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Table 1 eCO values (ppm) provided by B&K and PiCO+ in the healthy volunteers enrolled in this study

From: Normal values of exhaled carbon monoxide in healthy subjects: comparison between two methods of assessment

  Smokers Non-smokers
  Males Females Total Males Females Total
  N = 8 N = 11 N = 19 N = 7 N = 8 N = 15
B&K 21. 8 16. 3 18. 3 11. 2 10. 4 10. 9
(31.71) (28.35) (28.35) (2.15) (4.16) (5.17)
PiCO+ 23. 8 15. 9 19. 2 4.3 3.2 3.7
  (13.27) (12.94) (13.54) (4.5) (3.4) (3.4)
  1. Values are stratified by gender and smoking habits and reported as medians (ranges: max-min values).