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Table 3 The relationship between clinical outcome and endometrial thickness and pattern

From: The effect of endometrial thickness and pattern measured by ultrasonography on pregnancy outcomes during IVF-ET cycles

  Clinical pregnancy rate (%) Implantation rate (%)
Group Pattern A Pattern B Pattern C P Pattern A Pattern B Pattern C P
Group 1 27.8 (5/18) 20.8 (5/24) 40 (2/5) NS 15.8 (6/38) 9.6 (5/52) 20 (2/10) NS
Group 2 55.6 (557/1001) 50.2 (308/614) 34.3 (46/134) <0.05 35.7 (757/2122) 31.9 (416/1303) 22.1 (64/289) <0.05
Group 3 56.0 (42/75) 76.1 (35/46) 62.5 (10/16) NS 35.5 (55/155) 46.0 (46/100) 35.3 (12/34) NS
P NS <0.01 NS   <0.05 <0.01 NS  
  1. Endometrial thickness: Group 1: ≤7 mm; Group 2: >7 mm to ≤14 mm; Group 3: >14 mm.
  2. Pattern A was defined as a triple-line pattern consisting of a central hyperechoic line surrounded by two hypoechoic layers. Pattern B was defined as an intermediate isoechogenic pattern with the same reflectivity as the surrounding myometrium and a poorly defined central echogenic line. Pattern C was defined as homogenous, hyperechogenic endometrium.
  3. NS: not significant