Table 4.

Linear regression models for the association between MoCA scores and characteristics of OSA or RBD

MoCA linear regression	β	95% confidence internal	P
OSA
Unadjusted	−0.722	−1.544 to 0.101	0.085
Model 1	−0.584	−1.395 to 0.228	0.157
Model 2	−0.574	−1.395 to 0.247	0.169
Model 3	−0.736	−1.447 to −0.025	0.043
RBD
Unadjusted	−2.480	−3.179 to −1.781	<0.001
Model 1	−2.429	−3.088 to −1.771	<0.001
Model 2	−2.445	−3.106 to −1.784	<0.001
Model 3	−2.575	−3.231 to −1.920	<0.001
AHI
Unadjusted	−0.054	−0.087 to −0.021	0.002
Model 1	−0.046	−0.079 to −0.012	0.008
Model 2	−0.046	−0.080 to −0.012	0.008
Model 3	−0.052	−0.081 to −0.024	<0.001
ODI
Unadjusted	−0.061	−0.094 to −0.028	<0.001
Model 1	−0.054	−0.087 to −0.020	0.002
Model 2	−0.054	−0.088 to −0.020	0.002
Model 3	−0.060	−0.089 to −0.031	<0.001
Tonic EMG activity
Unadjusted	−0.059	−0.100 to −0.019	0.005
Model 1	−0.057	−0.104 to −0.011	0.016
Model 2	−0.059	−0.105 to −0.012	0.016
Model 3	−0.065	−0.119 to −0.012	0.017
Phasic EMG activity
Unadjusted	−0.046	−0.087 to −0.004	0.031
Model 1	−0.043	−0.088 to 0.001	0.057
Model 2	−0.047	−0.093 to −0.002	0.043
Model 3	−0.051	−0.102 to −0.001	0.049

Model 1: Adjusted for age, duration, education, and BMI; Model 2: Adjusted for age, duration, education, BMI, UPDRS III score, and Levodopa-equivalent daily dosage; Model 3: Adjusted for age, duration, education, BMI, UPDRS III score, Levodopa-equivalent daily dosage, insomnia, restless legs syndrome, RBD, or OSA. MoCA: Montreal Cognitive Assessment; OSA: Obstructive sleep apnea; RBD: Rapid eye movement sleep behavior disorder; AHI: Apnea-hypopnea index; ODI: Oxygen desaturation index; EMG: Electromyography; BMI: Body mass index; UPDRS: Unified Parkinson’s Disease Rating Scale.