|  |  | Munich (n 2075) | Leipzig (n 319) | Bad Honnef (n 161) | Wesel (n 1285) |  |
---|---|---|---|---|---|---|---|
 |  |  | % | % | % | % | p-Value* |
Physical activity a (per week) | Â | Â | Â | Â | Â | Â | |
Summer | Light | < 6 h | 30.4 | 24.8 | 24.2 | 20.4 | <.0001 |
 |  | 6-14 h | 46.3 | 44.5 | 46.6 | 41.9 |  |
 |  | > 14 h | 23.3 | 30.7 | 29.2 | 37.7 |  |
 | Moderate | < 5 h | 34.9 | 29.5 | 32.9 | 22.8 | <.0001 |
 |  | 5-9 h | 34.8 | 40.1 | 28.0 | 33.5 |  |
 |  | > 9 h | 30.2 | 30.4 | 39.1 | 43.7 |  |
 | Vigorous | < 4 h | 39.3 | 37.3 | 38.5 | 31.4 | 0.0003 |
 |  | 4-6 h | 34.4 | 35.4 | 29.8 | 37.6 |  |
 |  | > 6 h | 26.3 | 27.3 | 31.7 | 31.1 |  |
Winter | Light | < 5 h | 31.8 | 24.8 | 29.8 | 23.6 | <.0001 |
 |  | 5-11 h | 47.4 | 48.0 | 44.7 | 42.8 |  |
 |  | > 11 h | 20.8 | 27.3 | 25.5 | 33.6 |  |
 | Moderate | < 3 h | 33.0 | 26.3 | 29.8 | 21.7 | <.0001 |
 |  | 3-6 h | 42.6 | 48.9 | 41.6 | 41.0 |  |
 |  | > 6 h | 24.4 | 24.8 | 28.6 | 37.3 |  |
 | Vigorous | < 3 h | 38.0 | 26.7 | 32.3 | 28.9 | <.0001 |
 |  | 3-4 h | 32.5 | 36.4 | 29.8 | 33.9 |  |
 |  | > 4 h | 29.5 | 37.0 | 37.9 | 37.3 |  |
Biological | Â | Â | Â | Â | Â | Â | Â |
Sex | Â | Boys | 52.3 | 52.4 | 50.9 | 51.5 | 0.9593 |
BMI b | Â | Underweight | 9.9 | 6.6 | 7.1 | 7.4 | <.0001 |
 |  | Normal weight | 83.4 | 86.6 | 78.7 | 80.0 |  |
 |  | Overweight | 4.9 | 4.9 | 10.3 | 9.3 |  |
 |  | Obese | 1.8 | 2.0 | 3.9 | 3.3 |  |
Start of puberty | Â | Yes | 30.3 | 34.7 | 31.5 | 27.7 | 0.0784 |
Siblings | Â | Yes | 86.6 | 82.8 | 89.4 | 91.1 | <.0001 |
Parental BMI c | Mother | Underweight | 3.1 | 2.4 | 3.9 | 1.5 | <.0001 |
 |  | Normal weight | 72.9 | 65.8 | 64.7 | 67.1 |  |
 |  | Overweight | 17.4 | 22.4 | 21.6 | 22.3 |  |
 |  | Obese | 6.7 | 9.5 | 9.8 | 9.2 |  |
 | Father | Underweight | 0.3 | 0.0 | 0.0 | 0.2 | <.0001 |
 |  | Normal weight | 47.5 | 45.0 | 43.2 | 37.1 |  |
 |  | Overweight | 43.9 | 43.5 | 45.3 | 47.7 |  |
 |  | Obese | 8.3 | 11.4 | 11.5 | 15.0 |  |
Social | Â | Â | Â | Â | Â | Â | |
Paternal education d | Low | 3.7 | 1.3 | 3.8 | 11.0 | <.0001 | |
 |  | Middle | 17.2 | 36.6 | 21.9 | 37.9 |  |
 |  | High | 79.2 | 62.2 | 74.4 | 51.1 |  |
Household income e | Low | 6.7 | 4.6 | 5.7 | 6.4 | 0.0667 | |
 |  | Middle | 23.4 | 22.0 | 31.2 | 20.5 |  |
 |  | High | 69.9 | 73.4 | 63.1 | 73.0 |  |
Behavioral | Â | Â | Â | Â | Â | Â | Â |
TV/PC (per day) | Summer | < 1 h | 74.9 | 64.3 | 67.9 | 57.9 | <.0001 |
 |  | 1-2 h | 23.9 | 32.6 | 29.6 | 40.3 |  |
 |  | > 2 h | 1.2 | 3.1 | 2.5 | 1.9 |  |
 | Winter | < 1 h | 43.7 | 30.9 | 22.6 | 16.4 | <.0001 |
 |  | 1-2 h | 50.1 | 53.6 | 66.7 | 66.0 |  |
 |  | > 2 h | 6.3 | 15.5 | 10.7 | 17.6 |  |
Method of arriving school f | Active | 67.9 | 47.3 | 50.6 | 68.5 | <.0001 | |
 |  | Passive | 25.1 | 43.9 | 38.1 | 23.2 |  |
 |  | Mixed | 7.0 | 8.8 | 11.3 | 8.3 |  |
Membership of a sports club | Yes | 85.9 | 76.3 | 89.4 | 85.6 | <.0001 | |
Time Outdoors (h per day) | Â | Â | Â | Â | Â | Â | |
 | Summer | < 3 h | 15.8 | 13.9 | 5.6 | 4.7 | <.0001 |
 |  | 3-5 h | 70.9 | 70.0 | 67.5 | 64.0 |  |
 |  | > 5 h | 13.3 | 16.1 | 26.9 | 31.3 |  |
 | Winter | < 2 h | 36.4 | 31.0 | 28.3 | 20.5 | <.0001 |
 |  | 2-3 h | 57.9 | 60.2 | 63.5 | 64.8 |  |
 |  | > 3 h | 5.7 | 8.8 | 8.2 | 14.7 |  |
Psychological | Â | Â | Â | Â | Â | Â | |
Emotional Symptoms g | Normal | 82.6 | 82.7 | 85.4 | 82.7 | 0.4985 | |
 |  | Borderline | 6.9 | 8.2 | 5.7 | 8.4 |  |
 |  | Abnormal | 10.5 | 9.2 | 8.9 | 9.0 |  |