Heterogeneity in survival analysis.

  title={Heterogeneity in survival analysis.},
  author={Odd Olai Aalen},
  journal={Statistics in medicine},
  volume={7 11},
I discuss the impact of individual heterogeneity in survival analysis. It is well known that this phenomenon may distort what is observed. A general class of mixing (or frailty) distributions is applied, extending a model of Hougaard. The extension allows part of the population to be non-susceptible, and contains the traditional gamma distribution as a special case. I consider the mixing of both a constant and a Weibull individual rate, and also discuss the comparison of rates from two… CONTINUE READING
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