Table 2.

Average scores in the seven components of the PSQI.

Component	Score (average)
1. Subjective sleep quality	1
2. Sleep latency	1
3. Sleep duration	0
4. Habitual sleep efficiency	1
5. Sleep disturbances	1
6. Use of sleeping medication	0
7. Daytime dysfunction	0
PSQI – Total∗	4

^∗Total PSQI – sum of the scores in all components.