Table 2.

Comparison of the ESS, PSQI, RBD and HADS scores

Characteristic	Males (N = 189)	Females (N = 92)	P value
ESS	8.00 (3.00, 15.00)	5.00 (2.00, 12.00)	0.010*
PSQI	8.00 (5.00, 12.00)	10.00 (6.00, 14.00)	0.011*
RBDSQ	3.00 (1.00, 4.00)	3.00 (1.00, 4.00)	0.583
HADS-A	1.00 (0.00, 4.00)	2.00 (1.00, 5.00)	0.034*
HADS-D	2.00 (0.00, 4.00)	4.00 (1.00, 7.00)	0.010*

(*P < 0.05; the data in the table are expressed as x ± s, or M (P25, P75)). Abbreviations: ESS, Epworth Sleepiness Scale; PSQI, Pittsburgh Sleep Quality Index; RBD, REM Sleep Behaviour Disorder Screening Questionnaire; HADS, Hospital Anxiety and Depression Scale