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Table 4 Associations between blood lead concentration and the scores of the ADHD-rating scale and continuous performance test within ADHD cases

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

Variables Unadjusted B (SE) p-value Adjusted B (SE)a p-value
ADHD-Rating Scale
 Inattention 0.66 (0.62) 0.30 0.69 (0.75) 0.36
 Hyperactivity/impulsivity 0.94 (0.52) 0.07 1.04 (0.60) 0.87
 Total 1.60 (1.08) 0.14 1.74 (1.29) 0.18
Continuous Performance Test
 Omission errors 0.86 (2.03) 0.67 0.05 (2.29) 0.99
 Commission errors -0.47 (1.79) 0.79 -0.72 (2.08) 0.72
 Response time 2.71 (1.36) 0.04 2.48 (1.60) 0.12
 Response time variability 2.18 (1.81) 0.24 2.26 (2.23) 0.31
  1. B regression coefficient, SE standard error
  2. aAdjusted for sex, age, gestational age, birth weight, economic status, parental education, and parents’ smoking behavior