Table 1 Descriptive statistics of all variables used in the subsequent analyses for participants by gender

Age (years)

10.0

0.6

10.1

0.6

-0.04

-0.14 to 0.06

0.445

BMI (kg/m²)

18.5

3.2

18.6

3.4

-0.07

-0.68 to 0.54

0.819

BMI z-score*

0.7

1.1

0.4

1.2

0.3

0.05 to 0.47

0.016

IMD score (high is more deprived)^†

20.5

17.1

19.8

17.8

0.8

-2.46 to 4.03

0.634

Distance to school (miles)^††

0.58

0.68

0.58

0.58

0.008

-0.11 to 0.12

0.894

Physical activity

 Weekdays

603.3

166.9

507.1

121.2

96.1

70.00 to 122.28

<0.001

68.6

26.1

53.0

16.1

15.7

11.81 to 19.50

<0.001

 After school weekdays**

620.6

380.3

549.2

292.4

71.4

10.35 to 132.42

0.022

14.3

9.0

11.6

5.8

2.6

1.28 to 3.98

<0.001

Parental support for PA

n = 190/186^‡

n = 249/ 237^‡

  Maternal modelling

2.9

0.8

2.9

0.7

0.02

-0.12 to 0.16

0.786

  Maternal logistic support

3.3

0.7

3.2

0.7

0.06

-0.07 to 0.19

0.389

  Paternal modelling^‡

3.2

0.8

3.1

0.8

0.2

0.003 to 0.29

0.045

  Paternal logistic support^‡

3.3

0.8

3.0

0.9

0.3

0.13 to 0.44

<0.001

Boys

Girls

Travel to school (n = 469)

n

%

n

%

OR

95% CI

p

  Passive (reference group)

63

31.3

96

35.8

0.82

0.55 to 1.20

0.311

138

68.7

172

64.2

Travel home (n = 469)

  Passive (reference group)

60

29.9

113

42.2

0.58

0.40 to 0.86

0.006

141

70.2

155

57.8