Median regression with censored cost data

Heejung Bang, Anastasios A. Tsiatis

Research output: Contribution to journalArticle

116 Scopus citations

Abstract

Because of the skewness of the distribution of medical costs, we consider modeling the median as well as other quantiles when establishing regression relationships to covariates. In many applications, the medical cost data are also right censored. In this article, we propose semiparametric procedures for estimating the parameters in median regression models based on weighted estimating equations when censoring is present. Numerical studies are conducted to show that our estimators perform well with small samples and the resulting inference is reliable in circumstances of practical importance. The methods are applied to a dataset for medical costs of patients with colorectal cancer.

Original languageEnglish (US)
Pages (from-to)643-649
Number of pages7
JournalBiometrics
Volume58
Issue number3
StatePublished - Sep 2002
Externally publishedYes

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Keywords

  • Cost analysis
  • Estimating equation
  • Median regression
  • Simulated annealing
  • Survival analysis

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Public Health, Environmental and Occupational Health
  • Agricultural and Biological Sciences (miscellaneous)
  • Applied Mathematics
  • Statistics and Probability

Cite this

Bang, H., & Tsiatis, A. A. (2002). Median regression with censored cost data. Biometrics, 58(3), 643-649.