Table 2.

Descriptive statistics of continuous variables (median, Q1 and Q3) with comparison by region using Kruskal-Wallis

		Median (Q1, Q3)
	City of Zagreb	Adriatic region	Northern region	Pannonian region	Total sample	p-value
Total (n)	1138	1787	1129	1383	5438
Age (years)	9.02 (8.48, 9.56)	9.02 (8.49, 9.51)	9.07 (8.56, 9.54)	9.06 (8.54, 9.52)	9.04 (8.51, 9.53)	0.022
Active play, weekdays (h)	1.81 (1.00, 2.00)	2.00 (1.00, 2.50)	1.50 (1.00, 2.00)	2.00 (1.00, 2.50)	2.00 (1.00, 2.50)	< 0.001
Active play, weekends (h)	3.00 (2.00, 4.00)	4.00 (2.50, 5.00)	3.00 (2.00, 4.00)	3.00 (2.00, 5.00)	3.00 (2.00, 4.50)	< 0.001
Screen time, weekdays (h)	1.00 (1.00, 2.00)	1.00 (1.00, 2.00)	1.50 (1.00, 2.00)	1.50 (1.00, 2.00)	1.00 (1.00, 2.00)	< 0.001
Screen time, weekends (h)	2.00 (2.00, 3.00)	2.00 (1.50, 3.00)	2.50 (2.00, 3.00)	2.50 (2.00, 3.00)	2.00 (2.00, 3.00)	< 0.001
Time spent learning (h)	1.28 (1.00, 1.93)	1.57 (1.00, 2.00)	1.72 (1.22, 2.14)	1.72 (1.10, 2.00)	1.57 (1.00, 2.00)	< 0.001
Sleep duration (h)	9.75 (9.50, 10.10)	10.00 (9.50, 10.25)	9.88 (9.50, 10.25)	10.00 (9.50, 10.25)	9.92 (9.50, 10.25)	< 0.001