Characteristics of participants included in the analysis of association between cerebral ventricular volume and temperamental difficulties in infancy
| Characteristic | Sex; median (95% CI)* | |
|---|---|---|
| Boys (n = 516) | Girls (n = 512) | |
| Child | ||
| Gestational duration, wk | 40.3 (35.9–42.4) | 40.1 (36.1–42.4) |
| Birth weight, g, mean (SD) | 3567 (539) | 3478 (540) |
| Apgar score 1 min after birth | 9 (5–10) | 9 (6–10) |
| Age at postnatal visit, wk | 6.8 (4.4–12.3) | 6.4 (4.4–12.0) |
| Head circumference at postnatal visit, mm, mean (SD) | 390 (14.2) | 383 (14.6) |
| Mother | ||
| Age, yr, mean (SD) | 31.6 (4.0) | 32.0 (3.8) |
| Some higher education, % | 63.8 | 66.1 |
| Nulliparity, % | 63.1 | 61.8 |
| Mode of delivery, % | ||
| Spontaneous vaginal | 65.9 | 68.2 |
| Instrumented vaginal | 20.2 | 15.6 |
| Cesarean section | 13.9 | 16.2 |
| Psychopathology, total score | ||
| Midpregnancy | 0.1 (0.0–0.8) | 0.1 (0.0–0.7) |
| 3 mo postpartum | 0.1 (0.0–0.9) | 0.1 (0.0–0.8) |
| Family functioning, according to mother, % pathological | 2.7 | 4.5 |
| Long-lasting difficulties, score | 1.0 (0–8) | 1.0 (0–9) |
| Self-esteem, score | 4.53 (2.9–5.0) | 4.53 (3.1–5.0) |
| Main determinants | ||
| Width of the atrium in the lateral ventricle, mm, mean (SD) | ||
| Midpregnancy | 5.9 (1.1) | 5.6 (1.2) |
| Late pregnancy | 5.4 (1.8) | 5.1 (1.7) |
| Ventricular volume, mL | 0.84 (0.15–3.24) | 0.76 (0.14–2.65) |
CI = confidence interval; SD = standard deviation.
↵* Unless otherwise indicated.