Table 1.
Baseline characteristics; median (range), or n (%)
| One pregnancy during study period | Two consecutive pregnancies during study period | |||
|---|---|---|---|---|
| Characteristics | Primiparous (n = 25) | Multiparous (n = 25) | Pregnancy 1 (n = 21) | Pregnancy 2 (n = 21) |
| Maternal age, years | 27.2 (20.6–33.5) | 27.5 (20.5–33.1) | 26.5 (17.8–42.7) | 27.7 (18.6–44.0) |
| Pregnancy length, days | 282 (255–296) | 283 (266–292) | 279 (258–294) | 278 (262–291) |
| Parity | ||||
| 0 | 25 (100 %) | 13 (62 %) | ||
| 1 | 25 (100 %) | 6 (29 %) | 13 (62 %) | |
| 2 | 2 (9 %) | 6 (29 %) | ||
| 3 | 2 (9 %) | |||
| Child weight, kg | 3.3 (2.4–4.7) | 3.8 (2.8–4.6) | 3.5 (2.8–4.5) | 3.8 (2.9–4.3) |
| Child length, cm | 49 (45–55) | 51 (47–54) | 50 (47–53) | 50 (49–53) |
| Child sex | ||||
| Boy | 10 (40 %) | 13 (52 %) | 14 (67 %) | 14 (67 %) |
| Girl | 15 (60 %) | 12 (48 %) | 7 (33 %) | 7 (33 %) |
| Maternal smoking | ||||
| No | 19 (76 %) | 20 (91 %) | 13 (62 %) | 13 (65 %) |
| Yes | 6 (24 %) | 2 (9 %) | 8 (38 %) | 7 (35 %) |