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.
Association between RV:TLC and FEV1:FVC or FEV1 in the cohort. Relationship between RV:TLC (% predicted) and FEV1:FVC (% predicted), or FEV1 (% predicted). Boxplot distribution of RV:TLC % predicted by 5% increments in FEV1:FVC % predicted (A) and 5% increments in FEV1 % predicted (B) are shown. Blue dots denote patients with abnormal RV:TLC by the upper limit of normal. RV, residual volume; TLC, total lung capacity.
