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Table 5 The independent predictors of pregnancy outcomes in artificial FET cycles by logistic regression analysis

From: Strengthened luteal phase support for patients with low serum progesterone on the day of frozen embryo transfer in artificial endometrial preparation cycles: a large-sample retrospective trial

 

Clinical pregnancy

Live birth

RR

95% CI

P value

RR

95% CI

P value

Female age

0.96

0.94

0.99

0.00

0.96

0.93

0.98

0.00

Infertility duration

1.00

0.96

1.03

0.93

0.99

0.95

1.02

0.42

Basal FSH value

0.94

0.88

1.00

0.05

0.94

0.88

1.00

0.06

Antral follicle counts

1.01

0.99

1.02

0.46

1.00

0.99

1.01

0.95

Embryo numbers a

1.92

1.52

2.43

0.00

1.80

1.42

2.29

0.00

Embryo stage b

1.69

1.32

2.17

0.00

1.52

1.19

1.95

0.00

Serum P on FET day c

0.81

0.68

0.96

0.02

0.84

0.70

1.00

0.05

BMI d

   

0.77

   

0.81

Underweight

0.86

0.65

1.15

0.30

0.93

0.70

1.24

0.62

Overweight

1.00

0.81

1.24

0.97

0.91

0.74

1.13

0.40

Obesity

0.99

0.67

1.47

0.97

1.04

0.71

1.54

0.83

Infertility causes e

   

0.01

   

0.15

PCOS

1.55

1.18

2.03

0.00

1.26

0.96

1.64

0.09

Male

1.41

1.04

1.92

0.03

1.38

1.02

1.87

0.04

Endometriosis

0.86

0.48

1.53

0.61

1.06

0.59

1.89

0.85

Other

1.08

0.83

1.40

0.56

1.21

0.93

1.57

0.16

  1. a Two- embryos transfer as reference group; b Cleavage embryo transfer as reference group; c serum P levels on the FET day ≥10.0 ng/ml as reference; d Normal weight as reference; e Tubal factor as the reference;