Table 1.

Characteristics of the Ni-refinery workers and referents selected to assess gene expression profiles in PBMCs

Referent subjectsNi-refinery workers
ParameterMean ± SDMean ± SDP
Age43.90 ± 8.8445.50 ± 5.450.6441
Smoking (self-reported)
 Smokers [N/(%)][7/70%][6/75%]0.8262
 Smoking years10.70 ± 10.9112.75 ± 10.690.6943
 Cigarettes/day11.70 ± 15.359.25 ± 9.440.6833
Urinary cotinine (μg/g creatinine)8,115.82 ± 10,345.489,034.08 ± 13,552.520.8767
Urinary Ni (μg/g creatinine)3.41 ± 3.306.86 ± 1.600.0119
 Median2.376.32
 Min1.195.23
 Max12.589.44
 10th percentile1.195.23
 25th percentile2.305.37
 75th percentile3.258.38
 90th percentile12.588.38