Table 2.
The prevalence of perinatal outcomes (n = 12,889).
| Characteristic or outcome | No. of participants (%) | Mean ± SD |
|---|---|---|
| Obstetrical outcomes | ||
| Cesarean delivery, % | 4383 (34.8) | |
| Newborn outcomes | ||
| Gestational age at delivery, week | 12,888 (100.0) | 38.8 ± 1.5 |
| Preterm birth, % | 630 (4.9) | |
| Spontaneous preterm birth, % | 426 (3.4) | |
| Birth weight, g | 12,678 (98.4) | 3191.6 ± 425.6 |
| Birth weight Z score | 12,678 (98.4) | 0.1 ± 1.0 |
| Birth weight for gestational age, % | ||
| SGA | 920 (7.3) | |
| AGA | 10,349 (82.2) | |
| LGA | 1325 (10.5) |
SD = standard deviation; AGA = appropriate for gestational age was defined as 10th ≤ birth weight ≤ 90th percentile for gestational age; SGA = small for gestational age was defined as birth weight < 10th percentile for gestational age; LGA = large for gestational age was defined as birth weight > 90th percentile for gestational age on the basis of local population-based birth weight reference.