|
Adjusted odds ratios [95 % CI]
|
---|
RDS 32–36 weeks
|
RDS 37–38 weeks
|
---|
Maternal age
|
<20 years
|
1.14 [1.07, 1.21]
|
0.86 [0.78, 0.96]
|
20–34
|
Reference
|
Reference
|
≥35
|
0.97 [0.95, 0.98]
|
0.95 [0.92, 0.97]
|
Multi-fetal gestation
|
9.6 [9.2, 10.0]
|
3.65 [3.18, 4.20]
|
Smoking
|
1.42 [1.35, 1.50]
|
1.55 [1.42, 1.68]
|
Diabetes mellitus
|
2.04 [1.90, 2.18]
|
2.71 [2.45, 3.01]
|
Chronic hypertension
|
2.86 [2.59, 3.16]
|
2.74 [2.29, 3.28]
|
Any congenital anomaly
|
4.81 [4.48, 5.17]
|
6.22 [5.57, 6.94]
|
Male sex
|
1.41 [1.36, 1.46]
|
1.67 [1.57, 1.77]
|
- Odds ratios were estimated by contrasting the outcome among those with and those without the risk factor e.g., RDS 37–38 weeks among infants/fetuses at risk of smokers vs. non-smokers