Table 1 Characteristics of the participants

Age (years)

31.55 ± 5.62

30.42 ± 5.86

32.25 ± 5.37

0.007

Mean number of pregnancies

3.16 ± 1.19

3.00 ± 1.12

3.26 ± 1.22

0.064

First birth weight (kg)

3.22 ± 0.39

3.19 ± 0.37

3.25 ± 0.39

0.526

Second birth weight (kg)

3.28 ± 0.35

3.26 ± 0.31

3.29 ± 0.37

0.410

Pre pregnancy BMI

23.61 ± 2.89

23.42 ± 3.12

23.72 ± 2.75

0.388

Abnormal symptoms

131 (44.56)

57 (50.89)

74 (40.66)

0.086