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Table 3 Spearman correlation among biomarkers

From: Neurocognitive impact of metal exposure and social stressors among schoolchildren in Taranto, Italy

  UCd UAs BPb BSe HMn HHg
UCd 1 < 0.001 0.418 0.006 0.262 0.021
UAs 0.253 1 0.099 0.061 0.058 < 0.001
BPb −0.047 0.0953 1 0.320 0.334 0.549
BSe −0.159 0.1081 0.058 1 0.426 0.003
HMn 0.065 0.109 0.056 −0.046 1 0.399
HHg −0.133 0.276 −0.035 0.173 0.049 1
  1. Notes: The lower triangle of the matrix shows the Spearman’s correlation coefficients; the upper triangle shows the p-values related to the null hypothesis ρ = 0
  2. UAs Urinary arsenic, UCd Urinary cadmium, UHg Urinary mercury, HHg Hair mercury, BPb Blood lead, HMn Hair manganese, BSe Blood selenium