The Annals of Statistics
- Ann. Statist.
- Volume 36, Number 3 (2008), 1064-1089.
Current status data with competing risks: Limiting distribution of the MLE
We study nonparametric estimation for current status data with competing risks. Our main interest is in the nonparametric maximum likelihood estimator (MLE), and for comparison we also consider a simpler “naive estimator.” Groeneboom, Maathuis and Wellner [Ann. Statist. (2008) 36 1031–1063] proved that both types of estimators converge globally and locally at rate n1/3. We use these results to derive the local limiting distributions of the estimators. The limiting distribution of the naive estimator is given by the slopes of the convex minorants of correlated Brownian motion processes with parabolic drifts. The limiting distribution of the MLE involves a new self-induced limiting process. Finally, we present a simulation study showing that the MLE is superior to the naive estimator in terms of mean squared error, both for small sample sizes and asymptotically.
Ann. Statist. Volume 36, Number 3 (2008), 1064-1089.
First available in Project Euclid: 26 May 2008
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Groeneboom, Piet; Maathuis, Marloes H.; Wellner, Jon A. Current status data with competing risks: Limiting distribution of the MLE. Ann. Statist. 36 (2008), no. 3, 1064--1089. doi:10.1214/009053607000000983. https://projecteuclid.org/euclid.aos/1211819556