Table 1.
Characteristics of the 298 mother–child pairs, as compared to general cohort.
| Characteristics | Study group (n = 298) | Total cohort (N = 490) |
|---|---|---|
| Maternal age, mean ± SD | 29.8 ± 5.5 | 29.7 ± 5.7 |
| Maternal education, n (%) | ||
| Low | 95 (31.9) | 194 (29.5) |
| Medium | 78 (26.1) | 247 (37.6) |
| High | 125 (41.9) | 215 (32.8) |
| Maternal smoking, n (%) | ||
| No | 252 (84.6) | 408 (84.1) |
| 1–5 cigarettes per day | 28 (9.4) | 40 (8.2) |
| >5 cigarettes per day | 18 (6.0) | 36 (7.7) |
| Parity, n (%) | ||
| Primiparous | 89 (29.9) | 147 (30.2) |
| Multiparous | 209 (71.1) | 339 (69.8) |
| Pre-pregnancy BMI, mean ± SD | 24.5 ± 4.4 | 24.3 + 4.3 |
| Child sex, n (%) | ||
| Male | 153 (51.3) | 251 (51.2) |
| Female | 145 (48.7) | 239 (48.8) |
| Duration of exclusive breastfeeding, n (%) | ||
| <1 month | 34 (11.4) | 45 (9.0) |
| 1–3 months | 42 (14.1) | 59 (11.8) |
| >3 months | 222 (74.5) | 349 (79.2) |
SD standard deviation, BMI body mass index.