Table 5.

Cognitive impairment based on MoCA in stroke patients according to polysomnography results

	β	OR (95% CI)	p value
Arousal index	− 0.023	0.98 (0.858–1.113)	0.729
AHI	− 0.043	1.42 (1.056–1.706)	0.041
Lowest SpO2	0.311	1.37 (1.003–1.857)	0.048
Mean SpO2	0.004	1.00 (0.823–1.226)	0.966
ODI	− 0.134	0.87 (0.668–1.144)	0.327
Stage N1	0.35	0.96 (0.687–1.337)	0.081
Stage N2	− 0.037	0.96 (0.874–1.062)	0.456
Stage N3	0.079	1.08 (0.788–1.487)	0.625
Stage REM	− 0.011	0.99 (0.79–1.239)	0.927
Sleep efficiency	− 0.006	0.99 (0.896–1.102)	0.906
TST	0.002	1.00 (0.986–1.018)	0.819
TSat90	− 0.231	0.79 (0.517–1.22)	0.292
ESS	0.097	1.10 (0.886–1.371)	0.383

AHI, apnoea hypopnoea index; ODI, oxygen desaturation index with oximetry recording; ESS, Epworth Sleepiness Scale; REM, rapid eye movement; SpO2, pulse oxygen saturation; TST, total sleep time; TSat90, percent of night-time spent with an oxygen saturation of < 90%; β, partial regression coefficient; OR, odds ratio; 95% CI, 95% confidence interval