Clinical criteria of the studied patients

ParameterMean ± SDRange
Hoehn and Yahr (H-Y)2.2 ± 1.141–5
H-Y stagesStage 126 (32.5%)
stage 230 (37.5%)
Stage 314 (17.5%)
Stage 4 and 510 (12.5%)
UPDRS-III67.3 ± 35.4520–187
BDI18.3 ± 15.292–50
SDMT40.4 ± 7.9925–55
BVMT-R22.6 ± 5.4214–36
CVLT-II54.0 ± 17.5621–79
CVLT-II delayed recall11.5 ± 4.163–16
MoCA score25.1 ± 3.6116–29
HAM-A15.02 ± 13.061–44

Quantitative data is presented in mean and standard deviation (SD), in the left column, and range in the right column, while qualitative data is presented in n (%). UPDRS-III: Unified Parkinson’s Disease Rating Scale, Part III; BDI: Beck Depression Inventory; SDMT: Symbol Digit Modalities Test; BVMT-R: Brief Visuospatial Memory Test-Revised; CVLT-II: California Verbal Learning Test-II; MoCA: Montreal Cognitive Assessment; HAM-A: Hamilton Anxiety Rating Scale