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Table 4 Correlation of Parkinson’s severity (UPDRS total score) and population characteristic

From: Impact of Parkinsonism comorbid depression on cognitive functions

Parameter

Spearman’s r

P value

Age

0.384

0.021

Hoehn and Yahr

0.760

 < 0.001

Schwab and England

− 0.781

 < 0.001

Social scale

− 0.262

0.123

HDRS

0.694

 < 0.001

CASI Total

− 0.403

0.015

  1. BOLD variables showed significant correlation and a statistically significant difference
  2. UPDRS Unified Parkinson's Disease Rating Scale, HDRS Hamilton Depression Rating Scale, CASI Cognitive Ability Screening Instrument