15.4. Analysis.
Comparison 15 Maternal health intervention with smoking cessation component: counselling vs usual care, Outcome 4 Smoking reduction: biochemical measures in late pregnancy.
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.