Table 4.
Perinatal outcomes of the 2nd birth (post-intervention)
| Intervention N = 392 | Comparison N = 394 | ||
| Birth interval (months) | |||
| Mead (SD) | 40.0 (30) | 38.1 (26) | F 0.89, p 0.35; unequal variance in birth interval |
| Missing | (2) | (1) | |
| Birth weight | |||
| Mean (SD) | 3403 (509) | 3500 (504) | Difference -97 g |
| Missing data | (3) | (2) | |
| Low birth weight (<2500 g) | 25/393 | 14/394 | OR (exact) 1.85 [0.91, 3.91] |
| Birth weight <10thpercentile* | 40/378 (11%) | 31/382(8%) | OR (exact) 1.14 [0.55, 2.38] |
| Low birth weight | |||
| <1000 g | 6 | 0 | |
| 1000–1499 | 3 | 0 | |
| 1500–1999 | 7 | 2 | |
| 2000–2499 | 9 | 12 | |
| All with birth weight (≥ 2,500 g | 367 | 380 | |
| Missing data | (3) | (2) | |
| All births | 395 | 396 | |
| Gestation | |||
| Mean (SD) | 39.3 (2.2) | 39.5 (1.5) | |
| Preterm birth (<37 weeks) | 24 (6%) | 17 (4%) | OR (exact) 1.44 (0.73, 2.91) |
| Preterm birth | |||
| 20–27 weeks | 4 | 0 | |
| 28–31 weeks | 6 | 1 | |
| 32–36 weeks | 14 | 16 | |
| All with gestations ≥ 37 weeks | 366 | 374 | |
| Missing data | (2) | (3) | |
| All gestations | 392 | 394 |
*All twins excluded.