Table 3 Multilevel model results with absolute total activity, night sleep efficiency, 24-h guideline adherence, and sex as independent variables (IV).

From: Relations between 24-h movement behaviors, declarative memory, and hippocampal volume in early childhood

Outcome	IV	Coeff.	95% CI	ICC
Memory performance
Immediate recall	24-h sleep guidelines	1.49	− 4.7, 7.6	0.37
	Sleep efficiency	0.34	− 0.25, 0.92
	Total activity counts/min	0.005	− 0.02, 0.04
	Female	7.9	− 0.44, 15.4
	Intercept	74.2
Same-day recall	24-h sleep guidelines	− 2.6	− 11.2, 6.1	0.06
	Sleep efficiency	0.46	− 0.31, 1.2
	Total activity counts/min	0.01	− 0.03, 0.06
	Female	13.7*	4.4, 22.9
	Intercept	− 23.4
Next-day recall	24-h sleep guidelines	− 6.7	− 17.1, 3.8	0.08
	Sleep efficiency	0.69	− 0.26, 1.6
	Total activity counts/min	− 0.02	− 0.07, 0.04
	Female	8.2	− 2.9, 10.3
	Intercept	− 24.1
Hippocampal volume
Total	24-h sleep guidelines	273.6*	− 168.2, 378.9	0.97
	Sleep efficiency	10.2	− 6.8, 27.2
	Total activity counts/min	− 0.46	− 0.92, − 0.002
	Female	− 136.3	− 477.3, 204.8
	Intercept	58.9
Left	24-h sleep guidelines	139.8*	34.1, 245.5	0.89
	Sleep efficiency	7.1	− 5.1, 19.4
	Total activity counts/min	− 0.11	− 0.57, 0.36
	Female	− 124.1	− 331.6, 83.5
	Intercept	2992.52
Right	24-h sleep guidelines	127.7*	63.2, 102.1	0.95
	Sleep efficiency	4.8	− 4.5, 14.1
	Total activity counts/min	− 0.34	− 0.62, − 0.05
	Female	− 4.2	− 177.5, 169.5
	Intercept	2896.54
Head	24-h sleep guidelines	203.7*	59.7, 347.7	0.88
	Sleep efficiency	6.6	− 9.5, 22.6
	Total activity counts/min	0.03	− 0.60, 0.67
	Female	− 380.7*	− 649.7, − 111.8
	Intercept	2127.6
Body	24-h sleep guidelines	− 46.2	− 152.9, 60.5	0.88
	Sleep efficiency	1.3	− 10.6, 13.2
	Total activity counts/min	107.2	− 93.1, 307.5
	Female	29.1	− 92.8, 151.0
	Intercept	202.8
Tail	24-h sleep guidelines	132.9*	44.3, 221.7	0.86
	Sleep efficiency	3.1	− 6.3, 12.6
	Total activity counts/min	− 0.14	− 0.54, 0.25
	Female	144.0	− 13.0, 301.1
	Intercept	719.3

Significant values are in [bold].
^ap < 0.016.
^bp < 0.005.

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Table 3 Multilevel model results with absolute total activity, night sleep efficiency, 24-h guideline adherence, and sex as independent variables (IV).

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