Table 1 Sociodemographic and clinical characteristics of the participants

Age, years

36/29

71.81 (6.63)

69.86 (6.28)

−1.203^St

0.253

Sex, male (%)

36/29

30 (83.33%)

18 (62.07%)

2.740^×2

0.127

Education, years

36/29

12.39 (5.43)

15.00 (4.31)

2.108 ^St

0.063

Education level

35/28

-

-

5.625^×2

0.155

 Literary skills

-

4 (11.43%)

0 (0.00%)

-

-

 Primary

-

6 (17.14%)

3 (10.71%)

-

-

 Secondary

-

12 (34.29%)

8 (28.57%)

-

-

 Post-secondary

-

13 (37.14%)

17 (60.71%)

-

-

Age at RBD onset (years)

36/-

68.71 (6.42)

-

-

-

RBD duration (years)

36/-

3.74 (4.40)

-

-

-

Abnormal DaTSCAN^a (%)

34/-

25 (73.53)

-

-

-

MDS-UPDRS part III

33/-

1.36 (1.89)

-

-

-

MCI (%)

36/29

13 (36.11)

6 (20.69)

1.176^×2

0.278

MMSE

36/29

29.00 (1.00)*

30.00 (1.00)*

−2.976^BM

0.008

0.849

Vocabulary (WAIS-IV)

36/29

34.50 (10.25)*

39.00 (7.00)*

650.500^U

0.127

NMS

34/29

7.50 (5.00)*

3.00 (2.00)*

5.201^BM

<0.001

1.478

AS

34/29

12.50 (6.44)

7.10 (4.37)

−3.940^Wt

0.001

0.967

BDI-II

34/29

7.00 (7.25)*

2.00 (5.00)*

3.085^BM

0.007

0.901

NPI

35/29

6.00 (14.00)*

0.00 (4.00)*

5.024^BM

<0.001

1.347

UPSIT

36/27

18.39 (6.28)

27.93 (5.80)

6.162 ^St

<0.001

1.569