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Table 3 Relation of lead level and patients’ characteristics

From: Evaluation of blood lead level in methamphetamine users in Tehran

  Mean (SD) P Value*
Sex Male 2.2 ± 1.1 0.313
Female 2.9 ± 0.2
Age group <= 30 year 2.4 ± 1.1 0.543
>30 year 2.0 ± 1.0
Administration route Inhalation 2.3 ± 1.0 0.711
Oral 2.0 ± 1.0
Dosage <= 0.5 gr/day 2.8 ± 1.2 0.128
>0.5 gr/day 2.1 ± 0.8
  1. * Mann-Whitney U tests