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.
Depiction of smoking status and missingness values by treatment group. Each column represents a patient’s status at each of the T = 8 measurement occasions. Black represents an observed value with smoking in the given week, gray represents an observed value of no smoking in the given week, and white represents the patient was missing for the week.
