Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Exhaled carbon monoxide values in healthy controls (HC), COPD patients and asthma patients
| First author [ref.] | Patients | Smokers versus nonsmokers | SHS | |||||
| Cut-off ppm | Sns | Spc | SHS | Sns % | Spc % | |||
| HC | Middleton [12] | 65 | 6 | 94% | 96% | NA | NA | NA |
| Chatrchaiwiwatana [5] | 675 | 5 | 79.4% | 91.2% | NA | NA | NA | |
| COPD | Sato [14] | 170 | 11 | 73.1% | 84.7% | NA | NA | NA |
| Asthma | Sato [14] | 170 | 10 | 85% | 85.8% | NA | NA | NA |
Sns: sensitivity; Spc: specificity; SHS: second-hand smoke; NA: not available.
