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Table 5 Comparison of biomarkers between respondent types

From: Air quality index from charcoal production sites, carboxyheamoglobin and lung function among occupationally exposed charcoal workers in South Western Nigeria

  Subject Control p-value
FEV1
 Range 0.88–4.21 1.49–4.02  
 Mean ± SD 2.35 ± 0.73 2.69 ± 0.56 0.06
PEFR
 Range 104.00–618.00 156.00–650  
 Mean ± SD 253.72 ± 103.45 330.02 ± 94.61 0.000
COHb (%)
 Range 5.00–20.00 1.00–18.00  
 Mean ± SD 13.28 ± 3.91 8.50 ± 3.68 0.000
BMI (kg/m2)
 Range 16.22–26.03 18.03–35.06  
 Mean ± SD 21.97 ± 2.19 23.36 ± 3.74 0.019