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Table 1 Characteristics of the study population unit: mean±SD, number (%)

From: The Relationship of Liver Function Tests to Mixed Exposure to Lead and Organic Solvents

Characteristics   Control (n=125) Solvent exposure Lead-exposed (n=257) Mixed exposure (n=45) p-value
TCE *co-exposed (n=82) TCE non-exposed (n=84)
Age   42.1±9.1a 47.3±6.8b 39.8±8.0a 44.0±10.5a 38.8±11.5a <0.000
Work duration   14.4±11.9a 24.5±7.3b 14.0±7.5a 14.5±9.3a 15.1±11.6a <0.000
BMI   23.9±2.9a 22.7±3.5a 23.2±3.2a 24.2±2.9a 24.1±3.8a 0.002
Smoking        
  No 30(24.0) 32(39.0) 14(16.7) 73(28.4) 15(33.3) 0.017§
  Yes 95(76.0) 50(61.0) 70(83.3) 184(71.6) 30(66.7)  
Alcohol drink frequency per week      
  2.03±1.44a 1.65±1.53a,b 1.96±1.54a 1.95±1.62a 1.31±1.34b 0.046
Blood Lead(μg/dl) - - - 8.33±5.18 6.12±4.30 0.012
Urine hippuric acid - 0.57±0.58a 0.28±0.36b - 0.37±0.54b 0.001
Urine methyl hippuric acid - 0.04±0.10a 0.14±0.17b - 0.07±0.12a <0.000
  1. *Trichloroethylene, Body mass index, p-values were tested by one-way ANOVA.
  2. §p-values were tested by Pearson's Chi-squared test.
  3. p-value was tested by independent t-test.
  4. a,bThe same letters indicate a non-significant difference between groups based on Duncan's multiple comparison test.