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Median, mean, and standard deviation of the PSQI scores
| Group | Median | Mean | Standard deviation |
|---|---|---|---|
| Whole sample | 5 | 6.35 | 3.70 |
| Good sleepers (n=47) | 4 | 3.74 | 1.20 |
| Poor sleepers (n=46) | 8 | 9.02 | 3.48 |
Abbreviations: PSQI, Pittsburgh Sleep Quality Index; n, number.
