Table 1 Maternal, infant, and preteen characteristics of the ROLO longitudinal birth cohort study
|  | Total (n = 405) | ||
|---|---|---|---|
N | Mean/Median/n | SD/(IQR)/% | |
Maternal characteristics | |||
Age at delivery (years) | 404 | 33.17 | (30.5, 35.47) |
Early pregnancy BMI (kg/m2) | 401 | 25.46 | (23.3, 27.96) |
HP index | 405 | 7.5 | (1.1, 12.5) |
Gestational weight gain | Â | Â | Â |
Inadequate, n (%) | 333 | 52 | 15.6 |
Adequate, n (%) | 333 | 127 | 38.1 |
Excessive, n (%) | 333 | 154 | 46.2 |
Ethnicity (White Irish), n (%) | 405 | 372 | 91.9 |
Smoking in pregnancy, n (%) | 405 | 12 | 3.2 |
RCT group (intervention), n (%) | 405 | 203 | 50.1 |
Infant characteristics | |||
Child sex (male), n (%) | 405 | 203 | 50.1 |
Birthweight (kg) | 405 | 4.03 | 0.46 |
Birthweight centile | 404 | 86.32 | (72.24, 95.68) |
Gestational age at delivery (days) | 404 | 283.0 | (277.0, 288.0) |
Birthweight ≥ 4 kg, n (%) | 405 | 208 | 51.4 |
Birthweight ≥ 4.5 kg, n (%) | 405 | 65 | 16.0 |
Birthweight ≥ 90th centile, n (%) | 404 | 159 | 39.4 |
Breastfeeding exposure and duration | Â | Â | Â |
Never breastfed, n (%) | 360 | 133 | 36.9 |
Breastfed < 2 months, n (%) | 360 | 46 | 12.8 |
Breastfed ≥ 2 and < 4 months, n (%) | 360 | 39 | 10.8 |
Breastfed ≥ 4 months, n (%) | 360 | 142 | 39.4 |
Preteen characteristics | |||
Age at follow-up (years) | 405 | 9.83 | (9.24, 10.27) |
Pubic hair distribution (Tanner stage I), n (%) | 320 | 283 | 88.4 |
Breast development (Tanner stage I), n (%) | 163 | 128 | 78.5 |
Physical activity level (PAQ-C score) | 370 | 2.48 | 0.66 |