Table 8 Rates respiratory distress syndrome (RDS) at 32–36 weeks and 37–38 weeks per 1000 live births among infants with other neonatal morbidity, and unadjusted odds ratios and 95 % confidence intervals (CI) expressing the association between neonatal comorbidity and RDS at 32–36 weeks and 37–38 weeks, United States, 2005–2006
RDS 32–36 weeks | RDS 37–38 weeks | ||||||
|---|---|---|---|---|---|---|---|
No. | Rate per 1000 | Odds ratio [95 % CI] | No. | Rate per 1000 | Odds ratio [95 % CI] | ||
Apgar at 5 minutes | <4 | 165 | 85.2 | 3.13 [2.67, 3.68] | 50 | 34.5 | 11.4 [8.6, 15.1] |
4–6 | 733 | 99.9 | 3.73 [3.45, 4.04] | 309 | 45.1 | 15.0 [13.3, 16.9] | |
≥7 | 11,009 | 28.9 | Reference | 3917 | 3.1 | Reference | |
Small for gestational age | 2202 | 32.7 | 1.09 [1.04, 1.14] | 645 | 4.8 | 1.48 [1.36, 1.61] | |
Neonatal seizures | 27 | 102.3 | 3.63 [2.44, 5.40] | 12 | 20.1 | 6.04 [3.41, 10.70] | |
Ventilation ≥ 30 min | 3428 | 236.1 | 13.4 [12.8, 14.0] | 858 | 144.4 | 61.5 [56.8, 66.6] | |
Ventilation <30 min | 766 | 64.9 | 2.29 [2.12, 2.47] | 294 | 16.3 | 5.14 [4.56, 5.79] | |
Birth asphyxia | 4244 | 153.1 | 8.37 [8.05, 8.71] | 1175 | 46.3 | 19.2 [18.0, 20.6] | |
Meconium aspiration syndrome | 38 | 140.7 | 5.22 [3.70, 7.36] | 66 | 72.8 | 23.3 [18.1, 30.0] | |
All live births | 11,942 | 30.5 | - | 4292 | 3.4 | - | |