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| Content Provider | Springer Nature Link |
|---|---|
| Author | Maruotti, Antonello |
| Copyright Year | 2014 |
| Abstract | We illustrate a class of conditional models for the analysis of longitudinal data suffering attrition in random effects models framework, where the subject-specific random effects are assumed to be discrete and to follow a time-dependent latent process. The latent process accounts for unobserved heterogeneity and correlation between individuals in a dynamic fashion, and for dependence between the observed process and the missing data mechanism. Of particular interest is the case where the missing mechanism is non-ignorable. To deal with the topic we introduce a conditional to dropout model. A shape change in the random effects distribution is considered by directly modeling the effect of the missing data process on the evolution of the latent structure. To estimate the resulting model, we rely on the conditional maximum likelihood approach and for this aim we outline an EM algorithm. The proposal is illustrated via simulations and then applied on a dataset concerning skin cancers. Comparisons with other well-established methods are provided as well. |
| Starting Page | 84 |
| Ending Page | 109 |
| Page Count | 26 |
| File Format | |
| ISSN | 11330686 |
| Journal | Test |
| Volume Number | 24 |
| Issue Number | 1 |
| e-ISSN | 18638260 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2014-08-24 |
| Publisher Institution | Spanish Society of Statistics and Operations Research |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Hidden Markov chains Conditional maximum likelihood Non-ignorable missingness Longitudinal data Skin cancer Generalized linear models Applications of Markov chains and discrete-time Markov processes on general state spaces Applications to biology and medical sciences Statistics Statistical Theory and Methods Statistics for Business/Economics/Mathematical Finance/Insurance |
| Content Type | Text |
| Resource Type | Article |
| Subject | Statistics and Probability Statistics, Probability and Uncertainty |
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