2020 (n  =  347)

2019(n  =  475)

P

Maternal age (years)

32.12±5.32

31.01±4.21

0.000*

Delivery gestational week(weeks)

39.18±2.21

39.35±1.57

0.202

Times of pregnancy

2.14±1.19

2.07±1.15

0.411

Times of delivery

1.47±0.55

1.48±0.58

0.937

Body mass index(kg/m2)

28.40±3.49

28.23±3.67

0.513

Times of prenatal visits

10.49±2.15

10.89±1.81

0.004*

GWG(kg)

14.99±4.99

15.61±5.32

0.088

Length of hospital(days)

4.90±1.43

4.96±1.38

0.553

Score of PHQ-9

1.46±2.09

2.02±2.22

0.000*