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Table 3 Bivariable correlation between cognitive functions and disease parameters in the patients’ group

From: Optical coherence tomography and cognitive dysfunction in Parkinson disease

 Montreal cognitive scale 
r valueP value
Age− 0.460.04*
Duration of illness− 0.450.04*
Severity of disease− 0.82< 0.001**
OCTSuperior0.59< 0.001**
Inferior0.0540.74
Nasal0.090.6
Temporal0.180.26
Mean0.290.064
  1. OCT optical coherence tomography
  2. * significant difference
  3. ** highly significant difference