Table 1.
Descriptive psychometric and demographic data of respondents by KDAI classification.
| Variables | KDAI | ||||
|---|---|---|---|---|---|
| IA (N = 565) | Normal (N = 2,307) | Ua | Total (N = 2,932) | ||
| Median (IQR) | Median (IQR) | Mean ± SD | Median (IQR) | ||
| Age | 17 (16,19) | 18 (16,19) | 1.53 | 17.38 ± 2.24 | 18 (16,19) |
| First Age of Internet Use | 11 (9,3) | 12 (10,14) | 7.41*** | 11.71 ± 2.55 | 12 (10,13) |
| Internet Duration During COVID-19 | 12 (8,16) | 11 (6.75, 15) | −4.15*** | 11.61 ± 6.14 | 12 (7,15) |
| Internet Duration Before COVID-19 | 6 (4.5, 10) | 6 (4,10) | −2.05* | 7.27 ± 4.89 | 6 (4,10) |
| PSQI | 6 (4,9) | 5 (3,7) | −10.47*** | 5.65 ± 2.98 | 5 (3,7) |
| Internalization | 9 (6,11) | 6 (4,9) | −13.56*** | 6.94 ± 3.79 | 7 (4,10) |
| Externalization | 7 (5,9) | 5 (3,7) | −14.49*** | 5.51 ± 2.93 | 5 (3,7) |
| Prosocial | 8 (6,9) | 8 (7,10) | 6.23*** | 7.70 ± 2.41 | 8 (7,10) |
| KDAI | 130 (118, 143) | 64 (47, 84) | −36.99*** | 76.29 ± 39.30 | 73 (51, 98) |
a
Mann–Whitney U-test statistic.
*
p < 0.05;
***
p < 0.001.
IQR, interquartile range; SD, standard deviation.