Adjusted odds ratios [95 % CI] | |||||
---|---|---|---|---|---|
RDS <32 weeks | RDS 32–36 weeks | RDS 37–38 weeks | RDS ≥39 weeks | ||
Maternal age | <20 years | 1.59 [1.48, 1.71] | 1.14 [1.07, 1.21] | 0.86 [0.78, 0.96] | 1.25 [1.14, 1.37] |
20–34 | Reference | Reference | Reference | Reference | |
≥35 | 0.99 [0.97, 1.01] | 0.97 [0.95, 0.98] | 0.95 [0.92, 0.97] | 0.95 [0.92, 0.98] | |
Multifetal gestation | 11.6 [11.0, 12.2] | 9.61 [9.20, 10.0] | 3.65 [3.18, 4.20] | 3.66 [2.68, 4.98] | |
Smoking | 1.53 [1.43, 1.63] | 1.42 [1.35, 1.50] | 1.55 [1.42, 1.68] | 1.44 [1.32, 1.57] | |
Diabetes | 1.31 [1.18, 1.44] | 2.04 [1.90, 2.18] | 2.71 [2.45, 3.01] | 1.74 [1.51, 2.00] | |
Chronic hypertension | 3.89 [3.49, 4.35] | 2.86 [2.59, 3.16] | 2.74 [2.29, 3.28] | 1.65 [1.25, 2.20] | |
Any congenital anomaly | 9.4 [8.79, 10.1] | 4.81 [4.48, 5.17] | 6.22 [5.57, 6.94] | 7.25 [6.50, 8.09] | |
Male sex | 1.09 [1.04, 1.14] | 1.41 [1.36, 1.46] | 1.67 [1.57, 1.77] | 1.45 [1.36, 1.54] |