Table 1 Baseline characteristics of participants

Age, years

60.6 (4.8)

70.6 (10.1)

Sex (M/F)

5/2

16/9

BMI, kg/m²

30.4 (6.8)

29.7 (4.3)

Education, years

16.3 (2.6)

14.4 (3.2)

MoCA test score

23.9 (1.8)

22.4 (3.0)

Epworth Sleepiness Scale score

10.9 (3.0)

10.6 (4.8)

Time from PD diagnosis, years

3.9 (2.2)

9.2 (7.0)

Levodopa equivalent dose, mg/day

374.9 (152.0)

781.9 (446.8)

MDS-UPDRS total score

52.0 (12.2)

64.9 (17.1)

MDS-UPDRS part 1 (non-motor experience of daily living)

12.4 (5.9)

14.2 (4.7)

MDS-UPDRS part 3 (motor examination)

29.1 (7.8)

31.2 (9.8)

AHI, events/hour

39.8 (11.2)

40.4 (29.7)

ODI, events/hour

14.1 (9.6)

16.3 (18.8)

Mean SpO₂

94.3 (1.6)

94.1 (1.9)

Nadir SpO₂

86.7 (5.1)

86.2 (7.7)

T90, % TST

1.0 (1.4)

2.5 (4.3)