Table 3.
Associations of chronotype, sleep quality and depressive symptoms in college students.
| Chronotype | Sleep quality | n | PHQ-9 | χ2-value | |||
|---|---|---|---|---|---|---|---|
| No depression | Mild depression | Moderate depression | Moderate to severe depression | ||||
| M-types | Good | 189 | 131 (69.3) | 49 (25.9) | 7 (3.7) | 2 (1.1) | 54.32b |
| Poor | 20 | 6 (30.0) | 5 (25.0) | 2 (10.0) | 7 (35.0) | ||
| N-types | Good | 700 | 444 (63.4) | 217 (31.0) | 29 (4.1) | 10 (1.4) | 140.76b |
| Poor | 107 | 18 (16.8) | 51 (47.7) | 19 (17.8) | 19 (17.8) | ||
| E-types | Good | 95 | 49 (51.6) | 39 (41.1) | 4 (4.2) | 3 (3.2) | 35.73b |
| Poor | 24 | 3 (12.5) | 7 (29.2) | 7 (29.2) | 7 (29.2) | ||
b
P-value < 0.001.