Table 4 Total Impact score according to weekly hours of physical activity. Percentage (p%) with high score* and odds ratio (OR) for high score* at age 18–19 years according to hours of physical activity per week at age 15–16 years, in boys and girls–unadjusted (crude) and adjusted for confounders and mental health at baseline.

79

22.8

ref.

ref.

139

36.7

ref.

ref.

423

17.3

0.71

0.39 – 1.27

0.79

0.42 – 1.49

775

28.8

0.67

0.46 – 0.98

0.82

0.53 – 1.24

262

10.3

0.39

0.20 – 0.75

0.51

0.25 – 1.04

232

24.6

0.56

0.36 – 0.89

0.76

0.45 – 1.27

304

17.1

0.70

0.38 – 1.28

0.84

0.44 – 1.64

155

29.7

0.73

0.45 – 1.19

1.05

0.61 – 1.81