Neonatal Death Rates by Birth Weight, Delivery Method, and Study Period, California, 1996–2002
| Neonatal Deaths per 1,000 Live Births | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| <1,500 g | 1,500– 2,499 g | 2,500–4,000 g | >4,000 g | ||||||
| Delivery Method | Study Period | n* | Rate (95% CI†) | n | Rate (95% CI†) | n | Rate (95% CI†) | n | Rate (95% CI†) |
| Note: Neonatal death rates calculated for singleton births delivered in California hospitals by California residents with a previous cesarean delivery, 1996–2002. Numbers bolded show significant differences (CIs do not overlap) within the birth weight category. | |||||||||
| CI = confidence interval; VBAC = vaginal birth after cesarean; attempted VBAC = successful VBAC + failed VBAC; CS = cesarean section. | |||||||||
| * Total number of births in each category. | |||||||||
| † 95% Poisson CIs. | |||||||||
| Attempted VBAC | 1996–1999 | 316 | 253.2 (197.7–308.6) | 1,589 | 1.8 (0.4–5.5) | 42,248 | 0.3 (0.2–0.5) | 6,517 | 0.3 (0.0–1.1) |
| 2000–2002 | 190 | 336.8 (254.3–419.4) | 838 | 7.2 (2.6–15.6) | 19,682 | 0.4 (0.1–0.7) | 2,863 | 0.0 (0.0–1.3) | |
| Successful VBAC | 1996–1999 | 292 | 267.1 (207.8–326.4) | 1,387 | 2.2 (0.4–6.3) | 35,528 | 0.3 (0.2–0.6) | 4,754 | 0.0 (0.0–0.8) |
| 2000–2002 | 178 | 359.6 (271.5–447.6) | 738 | 8.1 (3.0–17.7) | 16,672 | 0.1 (0.0–0.4) | 2,135 | 0.0 (0.0–1.7) | |
| Failed VBAC | 1996–1999 | 24 | 83.3 (10.1–301.0) | 202 | 0.0 (0.0–18.3) | 6,720 | 0.3 (0.0–1.1) | 1,763 | 1.1 (0.1–4.1) |
| 2000–2002 | 12 | 0.0 (0.0–307.5) | 100 | 0.0 (0.0–36.9) | 3,010 | 1.7 (0.5–3.9) | 728 | 0.0 (0.0–5.1) | |
| Repeat CS | 1996–1999 | 1,947 | 59.1 (48.3–69.9) | 6,407 | 4.7 (3.3–6.7) | 128,417 | 0.4 (0.3–0.5) | 23,559 | 0.1 (0.0–0.4) |
| 2000–2002 | 1,604 | 60.5 (48.4–72.5) | 6,072 | 6.9 (5.0–9.3) | 124,224 | 0.3 (0.2–0.4) | 19,462 | 0.5 (0.3–0.9) | |