Linear Regression (adjusted for covariates)	n	RC	P value	n	RC	P value	n	RC	P value
MVPA duration (min)	1076	0.32	<0.001	127	0.20	0.24	949	0.34	<0.001
MVPA fragmentation (α)	1075	0.20	0.001	127	0.04	0.84	948	0.22	0.001
VPA duration (min)	1076	0.23	<0.001	127	0.27	0.03	949	0.23	<0.001
SB duration (min)	1076	0.11	<0.001	127	0.10	0.07	949	0.12	0.001
SB fragmentation (α)	1076	0.08	<0.001	127	0.13	0.01	949	0.08	<0.001

Covariates in adjusted linear regression models include parent and child age and sex, and Disadvantage Index. MVPA fragmentation could not be calculated for participants with no MVPA.
CC, correlation coefficient; MVPA, moderate-to-vigorous physical activity; n: sample size; RC, estimated regression coefficient; SB, sedentary behaviours; VPA, vigorous physical activity.