Table 3 Behavioural effects from T1 to T2 by change/no change of school and sex

Average daily (mins) MVPA (accelerometer)¹

−3

−4

0.8

−3.7, 5.3

−1.8

−6.5, 2.9

Average daily (mins) light PA (accelerometer)¹

−20

−27

2.1

−8.3, 12.4

−9.5

−20.2, 1.1

Average daily (mins) after school being very active (self-report)

12

9

2.0

−15.4, 19.4

−15.3

−32.3, 1.8

Average daily (mins) weekend being very active (self-report)

−10

14

−23.2

−50.8, 4.4

24.3

−2.9, 51.4

Frequency being very active in PE class (1: No PE, to 5: Always)

0.6

0.7

0.1

−0.1, 0.4

0.0

−0.3, 0.2

Do most of the time at recess (1: Sit down, to 5: Run/play hard)

1.5

1.0

−1.0

*

−1.4, −0.6

0.2

−0.2, 0.6

Do most of the time at lunch (1: Sit down, to 5: Run/play hard)

1.5

1.2

−0.9

*

−1.2, −0.5

0.2

−0.2, 0.6

School encourages organised sport participation (0: Not at all, to 3: A lot)

0.8

0.8

0.4

*

0.1, 0.6

0.3

*

0.0, 0.5

School encourages physical activity at lunchtime (0: Not at all, to 3: A lot)

1.0

0.9

−0.1

−0.4, 0.2

−0.3

*

−0.6, −0.0

Teachers as physically active role models (1: Very poor, to 5: Very good)

0.8

0.8

0.4

*

0.2, 0.7

−0.1

−0.4, 0.1

Average daily (mins) sedentary (accelerometer)¹

19

11

0.7

−12.3, 13.7

8.8

−4.5, 22.1

Average daily (mins) weekday leisure screen time (self-report)

32

−9

41.9

*

9.3, 74.4

24.8

−7.5, 57.1

Average daily (mins) weekend leisure screen time (self-report)

33

−13

45.9

*

3.5, 88.3

48.5

*

6.8, 90.2

Average daily (mins) weekday homework screen time (self-report)

26

23

3.5

−14.0, 21.0

0.3

−16.9, 17.5

Average daily (mins) weekend homework screen time (self-report)

14

9

4.7

−7.7, 17.2

−3.1

−15.4, 9.2

IRR

95% CI

IRR

95% CI

Walk to/from school (0–10 times/week)

0.1

0.0

1.1

0.9, 1.2

1.2

1.0, 1.4

Cycle/scoot to/from school (0–10 times/week)

−0.7

−0.7

0.5

*

0.4, 0.8

0.6

*

0.4, 0.9

OR

95% CI

OR

95% CI

Usually watch TV/videos

0.3

0.3

2.3

0.9, 5.9

1.0

0.4, 2.5

Usually play non-active computer games

0.4

0.3

1.2

0.7, 2.1

0.5

*

0.3, 0.9

Usually use computer for leisure

0.5

0.5

1.6

0.8, 2.8

1.2

0.6, 2.2

Usually use computer for homework

0.7

0.6

0.9

0.4, 1.9

0.6

0.3, 1.4