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Efficient estimators with categorical ranked set samples: estimation procedures for osteoporosis

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  • Armin Hatefi
  • Amirhossein Alvandi

Abstract

Ranked set sampling (RSS) design as a cost-effective sampling is a powerful tool in situations where measuring the variable of interest is costly and time-consuming; however, ranking information about sampling units can be obtained easily through inexpensive and easy to measure characteristics at little or no cost. In this paper, we study RSS data for analysis of an ordinal population. First, we compare the problem of non-representative extreme samples under RSS and commonly-used simple random sampling. Using RSS data with tie information, we propose non-parametric and maximum likelihood estimators for population parameters. Through extensive numerical studies, we investigate the effect of various factors including ranking ability, tie generating mechanisms, the number of categories and population setting on the performance of the estimators. Finally, we apply the proposed methods to the bone disorder data to estimate the proportions of patients with osteopenia and osteoporosis status.

Suggested Citation

  • Armin Hatefi & Amirhossein Alvandi, 2022. "Efficient estimators with categorical ranked set samples: estimation procedures for osteoporosis," Journal of Applied Statistics, Taylor & Francis Journals, vol. 49(4), pages 803-818, March.
    • Handle: RePEc:taf:japsta:v:49:y:2022:i:4:p:803-818
    DOI: 10.1080/02664763.2020.1841742
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    Cited by:

    1. Amirhossein Alvandi & Armin Hatefi, 2023. "Analysis of Ordinal Populations from Judgment Post-Stratification," Stats, MDPI, vol. 6(3), pages 1-27, August.

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