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Mean and standard deviation of PSQI's sub-scales in research units.
| Mean | SD | |
|---|---|---|
| SSQ | 1.31 | 0.823 |
| SL | 1.57 | 0.963 |
| SDu | 0.92 | 1.01 |
| HSE | 0.7 | 1.09 |
| SD | 1.5 | 0.61 |
| USM | 0.59 | 1.06 |
| DD | 1.08 | 0.86 |
| TSQ | 7.69 | 4.06 |
Abbreviations: SSQ= Subjective Sleep Quality, SL- Sleep Latency, SDu= Sleep Duration, HSE= Habitual Sleep Efficiency. SD= Sleep Disturbances, USM= Use of Sleeping Medication, DD= Daytime Dysfunction, TSQ= Total Sleep Quality.
