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.
General characteristics of the study participants.
| Control subjects (n=33) | COPD patients (n=96) | p value* | |
|---|---|---|---|
| Males (n) | 33 (100%) | 96 (100%) | NS |
| Age (years) | 58 (10) | 67 (8) | <0.001 |
| Tobacco history (pack-years) | 46.9 (27.8) | 71.9 (76.6) | 0.007 |
| Body mass index (kg/m2) | 28.78 (5) | 28.27 (4.8) | NS |
| Charlson-age index | 2.24 (1.6) | 3.87 (1.2) | <0.001 |
| FVC (%) | 91.59 (13.6) | 91.96 (20.9) | NS |
| FEV1 (%) | 90.26 (13.1) | 59.15 (22.8) | <0.001 |
