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

Table. 2.

Table. 2.

Comparison of smartphone usage between screen overuse group and control group

Total Screen overuse Control χ2/t p
Weekdays frequency, day (SD) 2.05 (2.09) 3.56 (2.08) 1.87 (2.02) -4.597 <0.001
Weekend frequency, day (SD) 1.24 (0.83) 1.62 (0.74) 1.19 (0.83) -3.14 0.003* *
Weekdays usage time per a day 95.912 <0.001
Less than 2 hrs 184 (92.0) 12 (44.4) 172 (99.4)
2 hrs or more 16 (8.0) 15 (55.6) 1 (0.6)
weekend usage time per a day 4.231 <0.001
Less than 2 hrs 194 (78.9) 9 (31.0) 185 (85.3)
2 hrs or more 52 (21.1) 20 (69.0) 32 (14.7)
Starting age of smartphone 0.803 0.370
<24 months 77 (23.3) 10 (29.4) 67 (22.6)
>24 months or none 254 (76.7) 24 (70.6) 230 (77.4)
Smartphone co-user 2.893 0.235
Alone 80 (30.3) 11 (37.9) 69 (29.4)
Main caregiver 102 (38.6) 7 (24.2) 95 (40.4)
Others 82 (31.1) 11 (37.9) 71 (30.2)
Location of smartphone use 4.208 0.040*
Home 195 (73.9) 26 (89.7) 169 (71.9)
Other 69 (26.1) 3 (10.3) 66 (28.1)

Data are presented as n (%) unless otherwise indicated. *p<0.05; **p<0.01. 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