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The amount of night sleep of depressed patients evaluated (n=93).
| Sleep duration | PSQI Code | Frequency | Percent |
|---|---|---|---|
| More than 7 hours | Code 0 | 32 | 34.4 |
| 6–7 hours | Code 1 | 9 | 9.7 |
| 5–6 hours | Code 2 | 39 | 41.9 |
| Less than 5 hours | Code 3 | 13 | 14.0 |
PSQI: Pittsburg Sleep Quality Index
