Table 3.

Pittsburg Sleep Quality Index total and subgroup scores according to frailty status.

Parameters	Not frail(n = 59)	Frailn = 41)	P-value
PSQI total score	6 (1–19)	12 (3–19)	< 0.001*
Subjective sleep quality	1 (0–3)	2 (0–3)	< 0.001*
Sleep latency	1 (0–3)	2 (0–3)	0.003*
Sleep duration	0 (0–3)	2 (0–3)	0.039*
Habitual sleep efficiency	1 (0–3)	3 (0–3)	0.004*
Sleep disturbances	1 (0–3)	2 (1–3)	< 0.001*
Use of sleep medication	0 (0–3)	0 (0–3)	0.306
Daytime dysfunction	0 (0–3)	2 (0–4)	< 0.001*

*: statistically significant, PSQI: Pittsburg Sleep Quality Index. The numerical parameters are presented as median (minimum–maximum).