Sample characteristics; values are weighted mean (SD)
| Characteristic | All | Male | Female |
| Child | |||
| n | 1152–1180 | 558–575 | 594–605 |
| Age (years) | 12.0 (0.4) | 12.0 (0.4) | 12.0 (0.4) |
| BMI (kg/m2) | 19.4 (3.5) | 19.2 (3.4) | 19.6 (3.7) |
| BMI z-score | 0.38 (1.0) | 0.40 (1.0) | 0.37 (1.0) |
| Disadvantage Index | 1012 (63) | 1011 (65) | 1014 (61) |
| Fasting time (hours) | 4.2 (1.2) | 4.3 (1.3) | 4.2 (1.1) |
| Time of day - blood collection | 14.16 (2.0) | 14.12 (2.0) | 14.20 (2.1) |
| Processing lag time (hours) | 1.16 (0.5) | 1.18 (0.5) | 1.14 (0.5) |
| Parent | |||
| n | 1272–1325 | 174–177 | 1098–1148 |
| Age (years) | 43.9 (5.6) | 46.9 (6.9) | 43.4 (5.2) |
| BMI (kg/m2) | 28.4 (6.4) | 28.9 (4.7) | 28.4 (6.6) |
| Fasting time (hours) | 3.3 (1.6) | 3.6 (2.0) | 3.2 (1.5) |
| Time of day – blood collection | 13.10 (2.0) | 13.18 (2.1) | 13.09 (2.0) |
| Processing lag time (hours) | 1.26 (0.5) | 1.31 (0.5) | 1.26 (0.5) |
Values are weighted mean (SD).
Disadvantage Index is the Index of Relative Socioeconomic Disadvantage.
n, number of participants in cohort with this measure.