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Use of a mixture model for the analysis of contraceptive-use duration among long-term users

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  • Duolao Wang
  • Mike Murphy

Abstract

This paper introduces a mixture model that combines proportional hazards regression with logistic regression for the analysis of survival data, and describes its parameter estimation via an expectation maximization algorithm. The mixture model is then applied to analyze the determinants of the timing of intrauterine device (IUD) discontinuation and long-term IUD use, utilizing 14 639 instances of IUD use by Chinese women. The results show that socio-economic and demographic characteristics of women have different influences on the acceleration or deceleration of the timing of stopping IUD use and on the likelihood of long-term IUD use.

Suggested Citation

  • Duolao Wang & Mike Murphy, 1998. "Use of a mixture model for the analysis of contraceptive-use duration among long-term users," Journal of Applied Statistics, Taylor & Francis Journals, vol. 25(3), pages 319-332.
    • Handle: RePEc:taf:japsta:v:25:y:1998:i:3:p:319-332
    DOI: 10.1080/02664769823052
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    References listed on IDEAS

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    1. Fiona Steele & Ian Diamond & Duolao Wang, 1996. "The determinants of the duration of contraceptive use in China: A multilevel multinomial discrete-hazards mdeling approach," Demography, Springer;Population Association of America (PAA), vol. 33(1), pages 12-23, February.
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    Cited by:

    1. John W. McDonald & Alessandro Rosina, 2001. "Mixture modelling of recurrent event times with long-term survivors: Analysis of Hutterite birth intervals," Statistical Methods & Applications, Springer;Società Italiana di Statistica, vol. 10(1), pages 257-272, January.
    2. Yildiray Yildirim, 2008. "Estimating Default Probabilities of CMBS Loans with Clustering and Heavy Censoring," The Journal of Real Estate Finance and Economics, Springer, vol. 37(2), pages 93-111, August.

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