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Optimal design of multiple‐objective Lot Quality Assurance Sampling (LQAS) plans

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  • Belmiro P.M. Duarte
  • Weng Kee Wong

Abstract

Lot Quality Assurance Sampling (LQAS) plans are widely used for health monitoring purposes. We propose a systematic approach to design multiple‐objective LQAS plans that meet user‐specified type 1 and 2 error rates and targets for selected diagnostic accuracy metrics. These metrics may include sensitivity, specificity, positive predictive value, and negative predictive value in high or low anticipated prevalence rate populations. We use Mixed Integer Nonlinear Programming (MINLP) tools to implement our design methodology. Our approach is flexible in that it can directly generate classic LQAS plans that control error rates only and find optimal LQAS plans that meet multiple objectives in terms of diagnostic metrics. We give examples, compare results with the classic LQAS and provide an application using a malaria outcome indicator survey in Mozambique.

Suggested Citation

  • Belmiro P.M. Duarte & Weng Kee Wong, 2019. "Optimal design of multiple‐objective Lot Quality Assurance Sampling (LQAS) plans," Biometrics, The International Biometric Society, vol. 75(2), pages 572-581, June.
    • Handle: RePEc:bla:biomet:v:75:y:2019:i:2:p:572-581
    DOI: 10.1111/biom.13008
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