|
Variables
|
Pregnant women in their first pregnancy (n, %, mean ± SD)
|
Pregnant women in their second pregnancy (n, %, mean ± SD)
|
χ2/t
|
p value
|
|---|
|
Fetal macrosomia
|
|
Yes
|
79 (7.2)
|
36(7.1)
| | |
|
No
|
1015 (92.8)
|
468 (92.9)
|
0.003
|
0.955
|
|
Maternal age (years)
|
29.21±3.51
|
28.80±3.39
|
2.207
|
0.027*
|
|
Maternal height (m)
|
1.61±0.05
|
1.61±0.05
|
1.362
|
0.174
|
|
Delivery weight (kg)
|
60.68±8.72
|
62.12±8.38
|
− 3.109
|
0.002**
|
|
Maternal BMI (kg/m2)
|
23.31±3.21
|
23.98±3.08
|
− 3.871
|
0.000***
|
|
Gestational diabetes mellitus
|
|
Yes
|
39 (3.6)
|
18 (3.6)
| | |
|
No
|
1055 (96.4)
|
486 (96.4)
|
0.000
|
0.995
|
|
Gestational hypertension
|
|
Yes
|
39 (3.6)
|
33 (6.5)
| | |
|
No
|
1055 (96.4)
|
471 (93.5)
|
7.134
|
0.008
|
|
Physical activity time (daily)
|
|
< 30 min
|
873 (79.8)
|
409 (81.2)
| | |
|
≥ 30 min
|
221 (20.2)
|
95 (18.8)
|
0.397
|
0.528
|
|
Fetal birth weight (g)
|
3334.63±620.82
|
3448.73±758.73
|
− 3.174
|
0.002**
|
|
Fetal gender
|
|
Male
|
587 (53.7)
|
268 (53.2)
| | |
|
Female
|
507 (46.3)
|
236 (46.8)
|
0.032
|
0.858
|
- *p < 0.05; **p < 0.01;***p < 0.0001. SD standard deviation, BMI body mass index
- Maternal BMI refers to the last weight recorded before delivery
