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Table 2 Univariate analysis of factors associated with ectopic pregnancy

From: Endometrial compaction after human chorionic gonadotrophin administration reduces ectopic pregnancy rate following fresh embryo transfer in vitro fertilization/intracytoplasmic sperm injection cycles in patients with non-thin endometrium: a retrospective cohort study

Item

Ectopic pregnancy

OR / β

95%CI

P value

Age

0.96

(0.91, 1.01)

0.0866

 IVF

1.0

  

 ICSI

1.14

(0.75, 1.72)

0.5473

 IVF + ICSI

0.62

(0.27, 1.43)

0.2623

AMH

0.96

(0.90, 1.03)

0.2439

BMI

0.96

(0.90, 1.02)

0.1615

AFC

0.99

(0.96, 1.01)

0.2761

Tubal factor infertility

 Yes

1.0

  

 No

0.48

(0.26, 0.87)

0.0167

Male factor infertility

 No

1.0

  

 Yes

1.03

(0.69, 1.52)

0.9009

Endometriosis

 No

1.0

  

 Yes

0.00

(0.00, Inf)

0.9775

Diminished ovarian reserve

 No

1.0

  

 Yes

0.71

(0.26, 1.95)

0.5054

unexplained infertility

   

 No

1.0

  

 Yes

1.06

(0.25, 4.41)

0.9370

Duration of infertility

1.06

(0.99, 1.13)

0.1154

Number of previous ectopic pregnancy

 0

1.0

  

 ≥ 1

1.34

(0.78, 2.31)

0.2877

Total days of Gn

1.02

(0.99, 1.05)

0.1153

Total amount of Gn

1.00

(1.00, 1.00)

0.6457

E2 on the day of HCG

1.00

(1.00, 1.00)

0.4019

Number of oocytes

1.02

(0.99, 1.05)

0.1071

Number of available embryos

1.01

(0.97, 1.05)

0.7222

Number of 2PN

1.00

(0.97, 1.04)

0.8372

Endometrial thickness on the day of HCG

0.75

(0.68, 0.83)

 < 0.0001

Endometrial thickness on the day of ET

0.82

(0.75, 0.91)

0.0001

Stage of embryo transferred

 Cleavage

1.0

  

 Blastocyst

0.70

(0.46, 1.06)

0.0923

Number of high-quality embryos transferred

 0

1.0

  

 ≥ 1

0.65

(0.41, 1.04)

0.0739

Ovarian stimulation regimen

 Agonist

1.0

  

 Antagonist

1.52

(1.02, 2.27)

0.0381

 Other

0.93

(0.13, 6.87)

0.9410

Number of embryos transferred

 1

1.0

  

 2

2.13

(1.29, 3.51)

0.0030

group

 No Compress

1.0

  

 Compress

0.51

(0.33, 0.79)

0.0024