Table 1 The major clinical and laboratory characteristics of IVF patients who progressed to chemical/clinical pregnancy and those who failed to become pregnant. (mean ± SD)

Age (years)

34.35 ± 5.84

35.45 ± 6.21

31.67 ± 3.91

0.030

BMI (kg/m²)

24.02 ± 3.12

24.06 ± 3.29

23.92 ± 2.85

0.273

Female infertility, n (%)

14 (45.16)

9 (45.00)

5 (45.45)

0.981

Male infertility, n (%)

17 (54.84)

11 (55.00)

6 (54.55)

Number of previous IVF, n

2.10 ± 1.45

2.18 ± 1.53

1.89 ± 1.27

0.660

Serum oestradiol (pmol/l)

2919.83 ± 3379.44

3394.86 ± 3916.90

1811.44 ± 1034.49

0.930

Serum progesterone (pmol/l)

39.58 ± 21.83

39.90 ± 24.51

38.74 ± 13.71

0.854

Serum LH (IU)

5.02 ± 5.07

5.11 ± 5.89

4.83 ± 2.78

0.291

Dose of FSH stimulation (IU)

1716.13 ± 775.20

1790.91 ± 842.10

1533.33 ± 582.29

0.836

Retrieved oocytes (n)

8.16 ± 4.87

7.23 ± 4.86

10.44 ± 4.30

0.164

Duration of stimulation days

4.03 ± 1.92

3.55 ± 1.50

5.22 ± 2.39

0.266

Matured oocytes (n)

6.94 ± 4.59

6.00 ± 4.51

9.22 ± 4.15

0.406

Viable (Grade I) embryo (n)

4.03 ± 3.41

3.50 ± 3.41

5.33 ± 3.24

0.373

Transferred embryo (n)

1.71 ± 1.35

1.73 ± 1.55

1.67 ± 0.71

0.768

Serum hCG on day 12 (IU)

209.33 ± 442.26

22.97 ± 80.52

664.87 ± 622.48

0.000

Chemical pregnancy n (%)

11(35.5)

Clinical pregnancy n (%)

9 (29.0)