Table 2 Prevalence of low birthweight and neonatal intensive care unit (NICU) transfer/admission according to maternal smoking intensity exposure status
Maternal smoking intensity status | Low birthweight N = 80,431 (2.4%) % (95% CI) | NICU transfer/admission N = 148,172 (4.5%) % (95% CI) |
|---|---|---|
Quitter-Low | 3.6 (3.4, 3.8) | 5.3 (5.0, 5.5) |
Quitter-High | 3.7 (3.4, 4.0) | 5.8 (5.5, 6.2) |
Maintainer-Low | 5.4 (5.2, 5.6) | 6.1 (5.9, 6.3) |
Maintainer-High | 6.7 (6.5, 6.9) | 7.0 (6.8, 7.2) |
Reducer | 5.8 (5.6, 6.1) | 6.3 (6.0, 6.6) |
Increaser | 4.9 (3.8, 5.9) | 6.4 (5.1, 7.6) |