Table 1.
Characteristics of primiparous versus multiparous mothers
| Primiparous mothers (n = 102,443) |
Mothers who had 4 or more pregnancies (n = 6,337) |
All mothers (n = 138,666) |
||||
|---|---|---|---|---|---|---|
| mean ± SD | median (range) | mean ± SD | median (range) | mean ± SD | median (range) | |
| Maternal age, years | 26.74 ± 5.5 | 26 (12–52) | 27.17 ± 5.59 | 27 (12–52) | 26.87 ± 5.51 | 26 (12–52) |
| Gestational age, weeks | 38.54 ± 2.41 | 39 (24–42) | 38.41 ± 2.58 | 39 (24–42) | 38.53 ± 2.41 | 39 (24–42) |
| Number of pregnancies | 1 | 1 | 4.8 ± 1.2 | 4 (4–14) | 1.45 ± 0.96 | 1 (1–14) |
| Number of abortions | 0 | 0 | 3.62 ± 1.57 | 4 (1–4) | 0.16 ± 0.49 | 0 (0–8) |
| Number of living children | 0 | 0 | 3.19 ± 1.85 | 3 (0–14) | 0.90 ± 1.08 | 1 (0–14) |