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Table 4 Spearman correlations between plasma p-tau217 and CSF p-tau217

From: Effects of certain pre-analytical factors on the performance of plasma phospho-tau217

Plasma p-tau217

CSF p-Tau217

R (p-value, adjusted/unadjusted)

All (n = 100)

 Cond 1: thaw at RT, NC

0.614 (< 0.001/ < 0.001)

 Cond 2: thaw at RT, C

0.713 (< 0.001/ < 0.001)

 Cond 3: thaw on ice, NC

0.666 (< 0.001/ < 0.001)

 Cond 4: thaw on ice, C

0.717 (< 0.001/ < 0.001)

+ (n = 50)

 Cond 1: thaw at RT, NC

0.506 (< 0.001/ < 0.001)

 Cond 2: thaw at RT, C

0.579 (< 0.001/ < 0.001)

 Cond 3: thaw on ice, NC

0.511 (< 0.001/ < 0.001)

 Cond 4: thaw on ice, C

0.550 (< 0.001/ < 0.001)

(n = 50)

 Cond 1: thaw at RT, NC

0.190 (0.202/0.186)

 Cond 2: thaw at RT, C

0.394 (0.007/0.005)

 Cond 3: thaw on ice, NC

0.184 (0.202/0.202)

 Cond 4: thaw on ice, C

0.334 (0.022/0.018)

  1. Data are shown as Spearman correlation coefficients (p-values, adjusted/unadjusted) with significant results highlighted in bold. Abbreviations: Aβ+ Amyloid-β positive, Amyloid-β negative, C Centrifugation, Cond Condition, CSF Cerebrospinal fluid, NC Non-centrifugation, RT Room temperature