Table 1 Description of STARS participants with or without valid accelerometer data

Age (year)

13.6 ± 0.4

13.6 ± 0.4

ns

Male

41.4%

48.4%

< 0.001

Family SES

ns

 Low

25.8%

28.9%

 Medium

59.6%

57.9%

 High

14.6%

13.2%

Living with both parents

74.6%

72.7%

ns

Swedish background (%)

82.6%

74.3%

< 0.001

BMI z-score

0.26 ± 0.96

0.32 ± 1.00

ns

Overweight/Obesity (%)

14.5%

17.5%

0.031

Stress

15.3 ± 6.2

15.9 ± 6.1

0.022

 Q1 low

0–11

0–11

 Q2 medium low

12–15

12–15

 Q3 medium high

16–20

16–20

 Q4 high

21–36

21–36

Psychosomatic symptoms

11.4 ± 5.4

12.0 ± 5.9

0.012

 Q1 low

0–8

0–8

 Q2 medium low

9–11

9–11

 Q3 medium high

12–15

12–15

 Q4 high

16–32

16–32