Table 3 Subgroup multivariate logistic regression analysis of EMT based on endometrial preparation regimen (Stepwise logistic regression)

Maternal age

1.01 (0.90–1.13)

0.843

1.23 (1.08–1.40)

0.002

Maternal BMI

1.23 (1.11–1.36)

<  0.001

1.39 (1.25–1.54)

<  0.001

Childbirth experience

0.64 (0.48–0.85)

0.002

0.46 (0.34–0.62)

<  0.001

 0.8 cm ≤ EMT ≤ 1.2 cm

Ref

Ref

 EMT <  0.8 cm

1.71 (1.22–2.33)

0.001

1.66 (0.94–2.74)

0.061

 EMT > 1.2 cm

1.02 (0.54–1.78)

0.940

1.59 (1.11–2.21)

0.008

 MAP

1.55 (1.38–1.74)

<  0.001

1.90 (1.66–2.18)

<  0.001

 GDM

1.74 (1.25–2.38)

< 0.001

1.86 (1.28–2.65)

< 0.001

 1

Ref

Ref

  > 1

0.72 (0.45–1.10)

0.151

0.81 (0.48–1.27)

0.382