Table 3

Summary of pupil outcome measures at three time points

Baseline (mean (SD) age=6.3 (0.3) years)Follow-up 1 (mean (SD) age=7.7 (0.3) years)Follow-up 2 (mean (SD) age=9.0 (0.3) years)
Anthropometric
Mean (SD) zBMI; missing data*0.21 (1.2); 640.32 (1.3); 2010.39 (1.3); 293
BMI group category, n (%)†
 Underweight (≤2nd centile)29 (2.3)23 (2.1)23 (2.3)
 Healthy (>2nd and <85th centiles)953 (76.9)784 (71.1)674 (66.7)
 Overweight (≥85th and <95th centiles)109 (8.8)126 (11.4)117 (11.6)
 Obese (≥95th centile)149 (12.0)170 (15.4)197 (19.5)
 Missing data*64201293
Median (IQR) zWC; missing data*0.76 (1.2); 1670.99 (1.3); 2751.1 (1.3); 416
Dietary intake
Median (IQR) dietary total energy intake (kJ/24 hours); missing data*6976.9 (5933.9–8101.8); 2127150.3 (6100.0–8279.0); 3017728.8 (6595.0–9128.9); 393
Median (IQR) fruit and vegetable intake (g/24 hours); missing data*241.8 (149.6–352.6); 212207.8 (111.5–320.2); 301219.5 (117.0–346.5); 393
≥5 portion of fruits and vegetables, n (%)
 Yes705 (64.6)502 (50.1)519 (57.0)
 No387 (35.4)501 (50.0)392 (43.0)
 Missing data*212301393
Physical activity
Mean (SD) PAEE (kJ/kg body weight/24 hours); missing data*94.8 (23.8); 34191.5 (24.5); 52179.4 (22.4); 680
Median (IQR) estimated time spent in MVPA (min/24 hours); missing data*58.1 (41.9–81.7); 34562.0 (39.8–101.9); 52343.1 (31.6–64.2); 672
  • *Missing data values are not included in the denominator.

  • †Based on UK 1990 reference centile curves and applying cut-offs used for population monitoring.

  • BMI, body mass index; MVPA, moderate-to-vigorous physical activity; PAEE, physical activity energy expenditure; zBMI, body mass index z-score; zWC, waist circumference z-score.