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Table 2 Geometric means of blood lead concentration among ADHD cases and controls

From: Blood lead concentrations and attention deficit hyperactivity disorder in Korean children: a hospital-based case control study

Blood lead concentrations Range (μg/dℓ) Mean ± SD p-value Cohen’s D
Cases 0.37–5.35 1.90 ± 0.86 0.003 0.40
Controls 0.18–3.41 1.59 ± 0.68