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Table 3 Statistical Analysis of Serum Heavy Metals in Yanbu Firefighters as Compared to Jeddah Firefighters, (mean ± S.D.).

From: Serum heavy metals and hemoglobin related compounds in Saudi Arabia firefighters

Parameter Jeddah FFs* n Yanbu FFs* n t-test p- value
Lead (μg/dL) 3.49 ± 1.06 8 3.83 ± 1.64 16 0.52231 N.S.
Arsenic (μg/dL) 0.34 ± 0.23 8 0.33 ± 0.15 18 0.1267 N.S.
Mercury (μg/dL) 0.27 ± 0.05 8 0.28 ± 0.05 19 0.3283 N.S.
Cadmium (μg/dL) 0.07 ± 0.03 8 0.10 ± 0.08 18 1.0303 N.S.
Antimony (μg/dL) 0.00 ± 0.00 8 0.00 ± 0.00 18 ---- N.S.
  1. *FFs: firefighters
  2. N.S: non-significant