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.
Hazard ratio and 95% CI for COPD by the fixed ratio and the LLN index both raw and adjusted by sex, age, number of arteries with stenosis, and history of AMI.
Abbreviations: AMI, acute myocardial infarction; COPD, chronic obstructive pulmonary disease; LLN, lower limit of normality; CI, confidence interval.
