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.
(A) Kaplan-Meier survival curve by PM2.5 exposure (pm_pred_C). Survival comparing PM2.5 level ≤8.282 (median) vs >8.282. (B) Kaplan-Meier survival curve by deprivation index (dep_index_C). Survival comparing deprivation index level ≤0.347 (median) vs >0.347. (PM2.5, particulate matter smaller than 2.5 μm.)
