Mediating role of television time, diet patterns, physical activity and sleep duration in the association between television in the bedroom and adiposity in 10 year-old children

Table 2 Comparison of percent body fat and lifestyle behaviours between those with and without a bedroom TV among Canadian boys and girls

	Boys			Girls
	TV in the bedroom	No TV in the bedroom	p-value^a	TV in the bedroom	No TV in the bedroom	p-value^a
	(n = 39)	(n = 200)		(n = 50)	(n = 278)	p-value^a
Percent body fat (mean, SD)	21.8 (9.7)	18.1 (6.5)	0.04	24.9 (7.3)	21.3 (7.2)	0.002
TV viewing time [hours/day category; median (IQR)] ^b	3.7 (2.4)	2.9 (1.7)	<0.001	4.0 (2.1)	2.7 (1.9)	<0.0001
≤2 h of screen time/day (n, %)	2 (5.1)	45 (22.5)	0.01	5 (10.0)	88 (31.7)	0.002
>2 h of screen time/day (n, %)	37 (94.9)	155 (77.5)	0.01	45 (90.0)	190 (68.4)	0.002
Healthy diet score (mean, SD)	−0.38 (1.0)	0.04 (0.99)	0.02	−0.28 (0.96)	0.08 (1.0)	0.02
Unhealthy diet score (mean, SD)	0.76 (1.6)	0.06 (1.1)	0.01	0.18 (0.92)	−0.18 (0.76)	0.002
Minutes of MVPA per day (mean, SD)	54.1 (17.1)	59.5 (18.3)	0.11	56.2 (16.6)	59.2 (20.7)	0.36
Sleep duration (min/night; mean, SD)	528.4 (47.0)	541.8 (50.8)	0.15	554.9 (49.0)	547.4 (51.5)	0.36

^aStudent’s t-test for continuous data; Chi-square or Fisher’s exact test for categorical responses
^bTV viewing time categories: 1 = 0 h, 2 = <1 h, 3 = 1 h, 4 = 2 h, 5 = 3 h, 6 = 4 h, and 7 = 5 or more hours of TV per day
MVPA, moderate-to-vigorous physical activity; TV, television; SD, standard deviation; IQR, inter-quartile range
N = 567

ISSN: 1479-5868