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Table 1 Demographic characteristics of the study population

From: Welding fume exposure is associated with inflammation: a global metabolomics profiling study

Characteristic Mean ± SD or N
Sample size 52a
Sample collecting time
 Morning and afternoon 29
 Afternoon and evening 23
Age (years) 40.91 ± 12.22
Welding time (hours/month) 33.06 ± 25.51
BMI (kg/m2) 28.43 ± 5.41
Weight (kg) 89.53 ± 17.89
Height (m) 1.77 ± 0.08
Gender
 Male 50
 Female 1
Race
 Caucasian 43
 African American 4
 Asian 2
 Hispanic 2
Current smoker
 Yes 21
 No 30
Medical history
 Diabetes 4
 High blood pressure 5
 Irregular heart arrhythmia 2
 High cholesterol hyperlipidemia 7
  1. aBaseline information of one sample was missing