Table 2.

Distribution of objective and subjective sleep parameters

Sleep Parameters	Total
Objective sleep parameters
Total sleep time (hours), mean (SD)	5.8 ± 0.9
<5 h	53 (19.0)
5–6 h	111 (40.0)
6–7 h	97 (34.8)
>7 h	18 (6.5)
Wake after sleep onset (min), median (IQR)	37.9 (28.1–49.5)
Sleep efficiency (%)	80.9 ± 7.5
Subjective sleep parameters
PSQI global score	5.1 ± 2.8
Subjective sleep quality, median (IQR)	1 (0–2)
Sleep latency, median (IQR)	1 (0–1)
Sleep duration, median (IQR)	1 (0–2)
Habitual sleep efficiency, median (IQR)	0 (0–1)
Sleep disturbances, median (IQR)	1 (1–1)
Use of sleeping medications, median (IQR)	0 (0–0)
Daytime dysfunction, median (IQR)	1 (0–1)

IQR, inter-quartile range; SD, standard deviation.