From: Theory of obstetrics: An epidemiologic framework for justifying medically indicated early delivery
Gestational age | Stillbirths | Neonatal deaths | Live births | SGA live births | Rates (Conventional) | Fetuses at risk†| Rates (Fetuses at risk) | |||
 |  |  |  |  | SGA (%) | Perinatal mortality per 1,000 |  | Births per 1,000 | R-SGA per 1,000 | Perinatal mortality per 1,000 |
34 | 329 | 175 | 10661 | 1011 | 9.5 | 45.9 | 1583286 | 6.9 | 0.6 | 0.32 |
35 | 318 | 172 | 18128 | 1822 | 10.1 | 26.6 | 1572296 | 11.7 | 1.2 | 0.31 |
36 | 439 | 249 | 41962 | 4226 | 10.1 | 16.2 | 1553850 | 27.3 | 2.7 | 0.44 |
37 | 451 | 269 | 87566 | 9104 | 10.4 | 8.2 | 1511449 | 58.2 | 6.1 | 0.48 |
38 | 552 | 364 | 232039 | 22163 | 9.6 | 3.9 | 1423432 | 163.4 | 15.6 | 0.64 |
39 | 522 | 359 | 356922 | 35792 | 10.1 | 2.5 | 1190841 | 300.2 | 30.2 | 0.74 |
40 | 601 | 464 | 536302 | 54709 | 10.2 | 2.0 | 833397 | 644.2 | 65.9 | 1.28 |
41 | 304 | 219 | 245665 | 24104 | 9.8 | 2.1 | 296494 | 829.6 | 81.7 | 1.76 |
≥ 42 | 92 | 77 | 50433 | 5250 | 10.5 | 3.3 | 50525 | 1000.0 | 104.8 | 3.34 |
Total‡ | 8694 | 5562 | 1614531 | 160429 | 10.0 | 8.8 | 1623225 | 1000.0 | 100.0 | 8.70 |