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Table 2 Differences between nonrespondents and weighted/unweighted respondents for selected MoMo baseline variables

From: Longitudinal drop-out and weighting against its bias

All participants

Variable

Whole sample (baseline weight)

Wave 1 nonresp. (baseline weight)

Wave 1 respondents (baseline weight)

Wave 1

respondents

(longitudinal weight)

Sex [%]

Male

51.3%

53.6%

46.4%

51.2%

Female

48.7%

49.5%

50.5%

48.8%

Age [years]

11.3 ± 4.1

12.0 ± 4.0

10.8 ± 4.1

11.3 ± 4.1

Socioeconomic status (Winkler index)

Low

33.7%

46.1%

25.1%

32.9%

Med

43.9%

39.6%

48.3%

44.8%

High

20.9%

14.3%

26.6%

21.6%

Mig. Background

16.6%

23.1%

11.4%

15.6%

Sport interest (1: very low, 5: very high)

3.81 ± 1.09

3.76 ± 1.13

3.86 ± 1.05

3.85 ± 1.06

4–5 years

BMI

15.7 ± 1.8

15.7 ± 2.0

15.7 ± 1.6

15.8 ± 1.8

Standing long jump [cm]

88.6 ± 20.2

85.7 ± 20.1

90.4 ± 20.1

89.9 ± 19.6

Days per week with a minimum of 60 min MVPA

4.9 ± 2.1

4.8 ± 2.2

4.9 ± 1.9

4.9 ± 2.0

Sport club membership

46.8%

32.2%

55.6%

49.5%

Balancing backwards

12.7 ± 8.5

11.3 ± 8.2

13.5 ± 8.6

13.1 ± 8.5

Jumping side to side

10.1 ± 3.8

9.5 ± 3.7

10.4 ± 3.8

10.4 ± 3.8

6–10 years

BMI

17.0 ± 2.7

17.3 ± 3.0

16.8 ± 2.5

17.0 ± 2.8

Standing long jump [cm]

124.9 ± 21.2

123.8 ± 22.0

125.6 ± 20.7

125.2 ± 20.7

Days per week with a minimum of 60 min MVPA

4.4 ± 2.0

4.3 ± 2.1

4.4 ± 2.0

4.4 ± 2.0

Sport club membership

58.7%

49.1%

63.8%

59.6%

Balancing backwards

27.3 ± 10.1

27.1 ± 10.5

27.4 ± 9.9

27.3 ± 9.8

Jumping side to side

20.6 ± 6.7

20.6 ± 6.7

20.5 ± 6.7

20.5 ± 6.7

11–13 years

BMI

19.7 ± 4.0

20.2 ± 4.6

19.3 ± 3.2

19.6 ± 3.5

Standing long jump [cm]

153.2 ± 24.0

150.6 ± 24.4

155.9 ± 23.3

154.5 ± 23.3

Days per week with a minimum of 60 min MVPA

3.6 ± 1.9

3.6 ± 2.0

3.7 ± 1.8

3.7 ± 1.9

Sport club membership

56.9%

47.0%

66.8%

62.1%

Balancing backwards

33.0 ± 9.4

31.4 ± 9.7

34.6 ± 8.8

34.0 ± 9.1

Jumping side to side

32.0 ± 6.1

31.4 ± 6.7

32.5 ± 5.5

32.4 ± 5.7

14–17 years

BMI

21.9 ± 4.0

22.1 ± 4.1

21.6 ± 3.8

21.9 ± 4.5

Standing long jump [cm]

173.4 ± 34.8

172.2 ± 35.6

174.7 ± 33.8

173.6 ± 34.4

Days per week with a minimum of 60 min MVPA

3.3 ± 1.8

3.3 ± 1.9

3.3 ± 1.8

3.3 ± 1.8

Sport club membership

48.8%

45.8%

52.0%

46.6%

Balancing backwards

34.2 ± 9.2

33.8 ± 9.2

34.7 ± 9.2

34.4 ± 9.3

Jumping side to side

35.2 ± 6.5

34.8 ± 6.6

35.7 ± 6.4

35.3 ± 6.8