validation of vitamin a supplementation coverage...
TRANSCRIPT
Twice-yearly child health days (CHDs) have had remarkable success reaching children with life-saving interventions, including vitamin A supplementation (VAS). In 2012, over 80% of targeted children in Sub-Saharan Africa received VAS according to tally-sheet data. All countries implementing CHDs use tally-sheet data to measure coverage; however, coverage measured from tally sheets is prone to error due to inaccurate census data, incorrect tallying and mathematical errors totaling coverage across districts and regions.
• PECS data indicates considerable over-reporting of coverage by
tally-sheets and provides critical data that is essential to evaluate and improve VAS distribution during CHDs.
• The continued use of PECS is recommended in areas where tally-sheet data has not been confirmed or has been shown to be unreliable.
To validate coverage reported by tally-sheets by conducting Post-Event Coverage Surveys (PECS) after each CHD.
This work is a result of the hard work and dedication of staff at HKI country offices and partners, and participation by mothers and caretakers of children. Funding was provided by the Department of Foreign Affairs, Trade and Development Canada.
PECS were conducted using a 30x30 cluster design and standard WHO EPI cluster sampling methodology in 13 countries in sub-Saharan Africa. For each survey, 900 caretakers of children 6-59 months were interviewed within six weeks of CHDs.
Helen Keller International, ESCA Regional Office, Nairobi, Kenya
Contact information for Heather Katcher, Regional Monitoring and Evaluation Officer, Helen Keller International: [email protected].
Introduction
Objective
Methods
Acknowledgements
Conclusions
Results
Figure 2. Percent difference in VAS coverage rates obtained by PECS and tally sheets
PECS coverage was lower than administrative coverage in 41 of 44 (93%) cases (Figure 1). PECS and administrative coverage data were within a 5% margin in 14% of cases, and within >5-10% in 20% of cases. However, in 23% of cases, results differed by >10-20%, and in 43% of cases, results differed by 21-82% (Figure 2).
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Average of PECS and Administrative Coverage
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Figure 1. Bland-Altman plot of PECS and administrative data
Validation of vitamin A supplementation coverage surveys in 12 sub-Saharan Africa countries Katcher HI, Jaschke LE, Oruru G, Blankenship JL