Table 2. Distribution of patients with high PSQI and ISI scores and changes in the sleep disturbance ratio after applying different cut-off values.

	Mean PSQI/ISI	PSQI		ISI
		PSQI > 5 n/total (%)	PSQI > 8.5 n/total (%)	ISI ≥ 8 n/total (%)	ISI ≥ 15 n/total (%)
BPPV	7.1/8.2	45/74 (60.8)	26/74 (35.1)	36/74 (48.6)	12/74 (16.2)
MD	7.5/8.1	20/32 (62.5)	12/32 (37.5)	12/32 (37.5)	6/32 (18.8)
VN	6.5/8.9	19/36 (52.8)	9/36 (25.0)	19/36 (52.8)	5/36 (13.9)
VM	8.0/9.4	40/54 (74.1)	26/54 (48.1)	33/54 (61.1)	14/54 (25.9)
PD	9.5/11.1	18/20 (90.0)	10/20 (50.0)	13/20 (65.0)	7/20 (35.0)
Other	8.6/10.2	19/21 (90.5)	11/21 (52.4)	17/21 (81.0)	3/21 (14.3)
Total	7.9/9.3	161/237 (67.9)	93/237 (39.2)	126/237 (53.2)	47/237 (19.8)
p		0.006†	0.206	0.027*	0.310