Sleep and mental health in childhood: a multi-method study in the general pediatric population

Table 4 Associations of mental health problems and the 24 h activity rhythm, measured by actigraphy

24 h activity rhythm	Model	ß	SE	p-value	ß	SE	p-value
24 h activity rhythm	Model	10–11 years			13–14 years
		Internalizing problems
Interdaily stability	1	− 0.012	0.030	0.693	0.032	0.050	0.527
Interdaily stability	2	− 0.007	0.032	0.835	− 0.003	0.051	0.946
Intradaily variability	1	0.076	0.033	0.020	0.077	0.061	0.206
Intradaily variability	2	0.079	0.034	0.022	0.070	0.063	0.266
Onset least active 5 h	1	− 0.059	0.033	0.078	− 0.035	0.055	0.526
Onset least active 5 h	2	− 0.054	0.035	0.120	− 0.019	0.056	0.735
		Externalizing problems
Interdaily stability	1	0.024	0.032	0.446	0.048	0.059	0.415
Interdaily stability	2	0.033	0.033	0.305	0.029	0.059	0.631
Intradaily variability	1	0.022	0.035	0.533	0.003	0.071	0.969
Intradaily variability	2	0.016	0.036	0.661	− 0.008	0.072	0.913
Onset least active 5 h	1	− 0.001	0.035	0.967	− 0.056	0.064	0.386
Onset least active 5 h	2	0.002	0.036	0.951	− 0.051	0.065	0.432
		Dysregulation profile
Interdaily stability	1	0.025	0.031	0.424	0.051	0.052	0.324
Interdaily stability	2	0.040	0.033	0.229	0.027	0.053	0.610
Intradaily variability	1	0.106	0.034	0.002*	0.085	0.063	0.177
Intradaily variability	2	0.109	0.036	0.002*	0.080	0.064	0.215
Onset least active 5 h	1	− 0.039	0.035	0.269	− 0.055	0.057	0.336
Onset least active 5 h	2	− 0.028	0.037	0.446	− 0.047	0.058	0.415

Sleep characteristics and behavioral measurements were standardized to a mean of 0 and SD 1, ß coefficients represent change in SD
Model 1 is corrected for age at actigraphy measurement, age at behavioral measurement and sex, model 2 is additionally corrected for gestational age at birth, child national origin, maternal education and maternal psychopathology
*Significant after FDR-BH correction for multiple testing

ISSN: 1753-2000