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.
Effect of prevention interventions on change in prevalence of overweight or obesity. Values less than 1 indicate a change in prevalence of overweight or obesity in favour of the intervention. 1 = intervention arm 1; 2 = intervention arm 2; F = female; M = male; ob = obese, ow = overweight (overweight and obese are not combined in either extension); RR = risk ratio.
