Table 2.

PSQI data in the sample (n = 974 participants) included in the study

	Mean ± standard deviation
PSQI total score	4.8 ± 2.8
PSQI component 1 Subjective sleep quality	0.9 ± 0.6
PSQI component 2 Sleep latency	1 ± 0.8
PSQI component 3 Sleep duration	0.6 ± 0.8
PSQI component 4 Sleep efficiency	0.4 ± 0.8
PSQI component 5 Sleep disturbance	1.1 ± 0.5
PSQI component 6 Use of sleep medication	0.2 ± 0.7
PSQI component 7 Daytime dysfunction	0.6 ± 0.6
PSQI Amount of sleep (h)	6.8 ± 1.1