Table 1.

Descriptive statistics of sociodemographic factors and measures of screen time (n=699)

	% (N)
Sociodemographic factors
Child’s gender
Girls	47.6 (333)
Boys	52.4 (366)
Child’s age (years), mean (SD)	5.68 (0.54)
Maternal education
University-level degree	63.4 (409)
Less than university-level degree	36.6 (236)
Number of siblings
0	51.0 (327)
1	32.2 (207)
2	12.9 (83)
3	2.5 (16)
≥4	1.2 (8)
Full-time daycare
No	32.3 (214)
Yes	67.7 (448)
Screen time
Total screen time at 18 months (min), mean (SD), range (max-min)	32.4 (31.0), 252.9
>60 min, %	22.7 (136)
>120 min, %	2.8 (17)
Programme viewing at 5 years (min), mean (SD), range (max-min)	80.4 (36.3), 225.0
>60 min, %	66.8 (442)
>120 min, %	16.9 (112)
Electronic game-playing at 5 years (min), mean (SD), range (max-min)	33.4 (25.9), 182.1
>60 min, %	10.6 (69)
>120 min, %	2.3 (15)
Total screen time at 5 years (min), mean (SD), range (max-min)	114.1 (50.6), 321.4
>60 min, %	94.6 (615)
>120 min, %	40.2 (261)
>180 min, %	11.5 (75)