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Table 5 Correlation between Modified Hoehn and Yahr staging and UPDRS and serum vitamin D level

From: Could vitamin D deficiency have an impact on motor and cognitive function in Parkinson’s disease?

  Vitamin D
(r) coefficient P value
Modified Hoehn and Yahr staging − 0.573 0.003*
UPDRS
 Motor
  Tremor − 0.383 0.059
  Rigidity − 0.446 0.025*
  Postural instability − 0.774 < 0.001*
  Bradykinesia − 0.452 0.023*
  Total score − 0.505 0.01*
 Mentation − 0.753 < 0.001*
 Activities − 0.494 0.012*
 Complication of medication − 0.474 0.017*
 Other complication − 0.416 0.039*
 Total UPDRS − 0.582 0.002*
  1. UPDRS: Unified Parkinson’s Disease Rating Scale
  2. *P value < 0.05 (significant)