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Table 1 Clinical and sociodemographic characteristics of the sample

From: Identifying comorbidities and lifestyle factors contributing to the cognitive profile of early Parkinson’s disease

N = 533 Mean ± SD Range
Age 62.5 ± 8.6 35–75
Disease duration (months) 5.52 ± 6 0–114
UPDRS-IIIa (off) 21.9 ± 11 2–78
H&Yb (off) 2 1–4
 Stage 1 14.7%
 Stage 1.5 9.2%
 Stage 2 60%
 Stage 2.5 7.1%
 Stage 3 7.8%
 Stage 4 1.3%
LDDc 527 ± 420 0–2220
DAd equivalent daily dose 182 ± 172 0–1387
PD-CRSe Total 91.8 ± 15.4 44–135
  1. aUPDRS: Unified Parkinson’s Disease Rating Scale; bH & Y: Hoehn and Yahr; cLDD: L-dopa daily dose; dDA: Dopaminergic agonist; ePD-CRS: Parkinson’s Disease – Cognitive Rating Scale