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Population Screening for Hereditary Haemochromatosis in Australia: Construction and Validation of a State-Transition Cost-Effectiveness Model

Author

Listed:
  • Barbara Graaff

    (University of Tasmania)

  • Lei Si

    (University of Tasmania)

  • Amanda L. Neil

    (University of Tasmania)

  • Kwang Chien Yee

    (University of Tasmania)

  • Kristy Sanderson

    (University of Tasmania)

  • Lyle C. Gurrin

    (University of Melbourne)

  • Andrew J. Palmer

    (University of Tasmania)

Abstract

Introduction HFE-associated haemochromatosis, the most common monogenic disorder amongst populations of northern European ancestry, is characterised by iron overload. Excess iron is stored in parenchymal tissues, leading to morbidity and mortality. Population screening programmes are likely to improve early diagnosis, thereby decreasing associated disease. Our aim was to develop and validate a health economics model of screening using utilities and costs from a haemochromatosis cohort. Methods A state-transition model was developed with Markov states based on disease severity. Australian males (aged 30 years) and females (aged 45 years) of northern European ancestry were the target populations. The screening strategy was the status quo approach in Australia; the model was run over a lifetime horizon. Costs were estimated from the government perspective and reported in 2015 Australian dollars ($A); costs and quality-adjusted life-years (QALYs) were discounted at 5% annually. Model validity was assessed using goodness-of-fit analyses. Second-order Monte-Carlo simulation was used to account for uncertainty in multiple parameters. Results For validity, the model reproduced mortality, life expectancy (LE) and prevalence rates in line with published data. LE for C282Y homozygote males and females were 49.9 and 40.2 years, respectively, slightly lower than population rates. Mean (95% confidence interval) QALYS were 15.7 (7.7–23.7) for males and 14.4 (6.7–22.1) for females. Mean discounted lifetime costs for C282Y homozygotes were $A22,737 (3670–85,793) for males and $A13,840 (1335–67,377) for females. Sensitivity analyses revealed discount rates and prevalence had the greatest impacts on outcomes. Conclusion We have developed a transparent, validated health economics model of C282Y homozygote haemochromatosis. The model will be useful to decision makers to identify cost-effective screening strategies.

Suggested Citation

  • Barbara Graaff & Lei Si & Amanda L. Neil & Kwang Chien Yee & Kristy Sanderson & Lyle C. Gurrin & Andrew J. Palmer, 2017. "Population Screening for Hereditary Haemochromatosis in Australia: Construction and Validation of a State-Transition Cost-Effectiveness Model," PharmacoEconomics - Open, Springer, vol. 1(1), pages 37-51, March.
  • Handle: RePEc:spr:pharmo:v:1:y:2017:i:1:d:10.1007_s41669-016-0005-0
    DOI: 10.1007/s41669-016-0005-0
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    References listed on IDEAS

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    1. Drummond, Michael F. & Sculpher, Mark J. & Torrance, George W. & O'Brien, Bernie J. & Stoddart, Greg L., 2005. "Methods for the Economic Evaluation of Health Care Programmes," OUP Catalogue, Oxford University Press, edition 3, number 9780198529453.
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    1. Lartey, Stella T. & Si, Lei & Otahal, Petr & de Graaff, Barbara & Boateng, Godfred O. & Biritwum, Richard Berko & Minicuci, Nadia & Kowal, Paul & Magnussen, Costan G. & Palmer, Andrew J., 2020. "Annual transition probabilities of overweight and obesity in older adults: Evidence from World Health Organization Study on global AGEing and adult health," Social Science & Medicine, Elsevier, vol. 247(C).

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