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.
Demographic characteristics of study patients and controls donating tissues for gene expression analysis.
| Characteristic | non-COPD | COPD |
|---|---|---|
| Sex (M/F) | 2/4 | 4/2 |
| Smoking status (non/current/ex) | 3/1/2 | 0/4/2 |
| Age (mean ± SD) | 59.3 ± 14.5 | 66.8 ± 8.8 |
| %FEV1/FVC (mean ± SD) | 81.6 ± 10.4 | 60.1 ± 12.6 |
