Fig 1. Kaplan–Meier estimates for successful smoking cessation according to the selected predictors.
In the restricted analysis with quitters who continued to be non-smokers for at least two years or more and on-going smokers.
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.