Non breathing-related sleep fragmentation and imaging markers in patients with atherosclerotic cerebral small vessel disease (CSVD): a cross-sectional case-control study

Table 2 Comparison of PSG measures

Groups	n	SOL, min	TST, min	SE, %	WASO, min	AHI, per hour	PLMSI
Study group	84	25.3 ± 14.5	314.8 ± 88.5	61.5 ± 10.8	131.5 ± 51.2	3.4 ± 1.5	10.3 ± 8.7
Control group		19.8 ± 13.8	368.6 ± 98.2	72.4 ± 13.4	96.8 ± 42.1	3.8 ± 1.2	6.7 ± 5.9
t	24	1.723	1.328	2.397	2.759	0.124	2.605
P		0.095	0.195	0.031	0.011	0.957	0.019
Groups	n	REM (%)	NREM-1 (%)	NREM-2 (%)	NREM-3 (%)	ArI, per hour	PLMAI
Study group	84	16.4 ± 4.7	19.2 ± 3.4	52.2 ± 11.4	10.4 ± 4.5	26.9 ± 7.4	5.6 ± 5.2
Control group	24	19.5 ± 5.5	12.1 ± 1.2	53.4 ± 9.5	13.5 ± 5.2	19.8 ± 7.7	3.7 ± 2.8
t		2.104	4.241	0.285	2.214	2.472	2.352
P		0.045	0.000	0.657	0.039	0.021	0.036

Abbreviations: SOL sleep onset latency; TST total sleep time; SE sleep efficiency; WASO wake after sleep onset; REM rapid eye movement sleep; NREM non rapid eye movement sleep; AHI apnea–hypopnea index; ArI arousal index; PLMSI periodic limb movement in sleep index; PLMAI periodic limb movement related arousal index

ISSN: 1471-2377