Table 4.

Levels of screen time and outdoor play in children at each time point

Variable	Time point
	12 months	18 months	24 months	36 months	42 months	48 months	54 months	60 months
Prevalence of children’s interest in screen use	F = 11,164.509	P <  0.001a
Included population number	917	866	824	717	634	606	553	497
NO	139 (15.2%)	123 (14.2%)	48 (5.8%)	16 (2.2%)	7 (1.1%)	5 (0.5%)	7 (1.3%)	12 (2.4%)
Occasionally	205 (22.4%)	263 (30.4%)	268 (32.5%)	81 (11.3%)	81 (12.8%)	74 (12.2%)	69 (12.5%)	85 (17.1%)
Sometimes				133 (18.5%)	161 (25.4%)	149 (37.6%)	110 (13.7%)	117 (23.5%)
Often	573 (62.4%)	480 (55.45%)	508 (61.7%)	292 (40.7%)	283 (44.6%)	248 (40.9%)	225 (40.7%)	217 (43.7%)
Always				195 (27.2%)	102 (16.1%)	130 (21.5%)	142 (25.7%)	66 (13.3%)
Prevalence of children’s acceptance of AAP	F = 278.488	P <  0.001a
Included population number	879	692	729	695	561	466	504	466
Not using media device	530 (60.3%)	105 (15.2%)	20 (2.7%)	8 (1.2%)	12 (2.1%)	8 (1.7%)	12 (2.4%)	17 (3.6%)
Accepting AAP recommendation	530 (60.3%)	105 (15.2%)	580 (79.6%)	506 (72.8%)	450 (80.2%)	380 (81.5%)	422 (83.7%)	371 (79.6%)
Exceeding AAP recommendation	349 (39.7%)	587 (84.8%)	149 (20.4%)	189 (27.2%)	111 (19.8%)	86 (18.5%)	82 (16.3%)	95 (20.4%)
Children’s daily screen time	F = 481.461	P <  0.001a
Included population number	879	692	729	695	561	466	504	466
Children’s screen time (hours/day)	0.23 (0.66)	0.61 (0.91)	1.02 (0.94)	1.40 (2.14)	1.27 (1.22)	1.27 (1.55)	1.13 (1.00)	1.40 (2.00)
Children’s daily outdoor activity time	F = 5505.670	P <  0.001a
Included population number	918	835	787	721	624	598	553	486
Children’s outdoor activity time (hours/day)	2.58 (1.17)	2.96 (1.17)	2.73 (1.23)	2.58 (1.25)	2.02 (0.85)	1.93 (0.69)	1.90 (0.75)	1.87 (0.94)

^aP value was calculated by one-way repeated measures ANOVA