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Table 1 Descriptive data for the study population: children (3–9 years) and adolescents (10–17 years), Belgium 2014–2015

From: Physical activity and sedentary behavior in Belgium (BNFCS2014): design, methods and expected outcomes

Characteristics

Valid data

Excluded

Children

(n = 676)

Adolescents

(n = 573)

Children

(n = 387)

Adolescents

(n = 391)

Gender

 Males

50.7 %

49.2 %

53.0 %

48.1 %

 Females

49.3 %

50.8 %

47.0 %

51.9 %

Family education levela

  

*(P < 0.0001)

*(P = 0.02)

 No, primary or secondary school

30.2 %

36.8 %

43.9 %

46.8 %

 Higher school short type

34.5 %

29.3 %

25.3 %

25.1 %

 Higher school long type

34.0 %

31.4 %

28.4 %

26.3 %

BMIb

 Underweight

8.7 %

9.6 %

8.3 %

9.7 %

 Normal

77.8 %

72.8 %

73.6 %

70.1 %

 Overweight

10.4 %

12.4 %

13.4 %

15.1 %

 Obese

3.1 %

4.9 %

4.7 %

4.4 %

Average age (years)

6.68 (±1.96)

14.01 (±2.35)

6.30 (±1.96)**

14.20 (±2.25)

Average number of valid days

6.30 (±1.01)

6.16 (±1.09)

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  1. aFamily education level (i.e., the highest education level of the parents) was not available for 1.3 % of the children and 2.4 % of the adolescents with valid data, as well as for 2.3 % of the children and 0.8 % of the adolescents excluded
  2. bBMI (Body Mass Index) was not available for 0.4 % of the adolescents with valid data and for 0.8 % of the adolescents excluded
  3. *Significantly (P < 0.05) different from children/adolescents with valid data, based on chi-square tests; **Significantly (P < 0.05) different from children with valid data, based on a t-test