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A Bayesian semiparametric method for analyzing length-biased data

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  • Nusrat Harun
  • Bo Cai
  • Yu Shen

Abstract

Survival data obtained from prevalent cohort study designs are often subject to length-biased sampling. Frequentist methods including estimating equation approaches, as well as full likelihood methods, are available for assessing covariate effects on survival from such data. Bayesian methods allow a perspective of probability interpretation for the parameters of interest, and may easily provide the predictive distribution for future observations while incorporating weak prior knowledge on the baseline hazard function. There is lack of Bayesian methods for analyzing length-biased data. In this paper, we propose Bayesian methods for analyzing length-biased data under a proportional hazards model. The prior distribution for the cumulative hazard function is specified semiparametrically using I-Splines. Bayesian conditional and full likelihood approaches are developed for analyzing simulated and real data.

Suggested Citation

  • Nusrat Harun & Bo Cai & Yu Shen, 2021. "A Bayesian semiparametric method for analyzing length-biased data," Journal of Applied Statistics, Taylor & Francis Journals, vol. 48(6), pages 977-992, April.
    • Handle: RePEc:taf:japsta:v:48:y:2021:i:6:p:977-992
    DOI: 10.1080/02664763.2020.1753028
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