| Mean ± SD | Correlation coefficient | p value |
J-SDS | 32.6 ± 12.5 |
|
|
Hours of use during weekdays | 3.1 ± 1.8 | 0.33 | <0.001 |
Hours of use during holidays | 4.1 ± 2.1 | 0.31 | <0.001 |