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Table 2 Clinical characteristics of the recruited women undergoing IVF-ET treatment

From: Association of the peripheral blood levels of circulating microRNAs with both recurrent miscarriage and the outcomes of embryo transfer in an in vitro fertilization process

History of embryo transfer treatment

Clinical characteristics

Outcome of embryo transfer

P value

Failure

Pregnancy

n

Mean ± SD

n

Mean ± SD

1st time

Age (years)

53

33.8 ± 0.73

50

31.0 ± 0.57

0.0040

Number of transferred embryo

1.98 ± 0.6312

1.98 ± 0.3488

0.9788

Infertility duration (years)

5.74 ± 0.69

4.89 ± 0.50

0.3234

BMI (kg/m2)

22.1 ± 0.48

21.9 ± 0.32

0.7683

FSH (mIU/ml)

7.49 ± 0.43

8.14 ± 0.43

0.2831

LH (mIU/ml)

3.85 ± 0.32

4.37 ± 0.44

0.3418

2nd–4th time

Age (years)

21

31.2 ± 0.77

22

31.6 ± 1.15

0.8275

Number of transferred embryo

1.95 ± 0.47

1.86 ± 0.99

0.4334

Infertility duration (years)

3.95 ± 0.63

5.91 ± 0.82

0.0670

BMI (kg/m2)

21.4 ± 0.51

22.4 ± 0.50

0.1875

FSH (mIU/ml)

6.74 ± 0.41

6.45 ± 0.38

0.6063

LH (mIU/ml)

3.92 ± 0.68

5.32 ± 0.78

0.1864

Total

Age (years)

74

31.0 ± 0.59

72

32.5 ± 0.58

0.6326

Number of transferred embryo

1.99 ± 0.45

1.93 ± 0.46

0.3360

Infertility duration (years)

4.93 ± 0.43

5.41 ± 0.54

0.4898

BMI (kg/m2)

22.0 ± 0.29

22.0 ± 0.36

0.9880

FSH (mIU/ml)

7.50 ± 0.37

7.50 ± 0.31

0.9936

LH (mIU/ml)

3.95 ± 0.36

4.44 ± 0.32

0.2989