|
Variable
| |
Reference
|
P
|
Crude OR
|
Adjusted ORa
|
95%CI
|
|---|
|
Passive smoking
|
Yes
|
No
|
0.019
|
1.356
|
1.404
|
1.057–1.864
|
|
Gestational gain
|
Less
|
Normal
|
0.009
|
1.659
|
1.484
|
1.103–1.998
|
|
More
| |
< 0.001
|
0.431
|
0.369
|
0.236–0.577
|
|
Economic status (Ұ/month)
|
3001–5000
|
≤3000
|
0.032
|
0.669
|
0.715
|
0.526–0.971
|
|
5001–7000
| |
0.104
|
0.576
|
0.687
|
0.437–1.080
|
|
> 7000
| |
0.026
|
0.391
|
0.526
|
0.299–0.926
|
|
Pre-pregnancy BMI
|
< 18.5
|
18.5–23.9
|
< 0.001
|
2.008
|
1.718
|
1.278–2.310
|
|
24–27.9
| |
0.826
|
0.965
|
1.065
|
0.607–1.868
|
|
≥28
| |
0.569
|
1.079
|
1.409
|
0.433–4.579
|
|
Parity
|
>1
|
1
|
< 0.001
|
0.535
|
0.506
|
0.368–0.695
|
|
History of LBW
|
Yes
|
No
|
< 0.001
|
3.728
|
4.087
|
2.070–8.069
|
|
Antenatal care
|
5–9
|
≤4
|
0.344
|
0.664
|
0.808
|
0.519–1.257
|
|
10–14
| |
0.014
|
0.425
|
0.557
|
0.349–0.889
|
|
≥15
| |
0.024
|
0.222
|
0.305
|
0.108–0.858
|
|
Gestational hypertension
|
Yes
|
No
|
< 0.001
|
4.600
|
6.598
|
3.915–11.122
|
- note: OR odds ratio; CI confidence interval; LBW low birth weight; BMI body mass index; Control normal weight term baby
- aVariables in the logistic regression include maternal characteristics, pre-pregnancy BMI, parity, history of LBW, antenatal care, fetal sex, and gestational hypertension
