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.
Fig 3 Flow of individual participants through study, with outcome measures. *Contrary to protocol,15 28 (not 27) classes were randomised, 16 classes with 305 (not 300) to intervention group and 12 (not 11) classes with 205 children to control group; furthermore, one child was misclassified as in intervention instead of control group
