Table 1 Characteristics of the study population, N = 1348
From: Accelerometer data reduction in adolescents: effects on sample retention and bias
| Â | Girls | Boys |
|---|---|---|
Sex, % (n = 1348) | 48.4 | 51.6 |
Age, mean y (SD) (n = 1348) | 12.4 (0.62) | 12.5 (0.63) |
BMI, mean kg/m2 (SD) (n = 1266) | 18.9 (3.04) | 18.8 (2.99) |
Weight status (BMI thresholds)* (n = 1266) |  |  |
Under-/normal weight | 85.5 | 85.5 |
Overweight/obese | 14.6 | 14.5 |
Self-reported PA in leisure time % (n = 1313)** | 638 (48.6) | 675 (51.4) |
Performs sports several times a week. Hard exercise | 37.2 | 53.3 |
Doing sport approx. once a week, and besides that physical active every day, cycling, walking, playing | 35.3 | 19.4 |
Enjoy being physical active, but do not attend any sport clubs. Cycle, walk and are physical active when playing | 24.1 | 19.1 |
Prefer to watch TV, play video games, listening to music or other sedentary behaviour | 3.5 | 8.2 |
Self-reported sedentary leisure time (n = 1313)** |  |  |
4 + hours daily sedentary time (watching TV, playing computer games, reading etc.) in leisure time in weekdays and weekend days, % | 58.2 | 67.2 |