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Table 3 Comparing group levels of CSF YKL-40, neopterin, and NFL using Tukey’s multiple comparison test after one-way ANOVA

From: Cerebrospinal fluid levels of glial marker YKL-40 strongly associated with axonal injury in HIV infection

Group comparisons

CSF YKL-40 (log)

CSF neopterin (log)

CSF NFL (log)

Overall ANOVA p

< 0.0001

< 0.0001

< 0.0001

Tukey’s multiple comparison

 HAD vs. HIV–

< 0.0001

ND

< 0.0001

 HAD vs. ART

< 0.0001

< 0.0001

< 0.0001

 HAD vs. NA CD4 ≥ 350

< 0.0001

< 0.0001

< 0.0001

 HAD vs. NA CD4 200–349

< 0.0001

ns

< 0.0001

 HAD vs. NA CD4 50–199

< 0.0001

ns

< 0.0001

 HAD vs. NA CD4 < 50

< 0.0001

ns

< 0.0001

 NA CD4 < 50 vs. HIV–

< 0.0001

ND

< 0.0001

 NA CD4 < 50 vs. ART

< 0.05

< 0.0001

< 0.0001

 NA CD4 < 50 vs. NA CD4 ≥ 350

< 0.05

< 0.0001

< 0.0001

 NA CD4 < 50 vs. NA CD4 200–349

ns

ns

< 0.0001

 NA CD4 < 50 vs. NA CD4 50–199

ns

ns

ns

 NA CD4 50–199 vs. HIV–

< 0.0001

ND

ns

 NA CD4 50–199 vs. ART

ns

< 0.0001

< 0.05

 NA CD4 50–199 vs. NA CD4 ≥ 350

ns

< 0.01

ns

 NA CD4 50–199 vs. NA CD4 200–349

ns

ns

ns

 NA CD4 200–349 vs. HIV–

< 0.05

ND

ns

 NA CD4 200–349 vs. ART

ns

< 0.0001

ns

 NA CD4 200–349 vs. NA CD4 ≥ 350

ns

< 0.05

ns

 NA CD4 ≥ 350 vs. HIV–

ns

ND

ns

 NA CD4 ≥ 350 vs. ART

ns

< 0.01

ns

 ART vs. HIV–

ns

ND

ns

  1. Median cerebrospinal (CSF) levels of YKL-40, neopterin, and NFL for the different groups
  2. IQR interquartile range, ND no data, ns not significant, NA neuroasymptomatic, HAD HIV-associated dementia, ART antiretroviral therapy