table 4 Clinical outcome according to thickness grouping and combined grouping of thickness and pattern

From: Combined analysis of endometrial thickness and pattern in predicting outcome of in vitro fertilization and embryo transfer: a retrospective cohort study

Thickness grouping CPR Miscarriage rate CPR by pattern Aa CPR by pattern Ba P b
Group1(n = 52) 23.1% 8.3% 11/45(24.4%) 1/7(14.3%) NS
Group2(n = 2349) 47.6% 8.9% 1047/2183(48%) 71/166(42.8%) NS
Group3(n = 495) 55.2% 6.6% 236/432(54.6%) 37/63(58.7%) NS
P b < 0.01 NS < 0.01 < 0.05 -
  1. Endometrial thickness: Group 1: ≤ 7 mm; Group 2: >7 to 14 mm; Group 3: >14 mm
  2. Pattern A = triple-line pattern, hypoechoic endometrium with well-defined hyperechoic outer walls and central echogenic line
  3. Pattern B = no-triple line pattern, isoechogenic or homogeneous hyperechoic endometrium with a poorly defined or absent central echogenic line
  4. CPR = clinical pregnancy rate
  5. aPregnant cycles/total cycles and percentage of clinical pregnancies
  6. bP-values by chi-square text
  7. NS = not significant