Table 1.

Fixed effects parameter estimates of final model for children’s mean motion across the course of a study.

parameter	β	Lower 95% CI	Upper 95% CI	SE	df	t	p
Intercept	0.04895	0.01800	0.07990	0.01584	509	3.090	0.002
Prior functional segment scan time	0.00147	−0.00170	0.00464	0.00162	509	0.904	0.366
Prior session scan time	0.01564	0.00307	0.02821	0.00644	509	2.430	0.015
Prior day scan time	0.00212	−0.00043	0.00467	0.00130	509	1.627	0.104
Scanner training date	0.00560	−0.01790	0.02909	0.01203	509	0.465	0.642
Age × prior session scan time	−0.00121	−0.00245	0.00003	0.00063	509	−1.905	0.057
Age × prior study scan time	0.00016	0.00005	0.00028	0.00006	509	2.721	0.007

Note: CI = confidence interval, SE = standard error, df = degrees of freedom.