Table 6 Correlation analysis between age, previous failed ET cycle, tertiles of E2/P ratios and the displaced WOI in patients who received ERA test.

From: The study on the clinical efficacy of endometrial receptivity analysis and influence factors of displaced window of implantation

Age group (years)

Age ≤ 30 (n = 226)

30 years < Age ≤ 35 (n = 351)

Age > 35 (n = 205)

P value

Normal WOI rate

58.0% (131/226)

48.4% (170/351)

39.0% (80/205)

 < 0.001

Displaced WOI rate

42.0% (95/226)

51.6% (181/351)

61.0% (125/205)

Previous failed ET cycle group

No. of previous failed ET cycle = 1 (n = 301)

No. of previous failed ET cycle = 2 (n = 337)

No. of previous failed ET cycle ≥ 3 (n = 144)

P value

Normal WOI rate

59.1% (178/301)

45.4% (153/337)

34.7% (50/144)

 < 0.001

Displaced WOI rate

40.9% (123/301)

54.6% (184/337)

65.3% (94/144)

Tertiles of E2/P ratios group (pg/ng)

E2/P ≤ 4.46 (n = 261)

4.46 < E2/P ≤ 10.39 (n = 261)

E2/P > 10.39 (n = 260)

P value

Normal WOI rate

45.2% (118/261)

59.4% (155/261)

41.5% (108/260)

 < 0.001

Displaced WOI rate

54.8% (143/261)

40.6% (106/261)

58.5% (152/260)

  1. ERA endometrial receptivity analysis, WOI window of implantation, BMI body mass index, AMH anti-Müllerian hormone, ET embryo transfer.
Back to article page