Journal of the Korean Academy of Child and Adolescent Psychiatry : eISSN 2233-9183 / pISSN 1225-729X

Table. 1.

Table. 1.

Demographic characteristics of participants

Characteristics Total (n=331) Screen overuse (n=34, 10.3%) Control (n=297, 89.7%) χ2 p
Age 6.347 0.096
7 years 52 (15.7) 7 (20.6) 45 (15.2)
8 years 139 (42.0) 9 (26.5) 130 (43.8)
9 years 105 (31.7) 11 (32.4) 94 (31.6)
10 years 35 (10.6) 7 (31.7) 28 (9.4)
Sex 0.353 0.552
Male 169 (51.1) 19 (55.9) 150 (50.5)
Female 162 (48.9) 15 (44.1) 147 (49.5)
Family income, KRW 12.795 0.012*
<1M 1 (0.3) 0 (0.0) 1 (0.3)
1-2M 10 (3.0) 3 (8.8) 7 (2.4)
2-4M 92 (27.8) 16 (47.1) 76 (25.6)
4-6M 127 (38.4) 8 (23.5) 119 (40.1)
>6M 101 (30.5) 7 (20.6) 94 (31.6)
Possession ratio
TV 316 (95.5) 33 (97.1) 283 (95.3) 0.222 0.683
Computer 284 (85.8) 24 (70.6) 260 (87.5) 7.198 0.007* *
Tablet PC 228 (68.9) 17 (50.0) 211 (71.0) 6.303 0.012*
Smartphone 308 (93.1) 31 (91.2) 277 (93.3) 0.206 0.650
Parent employment status
Father 0.464 0.496
Employed 327 (98.8) 34 (100.0) 293 (98.7)
Unemployed 4 (1.2) 0 (0.0) 4 (1.3)
Mother 0.138 0.710
Employed 156 (47.1) 15 (44.1) 141 (47.5)
Unemployed 175 (52.9) 19 (55.9) 156 (52.5)
Main caregiver 0.043 0.835
Mother 314 (94.9) 32 (94.1) 282 (94.9)
Others 17 (5.1) 2 (5.9) 15 (5.1)
BMI (kg/m2), mean (SD) 16.6 (2.46) 17.4 (3.10) 16.5 (2.36) 1.980 0.049*

Data are presented as n (%) unless otherwise indicated. *p<0.05; ** p<0.01. BMI, body mass index; SD, standard deviation

J Korean Acad Child Adolesc Psychiatry 2021;32:154-60 https://doi.org/10.5765/jkacap.210015
© 2021 J Korean Acad Child Adolesc Psychiatry