Overestimation of vitamin a supplementation coverage from district tally sheets demonstrates importance of population-based surveys for program improvement: lessons from Tanzania.

BACKGROUND: Tanzania has conducted a national twice-yearly Vitamin A supplementation (VAS) campaign since 2001. Administrative coverage rates based on tally sheets consistently report >90% coverage; however the accuracy of these rates are uncertain due to potential errors in tally sheets and thei...

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Bibliographic Details
Main Authors: Christina Nyhus Dhillon, Hamsa Subramaniam, Generose Mulokozi, Zo Rambeloson, Rolf Klemm
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3594174?pdf=render