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Table 1 Summary of population characteristics

From: Heart rate variability and DNA methylation levels are altered after short-term metal fume exposure among occupational welders: a repeated-measures panel study

Characteristics (n = 66)   Mean (SD)
Age (years)   41 (12.2)
Range   21-71
BMI (kg/m2)a   28.4 (5.0)
Range   16.9-38.7
Race N %
White 55 83
Black 6 9
Hispanic 3 5
Asian 2 3
Male 66 100
Current smoker a 28 43.1
  1. a n = 65 due to missing questionnaire information.