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.
Time trend of pulmonary function tests values
| Reference | 2011 | 2012 | 2013 | 2014 | ||
| FVC | L | 4.90 | 3.77 | 4.04 | 4.51 | 3.83 |
| FEV1 | L | 3.91 | 2.70 | 2.43 | 2.80 | 2.27 |
| PEF | L* s-1 | 9.21 | 7.65 | 7.32 | 8.00 | 8.11 |
| FEV1/FVC | % | 79.7 | 71.6 | 60.0 | 62.0 | 59.0 |
| FEF25-75 | L*s-1 | 4.03 | 1.97 | 1.05 | 1.29 | 0.99 |
| DLCO (adj) | mL/mmHg*s-1 | 30.8 | - | - | 23.4 | 18.2 |
