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Table 3 Spearman correlation coefficients among CSF protein levels

From: Correlated levels of cerebrospinal fluid pathogenic proteins in drug-naïve Parkinson’s disease

   Total αS O-αS Aβ1–42 Total tau P-tau181p
Total αS r 1.000     
p     
n 27     
O-αS r 0.074 1.000    
p 0.7142    
n 27 27    
Aβ1–42 r 0.613*** 0.375 1.000   
p 0.0007 0.0536   
n 27 27 27   
Total tau r 0.839*** −0.108 0.365 1.000  
p 0.0000 0.5916 0.0609  
n 27 27 27 27  
P-tau181p r 0.614** −0.022 0.138 0.665*** 1.000
p 0.0011 0.9170 0.5110 0.0003
n 25 25 25 25 25
  1. **: p < 0.01, ***:p < 0.001
  2. Abbreviations: Total αS, Total α-synuclein; O-αS, Oligomeric α-synuclein; P-tau181p, tau phosphorylated at threonine 181