From: Decreased blood pressure associated with in-vehicle exposure to carbon monoxide in Korean volunteers
Targeted concentration of CO (ppm) | First test, % (n) | Second test, % (n) | Total, % (n) | P value |
---|---|---|---|---|
0 | 1.3 (14) 1.0-1.5 | 1.1 (14) 1.0-1.4 | 1.2 (28) 1.0-1.4 | <0.001 |
30 | 1.8 (14) 1.4-2.2 | 1.5 (14) 1.4-1.6 | 1.7 (28) 1.4-1.9 | |
50 | - | 2.2 (14) 2.0-2.4 | 2.2 (14) 2.0-2.4 | |
70 | 2.5 (14) 2.3-2.8 | - | 2.5 (14) 2.3-2.8 |