Table 1 Baseline characteristics of the CHILD study population
Characteristic | Cases (n = 242) | Non-cases (n = 658) | All children (n = 900) |
|---|---|---|---|
Age (years) | 5.02 (0.11) | 5.04 (0.15) | 5.03 (0.14) |
Sex (female) | 107 (44%) | 301 (46%) | 408 (45%) |
Daily night sleep (hours) | 10.91 (0.72) | 11 (0.75) | 10.98 (0.74) |
Physical activity (hours/week) | 11.06 (9.28) | 10.55 (8.73) | 10.67 (8.86) |
Diet quality score | 0.21 (1.75) | 0.31 (2.1) | 0.28 (2.02) |
Maternal education (years) | 15.64 (3.24) | 16.94 (3.15) | 16.63 (3.22) |
Social disadvantage index | |||
Low 0–1 | 101(71.0%) | 351 (76.0%) | 452 (75.0%) |
Moderate 2–3 | 39 (27.0%) | 99 (21.0%) | 138 (23.0%) |
High 4–5 | 3 (2.0%) | 11 (3.0%) | 14 (2.0%) |
Screen time exposure | |||
Low exposure (< 2 h) | 112 (61%) | 368 (67%) | 480 (78%) |
High exposure (≥ 2 h) | 73 (39%) | 181 (33%) | 254 (22%) |
Systolic blood pressure (mm Hg) | 107.59 (10.04) | 100.58 (9.27) | 102.25 (9.91) |
Diastolic blood pressure (mm Hg) | 60.88 (7.04) | 57.94 (5.8) | 58.64 (6.24) |
BMI (kg/m2) | 18.0 (1.94) | 15.3 (0.90) | 16.02 (1.77) |
BMI-for-age z-score (WHO) | 1.69 (0.99) | 0.001 (0.67) | 0.45 (1.08) |
Waist circumference (cm) | 58.91 (4.44) | 50.95 (3.55) | 52.85 (5.08) |
Waist circumference z-score | 2.17 (0.99) | − 0.19 (1.19) | 0.45 (1.54) |
Waist circumference-to-height | 0.52 (0.04) | 0.46 (0.03) | 0.48 (0.04) |
Sum of skinfolds (mm) | 20.62 (5.86) | 15.24 (3.63) | 16.53 (4.84) |