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Table 4 Carboxyhemoglobin levels of participants after the first and second tests

From: Decreased blood pressure associated with in-vehicle exposure to carbon monoxide in Korean volunteers

 

COHb levels in the first test (n = 23)

COHb levels in second test (n = 20)

33.2 ppm in comparison with 0 ppm

72.4 ppm in comparison with 0 ppm

30.2 ppm in comparison with 0 ppm

48.8 ppm in comparison with 0 ppm

0 ppm

33.2 ppm

Delta

0 ppm

72.4 ppm

Delta

0 ppm

30.2 ppm

Delta

0 ppm

48.8 ppm

Delta

COHb (%)

1.2

0.9-1.5

1.6

1.4-2.1

0.4*

0.1-0.9

1.2

0.9-1.5

2.4

2.2-2.7

1.2*

1.1-1.5

1.2

1.0-1.4

1.6

1.4-1.7

0.4*

0.2-0.6

1.2

1.0-1.4

2.3

2.0-2.4

1.0*

0.9-1.2

  1. Data were expressed as medians with inter-quartile range. Wilcoxon’s Signed-Rank test was used for evaluation of differences between delta changes. P values of < 0.05 were considered significant. * P < 0.05