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Table 4 Correlation between RNFL thickness and study parameters in the patients group

From: Optical coherence tomography and cognitive dysfunction in Parkinson disease

RNFL thicknessPDQ-39 QuestionnaireDuration of illnessAgeSeverity of disease
MobilityADLEmotional well beingStigmaSocial supportCognitionsCommunicationBodily discomfort
Superior− 0.39− 0.39− 0.21− 0.4− 0.32− 0.54− 0.51− 0.35− 0.47− 0.44− 0.5
P value0.012*0.012*0.20.02*0.04*< 0.001**< 0.001**0.03*0.002**0.004**0.001**
Inferior− 0.35− 0.24− 0.0940.13− 0.070.02− 0.120.14− 0.36− 0.29− 0.22
P value0.03*0.130.560.430.60.910.520.400.02*0.060.17
Nasal− 0.044− 0.060.05− 0.20− 0.08− 0.15− 0.04− 0.190.034− 0.30− 0.19
P value0.80.740.80.210.620.370.80.240.830.060.22
Temporal− 0.014− 0.120.16− 0.270.08− 0.15− 0.14− 0.095-0.19− 0.23− 0.20
P value0.930.450.320.090.630.360.380.60.240.170.21
Total thickness− 0.12− 0.230.05− 0.24− 0.07− 0.28− 0.24− 0.06− 0.28− 0.38− 0.33
P value0.460.150.780.140.670.080.130.710.080.02*0.03*
  1. PDQ-39 Parkinson’s disease questionnaire-39, ADL activities of daily living
  2. * significant difference
  3. ** highly significant difference