Distribution of screen time and sleep status among different mental health status conditions (depression, anxiety and loneliness)
| Characteristics | Depression* | Anxiety† | Loneliness | |||||
| No (N=604) | Yes (N=466) | P value | No (N=902) | Yes (N=168) | P value | P value | ||
| Screen time, hour, mean (SD) | 7.79 (3.14) | 8.83 (3.31) | <0.001 | 7.98 (3.18) | 8.85 (3.40) | 0.001 | 0.0334‡ | 0.2755 |
| Sleep status, n (%)§ | ||||||||
| Good (N=398) | 349 (47.4) | 49 (14.7) | <0.001 | 375 (41.6) | 23 (13.7) | <0.001 | 24.98 (6.40) | <0.001 |
| Bad (N=672) | 388 (52.6) | 284 (85.3) | 527 (58.4) | 145 (86.3) | 27.42 (6.62) | |||
*CES-D score ≥16 indicates depressive symptoms.
†GAD-7 score ≥10 indicates anxiety symptoms.
‡Spearman’s correlation coefficient.
§PSQI score ≥5 indicates bad sleep status.
CES-D, Centre for Epidemiologic Studies Depression; GAD-7, Generalised Anxiety Disorder-7; PSQI, Pittsburgh Sleep Quality Index.