. Author manuscript; available in PMC: 2018 Jul 1.

Published in final edited form as: J Sch Health. 2017 Jul;87(7):531–537. doi: 10.1111/josh.12523

Table 2.

Final Growth Curve Models Examining Changes in Boys’ MVPA and TPA in Different Time-periods across Grades 5 to 7, Coefficients (SE), N = 356

	School MVPA	Afterschool MVPA	Evening MVPA	School TPA	Afterschool TPA	Evening TPA
Intercept	2.63 (0.19)^***	3.44 (0.33)^***	3.93 (0.48)^***	24.64 (0.59)^***	31.53 (0.58)^***	29.36 (0.82)^***
Time	−0.69 (0.18)^**	0.52 (0.34)	0.33 (0.29)	−4.70 (0.57)^***	−1.35 (0.40)^**	−3.63 (1.12)^**
Time*Time	0.24 (0.08)^**			0.95 (0.26)^**		1.12 (0.55)^**

Variance components (random effects: slope)

Within-children	1.27 (0.01)^***	15.03 (0.86)^***	16.55 (1.22)^***	13.99 (1.12)^***	38.62 (3.25)^***	42.45 (4.38)^***
Between-children	0.15 (0.08)^**	9.60 (1.42)^***	11.17 (2.13)^***	1.34 (0.89)^***	11.16 (3.10)^**	8.12 (3.85)^**
Between-schools	0.11 (0.05)^**	1.03 (0.59)^**	0	0.75 (0.43)^**	0.97 (0.87)	0.39 (0.65)
Goodness-of-fit
Deviance	3353.2	5488.5	4394.1	5876.2	6269.6	4951.96
AIC	3379.2	5508.5	4414.1	5902.2	6293.6	4977.9
BIC	3392.1	5518.4	4424.0	5915.2	6305.6	4990.8

Note.

MVPA=moderate-to-vigorous physical activity; TPA=total physical activity

All models adjusted for race and parent education as fixed effects.

^**

p < .05,

^***

p < .0001.