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Table 1 Baseline values (mean ± standard deviation or percentages) of demographics, participation in behavior and mediator scores for the total sample, and the control and intervention group separately

From: Mediators of the effect of the JUMP-in intervention on physical activity and sedentary behavior in Dutch primary schoolchildren from disadvantaged neighborhoods

Study characteristics baseline Total Control Intervention
  N=600 N=341 N=259
Demographics    
Age 9.8±0.7 9.8±0.8 9.9±0.7
Gender (%girls) 51% 50% 53%
Ethnicity    
Dutch (%) 13% 16% 9%
Moroccan (%) 37% 36% 39%
Turkish (%) 19% 14% 25%
Surinam/ Antillean (%) 12% 15% 8%
Other, western (%) 6% 8% 5%
Other, non-western (%) 13% 12% 15%
BMI (mean ± SD) 19.0±3.6 18.8±3.6 19.2±3.6
% overweight 35% 34% 36%
% obese 13% 14% 11%
Behaviors    
Sports participation (% yes) 41% 45% 35%*
Outdoor play (times/week) 4.1±1.7 4.1±1.7 4.1±1.7
Screen behaviors    
TV viewing (times/week) 10.1±5.2 9.8±5.3 10.3±5.1
Computer use (times/week) 5.4±5.1 5.4±5.1 5.5±5.0
Mediators- sports    
Pros [−2,2] 1.2±0.5 0.2±0.5 1.2±0.5
Cons [−2,2] -.5±0.7 −0.5±0.7 −0.5±0.7
Social modeling [0,4] 2.3±1.1 2.2±1.1 2.3±1.2
Social pressure [−2,2] 0.8±1.1 0.9±1.1 0.8±1.2
Social norm [−2,2] 1.3±0.7 1.3±0.8 1.4±0.7
Social support [0,4] 1.8±1.0 1.8±1.1 1.9±1.0
Self-efficacy [−2,2] 0.0±0.8 −0.0±0.8 0.1±0.8
Sport competence [−2,2] 0.7±0.7 0.7±0.7 0.8±0.7
Perceived Barriers [−2,2] −0.9±0.8 −0.8±0.8 −0.9±0.8
Intention [−2,2] 0.9±1.0 0.9±1.0 1.0±1.0
Planning skills [−2,2] 0.8±0.8 0.8±0.8 0.9±0.7
Habit strength [−2,2] 0.8±0.9 0.9±0.9 0.8±0.9
Mediators outdoor play    
Pros [−2,2] 1.2±0.7 1.2±0.7 1.2±0.7
Cons [−2,2] -.7±0.9 -.7±0.9 −0.7±0.9
Social support [0,6] 2.5±2.5 2.5±2.5 2.5±2.4
Social modeling [0,6] 2.3±2.3 1.9±2.1 1.8±2.0
Self-efficacy [−2,2] -.0±0.9 -.1±0.9 0.1±0.9*
Planning skills [−2,2] 0.9±0.8 0.9±0.8 1.0±0.8
Perceived barriers [−2,2] 1.1±0.8 1.1±0.8 1.1±0.8
Enjoyment [0,10] 9.0±1.9 9.0±1.9 9.0±1.9
Habit strength [−2,2] 0.9±0.8 0.9±0.8 0.9±0.9
Mediators sedentary behavior    
TV in bedroom (%yes) 52% 50% 54%
# TVs at home 2.3±1.3 2.3±1.3 2.3±1.3
Enjoyment watching TV 7.6±2.5 7.5±2.6 7.7±2.4
Having parental TV rules (%yes) 30% 31% 28%
Computer in bedroom (%yes) 68% 66% 70%
Enjoyment computer use 7.9±2.5 7.8±2.7 8.1±2.3
  1. * p<0.05 intervention group significantly lower than control group.