Abstract:
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The National Immunization Survey-Flu (NIS-Flu) provides influenza vaccination estimates for children based on parental report. We examined a subset of 10,027 children 19-35 months for whom provider records were available. Parent and provider report of the child receiving influenza vaccination in the 2015-16 season were compared. Preliminary results show over-reporting bias by parents, with 61.6% vaccination coverage by parent report compared with 58.6% by provider report. Overall, there was 72.7% agreement between parents and providers, 15.7% of children were vaccinated according to parents but not providers, and 11.6% of children were vaccinated according to providers but not parents. Overall, sensitivity=0.80, specificity=0.62, positive predictive value=0.75, and negative predictive value=0.69. Measures varied by respondent relationship to the child, race/ethnicity, and household income. There is a tradeoff of accuracy versus timeliness in using parent reported vaccination. With the 27.3% disagreement between these outcomes, there may also be implications for models assessing the association of socio-demographic factors with parent versus provider reported vaccination coverage.
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