Characteristics | Completers (n = 1361) | Non-completers (n = 301) | P-valuea |
---|---|---|---|
Age, years (SD) | 12.8 (0.8) | 13.1 (0.8) | < 0.001 |
Year group categories, n (%) | |||
Year 7 | 571 (41.9) | 73 (24.2) | |
Year 8 | 544 (39.9) | 147 (48.8) | |
Year 9 | 247 (18.1) | 81 (26.9) | < 0.001 |
Ethnicity categories, n (%) | |||
White European | 1014 (74.6) | 244 (81.1) | |
South Asian | 175 (12.9) | 28 (9.3) | |
Other | 170 (12.5) | 29 (9.6) | 0.060 |
IMD decile, score (SD)b | 5.8 (2.8) | 5.8 (3.0) | 0.678 |
Biometric measurements | |||
Average standing height, cm (SD) | 155.6 (7.9) | 157.8 (7.0) | < 0.001 |
Average sitting height, cm (SD) | 81.1 (4.6) | 82.2 (4.1) | < 0.001 |
Body mass, kg (SD) | 48.1 (12.2) | 51.3 (12.7) | < 0.001 |
BMI, z-score (SD) | 0.13 (1.3) | 0.33 (1.3) | 0.021 |
APHV, years (SD) | 12.1 (0.5) | 12.1 (0.5) | 0.600 |
Accelerometer variables | |||
MVPA, mins/day [IRQ] | 42.5 [30.2-55.6] | 40.8 [30.1-60.2] | 0.598 |
Light PA, mins/day [IRQ] | 275 [246-305] | 274.9 [246-304] | 0.634 |
Sedentary, mins/day [IRQ] | 550 [511-593] | 550.7 [514-595] | 0.600 |
Valid days, number (SD) | 6.7 (0.9) | 6.5 (1.2) | < 0.001 |
Pupils achieving ≥60 mins MVPA on every valid day, n (%) | 32 (2.4) | 5 (2.0) | 0.597 |