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Table 4 Correlation between different characteristics of MS patients and BDNF level

From: Serum level of brain-derived neurotrophic factor in patients with relapsing–remitting multiple sclerosis: a potential biomarker for disease activity

  BDNF level (pg/ml) (remission group) BDNF level (pg/ml) (relapse group)
(r) coefficient P value (r) coefficient P value
Age 0.032 0.767 0.076 0.689
Age of onset − 0.017 0.898 0.123 0.519
Disease duration − 0.144 0.273 − 0.036 0.848
Number of relapses in the last 2 years − 0.159 0.224 − 0.137 0.721
Total number of relapses − 0.158 0.227 − 0.099 0.601
EDSS − 0.140 0.287 − 0.056 0.767
Number of supratentorial lesions in MRI − 0.116 0.376 − 0.007 0.973
Number of infratentorial lesions in MRI 0.098 0.457 0.402* 0.028*
Number of spinal cord lesions in MRI − 0.080 0.541 − 0.130 0.494
  1. BDNF brain-derived neurotrophic factor, EDSS Expanded Disability Status Scale
  2. *P value < 0.05 (significant)