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Table 5 The relationship between serum bilirubin concentration results and EEG findings during both headache attacks and during headache-free periods (at least 2 days after the most recent attack)

From: Association between serum bilirubin and migraine in children and adolescents

EEG findings

Total bilirubin, mean ± SD

Direct bilirubin, mean ± SD

Indirect bilirubin, mean ± SD

During headache attacks

Normal (26)

0.53 ± 0.13

0.18 ± 0.04

0.35 ± 0.08

Abnormal (14)

0.49 ± 0.14

0.16 ± 0.05

0.32 ± 0.09

pvalue, **ttest

0.319

0.317

0.326

During headache-free periods

Normal (35)

0.69 ± 0.20

0.21 ± 0.05

0.48 ± 0.16

Abnormal (5)

0.44 ± 0.16

0.14 ± 0.05

0.29 ± 0.10

pvalue, **ttest

0.010

0.018

0.012

  1. ** t test