Table 4 Data collected for proposed outcome data

Accelerometer outcomes

n = 126, median (IQR)

n = 64, median (IQR)

n = 126, median (IQR)

n = 64, median (IQR)

n = 126, median (IQR)

n = 64, median (IQR)

 MVPA (min/day)

33.3 (23.6–49.0)

43.6 (31.0–69.3)

33.0 (20.0–46.2)

47.4 (32.7–65.1)

33.4 (19.2–49.2)

37.2 (26.5–53.1)

 Light intensity PA (min/day)

336.1 (232.4–435.6)

306.2 (237.0–422.6)

225.4 (175.2–283.2)

236.1 (183.2–295.1)

201.0 (167.6–256.0)

189.5 (145.6–241.8)

 Moderate intensity PA (min/day)

27.1 (18.2–37.7)

35.1 (25.2–49.8)

25.8 (17.1–33.2)

33.4 (25.4–44.2)

25.0 (16.2–34.8)

29.1 (21.7–38.6)

 Vigorous intensity PA (min/day)

6.6 (3.0–11.9)

8.6 (3.3–18.7)

6.2 (2.4–11.8)

12.2 (5.6–19.8)

5.9 (2.0–13.0)

7.4 (4.5–13.8)

 Daily sedentary time (min/day)

469.6 (416.5–524.3)

466.3 (410.0–534.9)

454.7 (405.7–517.8)

453.5 (399.8–529.6)

461.9 (400.6–519.4)

462.9 (399.2–531.3)

 Steps per day

8019 (6549.6–9738.9)

9160 (7485.5–11,975.5)

8298 (6370.5–10,641.0)

11,162 (7957.7–13,888.4)

7064 (5620.3–9440.0)

7856 (5847.1–12,473.8)

Wellbeing

n = 139, mean (SD)

n = 74, mean (SD)

n = 124, mean (SD)

n = 71, mean (SD)

n = 126, mean (SD)

n = 69, mean (SD)

 WEMWBS

51.8 (8.4)

51.9 (8.3)

50.0 (9.1)

50.1 (10.9)

51.1 (9.0)

49.3 (10.4)

Strength and difficulties

n = 134, mean (SD)

n = 22, mean (SD)

n = 133, mean (SD)

n = 35, mean (SD)

n = 132, mean (SD)

n = 81, mean (SD)

 SDQ

4.7 (5.1)

13.6 (8.1)

4.1 (5.2)

12.5 (6.9)

6.5 (5.1)

7.5 (9.0)

 Pro social sub scale

8.5 (1.5)

6.4 (2.8)

8.8 (1.8)

4.7 (2.9)

8.4 (2.0)

7.0 (2.7)

Perceived social support

n = 137, median (IQR)

n = 75, median (IQR)

n = 130, median (IQR)

n = 67, median (IQR)

n = 125, median (IQR)

n = 66, median (IQR)

 Peer support

3.3 (3.0–3.6)

3.0 (2.6–3.6)

3.0 (2.6–3.3)

3.0 (2.6–3.3)

3.0 (2.6–3.3)

3.0 (2.3–3.3)

 Parental support

2.6 (2.3–3.0)

2.8 (2.3–3.0)

2.6 (2.3–3.0)

2.6 (2.3–3.0)

2.6 (2.3–3.0)

2.6 (2.3–3.0)

 Parental encouragement

3.5 (3.0–4.0)

3.5 (3.0–4.0)

3.5 (3.0–4.0)

3.5 (3.0–4.0)

3.5 (3.0–4.0)

3.0 (2.5–4.0)

 Teacher support

2.3 (2.0–2.6)

2.3 (1.7–2.6)

2.3 (2.0–3.0)

2.3 (1.6–3.0)

2.3 (1.6–2.6)

2.0 (1.6–2.6)

Time preferences

n = 122, median (IQR)

n = 62, median (IQR)

n = 119, median (IQR)

n = 71, median (IQR)

n = 123, median (IQR)

n = 70, median (IQR)

 Planning horizon

7.0 (6.0–8.0)

7.0 (5.0–8.0)

6.0 (6.0–8.0)

6.0 (5.0–8.0)

7.0 (5.0–8.0)

7.0 (5.7–8.0)

 Impulsivity

6.0 (5.0–8.0)

6.0 (5.0–8.0)

6.0 (5.0–7.0)

5.0 (4.0–7.0)

6.0 (5.0–7.0)

6.0 (4.0–7.0)