Table 1.
Preterm live births and RDS-associated neonatal deaths demographic characteristics, São Paulo state, Brazil, 2004–2015
| Preterm live births n (%) | RDS-associated neonatal deaths n (%) | |
|---|---|---|
| Maternal age (years) | n = 645,253 | n = 11,078 |
| < 20 | 109,089 (16.9) | 2,504 (22.6) |
| 20–34 | 433,067 (67.1) | 7,161 (64.6) |
| ≥ 35 | 103,097 (16.0) | 1,413 (12.8) |
| Maternal schooling (years) | n = 504,995 | n = 9,305 |
| ≤ 7 | 126,382 (25.0) | 2,850 (30.6) |
| Primiparous | n = 487,941 | n = 9,485 |
| Yes | 213,787 (43.8) | 4,276 (45.1) |
| Prenatal care visits | n = 633,801 | n = 10,693 |
| ≥ 4 | 556,029 (87.7) | 6,793 (63.5) |
| Multiple pregnancy | n = 645,110 | n = 11,078 |
| No | 556,993 (86.3) | 9,209 (83.1) |
| Delivery | n = 644,905 | n = 11,075 |
| C-section | 388,302 (60.2) | 4,707 (42.5) |
| Gestational age | n = 645,276 | n = 11,078 |
| 220/7–276/7 weeks | 32,987 (5.1) | 6,779 (61.2) |
| 280/7–316/7 weeks | 63,106 (9.8) | 3,032 (27.4) |
| 320/7–366/7 weeks | 549,183 (85.1) | 1,267 (11.4) |
| Sex | n = 645,276 | n = 11,078 |
| Male | 340,101 (52.7) | 6,336 (57.2) |
| Birthweight | n = 645,276 | n = 11,078 |
| < 1500 g | 85,898 (13.3) | 9,906 (89.6) |
| 5th minute Apgar score | n = 504,569 | n = 8,775 |
| ≥ 7 | 482,122 (95.6) | 5,211 (59.4) |
n number, n absolute frequency, RDS Respiratory distress syndrome, C-section Cesarean section