Table 2.

Pearson correlation coefficients between study variables in boys.¹

		1	2	3	4	5	6	7	8	9	10	11	12	13	14
1	Self-esteem11	-	0.30 ***	0.03	0.01	−0.09	−0.05	0.04	0.14 *	0.36 ***	0.15 *	0.31 ***	0.09	0.10	0.02
2	Self-esteem13		-	0.07	−0.06	−0.10	−0.16 *	0.10	0.04	0.22 ***	0.25 ***	0.28 ***	0.38 ***	0.00	0.08
3	Watching TV11			-	0.44 ***	0.32 ***	0.21 ***	−0.05	−0.02	−0.03	−0.00	0.04	0.07	0.11	0.10
4	Watching TV13				-	0.16 *	0.25 ***	−0.04	0.06	−0.11	−0.07	−0.04	−0.05	0.21 ***	0.28 ***
5	Other screen time11					-	0.51 ***	−0.04	−0.08	−0.12	−0.15 **	−0.11	−0.10	−0.05	−0.03
6	Other screen time13						-	−0.13	−0.04	−0.02	−0.12	0.05	−0.10	0.00	0.04
7	Physical activity11							-	0.30 ***	−0.00	0.14 *	0.14 *	0.18 **	−0.08	−0.07
8	Physical activity13								-	0.10	0.09	0.05	0.14 *	−0.06	−0.01
9	Satisfaction with family relationship11									-	0.37 ***	0.33 ***	0.23 ***	−0.11	−0.11 *
10	Satisfaction with family relationship13										-	0.34 ***	0.36 ***	0.08	0.06
11	Satisfaction with friends relationship11											-	0.41 ***	0.01	0.07
12	Satisfaction with friends relationship13												-	0.00	0.04
13	BMI11													-	0.85 ***
14	BMI13														-

* p < 0.05, ** p < 0.01, *** p < 0.001; Abbreviations: TV: Television, BMI: Body mass index; ¹ the subscript numbers indicate the age of the children (11 or 13 years); respective row labels also identify corresponding column header; all variables other than BMI are child-reported.