|
Variables
|
No. of children (%)
|
|---|
|
Sex
|
|
Male
|
700 (50.5)
|
|
Female
|
686 (49.5)
|
|
Number of siblings
|
|
1
|
908 (65.5)
|
|
2
|
362 (26.1)
|
|
≥ 3
|
116 (8.4)
|
|
Place of delivery
|
|
Hospital
|
1285 (92.7)
|
|
Home
|
101 (7.3)
|
|
Age of mother (years)
|
|
< 30
|
881 (63.6)
|
|
≥ 30
|
505 (36.4)
|
|
Maternal education level
|
|
< senior middle school
|
274 (19.8)
|
|
≥ senior middle school
|
1112 (80.2)
|
|
Maternal employment status
|
|
Home fulltime
|
315 (22.7)
|
|
Employed
|
1071 (77.3)
|
|
Residence
|
|
Urban
|
710 (51.2)
|
|
Rural
|
676 (48.8)
|
|
Immigration status
|
|
Resident
|
843 (60.8)
|
|
Non-local
|
543 (39.2)
|
|
Family income per month (CNY) a
|
7336.9 ± 82.3
|
- a: continuous variable, presented as Mean ± S.D
