Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/11862
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Campo DC | Valor | Idioma |
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dc.contributor.author | Machado, Luís Meira | - |
dc.contributor.author | Kneib, Thomas | - |
dc.contributor.author | Gude, Francisco | - |
dc.contributor.author | Cardarso-Suarez, Carmen | - |
dc.date.accessioned | 2011-03-11T09:56:55Z | - |
dc.date.available | 2011-03-11T09:56:55Z | - |
dc.date.issued | 2010-10 | - |
dc.identifier.citation | Cadarso-Suárez, C., Meira-Machado, L., Kneib, T., & Gude, F. (2010, September 28). Flexible hazard ratio curves for continuous predictors in multi-state models. Statistical Modelling. SAGE Publications. http://doi.org/10.1177/1471082x0801000303 | por |
dc.identifier.issn | 1471-082X | por |
dc.identifier.uri | https://hdl.handle.net/1822/11862 | - |
dc.description.abstract | Multi-state models (MSMs) are very useful for describing complicated event history data. These models may be considered a generalization of survival analysis where survival is the ultimate outcome of interest but where intermediate (transient) states are identified. One major goal in clinical applications of multi-state models is to study the relationship between the different covariates and disease evolution. Usually, MSMs are assumed to be parametric, and the effects of continuous predictors on log-hazards are modeled linearly. In practice, however, the effect of a given continuous predictor can be unknown, and its form may be different in all permitted transitions. In this paper, we propose a P-spline approach that allows for non-linear relationships between continuous predictors and survival in the multi-state framework. To better understand the effects that each continuous covariate has on the outcome at each transition, results are expressed in terms of hazard ratio curves, taking a specific covariate value as reference. Confidence bands for these curves are also derived. The proposed methodology was applied to a database on breast cancer, using a progressive three-state model, and the results were compared against those obtained through the traditional Cox regression model. This application revealed hitherto unreported effects: whereas DNA index is only an important nonlinear predictor of recurrence, the percentage of cells in phase S is a significant predictor of both recurrence and mortality. All analyses were performed using software written by the authors. | por |
dc.description.sponsorship | Spanish Ministry of Education & Science - grant MTM2005-00818 | por |
dc.description.sponsorship | European FEDER | por |
dc.description.sponsorship | Galician Regional Authority (Xunta de Galicia) - grant PGIDIT06PXIC208043PN | por |
dc.language.iso | eng | por |
dc.publisher | SAGE Publications | por |
dc.rights | restrictedAccess | por |
dc.subject | Cox model | por |
dc.subject | Hazard Ratio | por |
dc.subject | Multi-state model | por |
dc.subject | Penalized splines | por |
dc.title | Flexible hazard ratio curves for continuous predictors in multi-state models: application to breast cancer data | eng |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://journals.sagepub.com/doi/10.1177/1471082X0801000303 | - |
sdum.number | 3 | por |
sdum.pagination | 291-314 | por |
sdum.publicationstatus | published | por |
sdum.volume | 10 | por |
oaire.citationStartPage | 291 | por |
oaire.citationEndPage | 314 | por |
oaire.citationIssue | 3 | por |
oaire.citationTitle | Statistical Modelling | por |
oaire.citationVolume | 10 | por |
dc.identifier.doi | 10.1177/1471082X0801000303 | - |
dc.subject.wos | Science & Technology | por |
sdum.journal | Statistical Modelling | por |
Aparece nas coleções: | CMAT - Artigos em revistas com arbitragem / Papers in peer review journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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STATMOD_2010.pdf Acesso restrito! | Documento com abstract e referências | 51,7 kB | Adobe PDF | Ver/Abrir |
SM_2010.pdf Acesso restrito! | Paper completo | 592,78 kB | Adobe PDF | Ver/Abrir |