Study children characteristics, N=2048 children
| Characteristic | Unit or category | Number with data | N (%); mean (SD) or median (IQR) |
|---|---|---|---|
| Required accelerometer data provided | 2048 | ||
| (3 days) | n (%) yes | 1629 (79.5) | |
| n (%) no | 419 (20.5) | ||
| Requested accelerometer data provided | 2048 | ||
| (5 days) | n (%) yes | 817 (39.9) | |
| n (%) no | 1231 (60.1) | ||
| Accelerometer returned | 2048 | ||
| n (%) yes | 2016 (98.4) | ||
| n (%) no | 32 (1.6) | ||
| Number of days of valid data | Mean (SD) days | 2048 | 3.7 (1.5) |
| Gender | 2048 | ||
| n (%) male | 999 (48.8) | ||
| n (%) female | 1049 (51.2) | ||
| Age | Mean (SD) months | 2047 | 113.6 (4.0) |
| Deprivation (individual level) | 2042 | ||
| n (%) low deprivation | 687 (33.6) | ||
| n (%) mid deprivation | 681 (33.4) | ||
| n (%) high deprivation | 674 (33.0) | ||
| BMI | Mean (SD) kg/m2 | 1787 | 17.7 (2.9) |
| Overweight/obese | 1786 | ||
| n (%) normal weight | 1418 (79.4) | ||
| n (%) overweight | 277 (15.5) | ||
| n (%) obese | 91 (5.1) | ||
| Waist circumference | Mean (SD) cm | 1905 | 62.1 (8.0) |
| Self-report screen time per day | |||
| Weekday all screen | Median (IQR) min | 2038 | 105 (45–225) |
| Saturday all screen | Median (IQR) min | 2032 | 105 (30–240) |
| Self-report recreation time per day | |||
| Weekday outdoor play | Median (IQR) min | 2039 | 30 (0–90) |
| Weekday classes/clubs | n (%) some time | 2039 | 704 (35) |
| Saturday outdoor play | Median (IQR) min | 2032 | 60 (15–120) |
| Saturday classes/clubs | n (%) some time | 2032 | 450 (22) |
| Self-efficacy for physical activity | Mean (SD) mean score on scale 1–5* | 2038 | 3.9 (0.7) |
| Perceived physical environment | |||
| Positive environment | Mean (SD) mean score on scale 1–5* | 2032 | 4.0 (0.9) |
| Negative environment | Mean (SD) mean score on scale 1–5* | 2031 | 2.2 (1.1) |
| Paternal factors | |||
| Modelling physical activity | Mean (SD) mean score on scale 1–4† | 1887 | 3.0 (0.8) |
| Logistic support for physical activity | Mean (SD) mean score on scale 1–4† | 1877 | 3.0 (0.8) |
| Limitation of sedentary activities | Mean (SD) mean score on scale 1–4† | 1877 | 2.6 (0.9) |
| Maternal factors | |||
| Modelling physical activity | Mean (SD) mean score on scale 1–4† | 1999 | 2.9 (0.8) |
| Logistic support for physical activity | Mean (SD) mean score on scale 1–4† | 1993 | 3.1 (0.8) |
| Limitation of sedentary activities | Mean (SD) mean score on scale 1–4† | 1995 | 2.8 (0.9) |
*Scale 1–5 where 1=low, 5=high.
†Scale 1–4 where 1=low, 4=high.
BMI, body mass index.