[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5351/KJAS.2012.25.3.403

Further Results on Piecewise Constant Hazard Functions in Aalen's Additive Risk Model

Uhm, Dai-Ho (Department of Statistics, Oklahoma State University)
Jun, Sung-Hae (Department of Statistics, Cheongju University)

Publication Information

The Korean Journal of Applied Statistics / v.25, no.3, 2012 , pp. 403-413 More about this Journal

Abstract

The modifications suggested in Uhm et al. (2011) are studied using a partly parametric version of Aalen's additive risk model. A follow-up time period is partitioned into intervals, and hazard functions are estimated as a piecewise constant in each interval. A maximum likelihood estimator by iteratively reweighted least squares and variance estimates are suggested based on the model as well as evaluated by simulations using mean square error and a coverage probability, respectively. In conclusion the modifications are needed when there are a small number of uncensored deaths in an interval to estimate the piecewise constant hazard function.

Keywords

Aalen's additive risk model; piecewise constant; hazard function; weighted least square; survival analysis;

Citations & Related Records

Reference

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