Figure 2.
Age-specific and sex-specific (A) incidence rates of COPD per 100,000 person-years, and (B) standardized incidence rates of COPD per 100,000 person-years (standardized for the Korean general population).
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.