Baseline characteristics of singleton term cephalic newborns in midwifery care delivered by spontaneous vaginal birth in Ontario, 2003/04 to 2016/17, by newborn length of stay
| Characteristic | Length of stay, h; no. (%) of newborns | |
|---|---|---|
| < 6 n = 32 447 | ≥ 6 n = 69 405 | |
| Maternal age, yr | ||
| < 20 | 385 (1.2) | 1601 (2.3) |
| 20–24 | 2890 (8.9) | 8202 (11.8) |
| 25–29 | 9273 (28.6) | 21 810 (31.4) |
| 30–34 | 13 416 (41.3) | 26 352 (38.0) |
| 35–39 | 5755 (17.7) | 10 094 (14.5) |
| ≥ 40 | 728 (2.2) | 1346 (1.9) |
| Maternal parity | ||
| Multiparous | 22 091 (68.1) | 40 182 (57.9) |
| Primiparous | 10 356 (31.9) | 29 223 (42.1) |
| Gestational age, wk | ||
| 37–38 | 5339 (16.4) | 12 876 (18.6) |
| 39–40 | 20 945 (64.5) | 42 842 (61.7) |
| ≥ 41 | 6143 (18.9) | 13 660 (19.7) |
| Missing | 20 (0.1) | 27 (< 0.1) |
| Maternal deprivation quintile* | ||
| 1 (least deprived) | 8144 (25.1) | 15 156 (21.8) |
| 2 | 7171 (22.1) | 14 491 (20.9) |
| 3 | 6082 (18.7) | 13 208 (19.0) |
| 4 | 5480 (16.9) | 12 344 (17.8) |
| 5 (most deprived) | 5025 (15.5) | 12 856 (18.5) |
| Missing | 545 (1.7) | 1350 (1.9) |
| Rural residence† | ||
| No | 29 376 (90.4) | 60 525 (87.2) |
| Yes | 3040 (9.4) | 8844 (12.7) |
| Missing | 31 (0.1) | 36 (< 0.1) |
| Maternal risk factors | ||
| Diabetes | 154 (0.5) | 1453 (2.1) |
| Hypertension | 247 (0.8) | 1896 (2.7) |
| Physician-conducted birth | 2144 (6.6) | 13 296 (19.2) |