Skip to main content

Table 1 Demographic characteristics of the study population, stratified by weight status

From: Cross-sectional and longitudinal associations between physical activity, sedentary behaviour and bone stiffness index across weight status in European children and adolescents

  Main sample a Subsample b
Thin/normal weight Overweight/obese Thin/normal weight Overweight/obese
(N = 1627) (N = 381) (N = 833) (N = 204)
Age (Mean, SD) c 6.02 (1.81) 6.64 (1.66) 6.35 (1.73) 6.83 (1.63)
Sex (N, %) c
 Boys 911 (83.8) 176 (16.2) 435 (83.2) 88 (16.8)
 Girls 716 (77.7) 205 (22.3) 398 (77.4) 116 (22.6)
Family socio-economic status (N, %) c
 Low 142 (68.3) 66 (31.7) 69 (70.4) 29 (29.6)
 Medium 893 (79.0) 238 (21.0) 500 (80.0) 125 (20.0)
 High 592 (88.5) 77 (11.5) 264 (84.1) 50 (15.9)
Pubertal status (N, %) d
 Pre or early pubertal 343 (78.3) 95 (21.7) 174 (78.7) 47 (21.3)
 Pubertal 180 (64.8) 98 (35.4) 128 (72.3) 49 (27.7)
Country (N, %) c
 Belgium 278 (93.0) 21 (7.0) 68 (93.1) 5 (6.9)
 Estonia 274 (84.3) 51 (15.7) 183 (89.3) 22 (10.7)
 Germany 472 (85.2) 82 (14.8) 310 (85.4) 53 (14.6)
 Hungary 112 (88.9) 14 (11.1) 45 (83.3) 9 (16.7)
 Italy 259 (60.7) 168 (39.3) 85 (52.5) 77 (47.5)
 Spain 116 (81.1) 27 (18.9) 124 (78.5) 34 (21.5)
 Sweden 116 (86.6) 18 (13.4) 18 (81.8) 4 (18.2)
  1. aMain sample included participants with full information of self-reported physical activity and sedentary behaviour as well as co-variables. bSubsample included the participants with full information of accelerometer data as well as co-variables. cData from baseline survey; dData from six-year follow-up survey