School grade and sex differences in domain-specific sedentary behaviors among Japanese elementary school children: a cross-sectional study

Table 2 Sex and school-grade differences in domain-specific sedentary behavior in Japanese children, 2010 and 2014

	Males				Females				Sex				School grade				Sex × school grade
	Lower grade		Higher grade		Lower grade		Higher grade		Sex				School grade				Sex × school grade
	mean	SE	mean	SE	mean	SE	mean	SE	F	df	η²	p	F	Df	η²	p	F	df	η²	p
Weekdays, min/week
Reading or listening to music	53.0	14.9	88.6	8.2	81.7	14.2	111.1	8.9	5.27	1618	0.008	0.022	5.58	1618	0.009	0.018	0.08	1618	0.000	0.781
TV or video viewing	505.3	43.2	520.1	23.9	495.8	41.3	582.6	25.9	0.67	1618	0.001	0.415	1.62	1618	0.003	0.204	1.27	1618	0.002	0.280
TV game use	196.3	25.8	232.9	14.3	98.6	24.7	106.6	15.4	33.45	1618	0.051	0.000	0.88	1618	0.001	0.350	0.56	1618	0.001	0.454
Computer use excluding class	2.5	8.4	33.9	4.7	5.5	8.1	35.4	5.0	0.01	1618	0.000	0.908	24.48	1618	0.038	0.000	0.13	1618	0.000	0.720
Doing homework or assignments	206.5	22.2	260.2	12.2	247.3	21.2	302.0	13.3	6.18	1618	0.010	0.013	7.00	1618	0.011	0.008	0.00	1618	0.000	0.978
Car travel	26.5	7.4	32.7	4.1	49.5	7.1	29.8	4.4	3.25	1618	0.005	0.072	0.99	1618	0.002	0.320	5.57	1618	0.009	0.019
Weekends, min/week
Reading or listening to music	26.7	8.4	40.3	4.7	35.1	8.1	53.7	5.1	2.97	1618	0.005	0.085	4.21	1618	0.007	0.041	0.16	1618	0.000	0.689
TV or video viewing	292.2	27.9	306.6	15.4	301.6	26.7	367.5	16.7	2.82	1618	0.005	0.094	2.41	1618	0.004	0.121	1.55	1618	0.003	0.213
TV game use	147.0	16.8	159.8	9.30	77.1	16.1	89.2	10.1	30.93	1618	0.048	0.000	0.64	1618	0.001	0.423	0.00	1618	0.000	0.976
Computer use excluding class	3.5	5.9	26.2	3.3	5.4	5.7	20.5	3.6	0.74	1618	0.001	0.391	25.6	1618	0.040	0.000	0.19	1618	0.000	0.666
Doing homework or assignments	56.8	11.5	73.1	6.4	51.6	11.0	93.3	6.9	0.75	1618	0.001	0.386	7.37	1618	0.012	0.007	2.22	1618	0.004	0.137
Car travel	68.5	10.2	60.5	5.6	86.1	9.7	78.8	6.1	5.55	1618	0.009	0.019	0.66	1618	0.001	0.417	0.00	1618	0.000	0.965

Adjusted for z-scores of BMI, number of days with moderate to vigorous physical activity (MVPA) for at least 60 min, and geographic area
SE standard error

ISSN: 1471-2458