Table 1.

Questionnaire about media device (MD) usage and perception among children and adolescents.

	%	Number	9–14 Years	Number	15–18 Years	Number
Are you male or female?		10,000		4000		6000
Male	61%	6100	55%	2200	70%	4200
Female	39%	3900	45%	1800	30%	1800
Do you own a smartphone?
Yes	87%	8700	80%	3200	92%	5520
No	10%	1000	16%	640	7%	420
I use my parent’s smartphone	2%	200	3%	120	1%	60
I use my friend’s smartphone	1%	100	1%	40	0%	0
Do you own a tablet?
Yes	59%	5900	63%	2520	57%	3420
No	36%	3600	32%	1280	38%	2280
I use my parent’s tablet	4%	400	4%	160	5%	300
I use my friend’s tablet	1%	100	1%	40	0%	0
When did you receive your first electronic device?
Older than 9 years old	79%	7900	70%	2800	84%	5040
Younger than 9 years old	17%	1700	24%	960	13%	780
No answer	4%	400	6%	240	3%	180
Which was your first electronic device?
Smartphone	56%	5600	48%	1920	59%	3540
Computer	17%	1700	13%	520	20%	1200
Tablet	27%	2700	39%	1560	21%	1260