{"id":38132,"date":"1998-08-05T00:00:00","date_gmt":"1998-08-05T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/procesos-de-markov-en-analisis-de-supervivencia\/"},"modified":"1998-08-05T00:00:00","modified_gmt":"1998-08-05T00:00:00","slug":"procesos-de-markov-en-analisis-de-supervivencia","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/matematicas\/procesos-de-markov-en-analisis-de-supervivencia\/","title":{"rendered":"Procesos de markov en analisis de supervivencia."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Juan  Eloy Ruiz Castro <\/strong><\/h2>\n<p>En esta memoria se estudian los procesos de markov como modelos para analizar la evoluci\u00f3n del c\u00e1ncer de mama a partir de un conjunto de datos observados de tiempos de vida. En el cap\u00edtulo i se considera un proceso de markov homog\u00e9neo y se calculan las magnitudes de mayor inter\u00e9s en an\u00e1lisis de supervivencia. Los resultados obtenidos no se ajustan bien al conjunto de datos, por ello se contrasta la hip\u00f3tesis de homogeneidad y se concluye que \u00e9stos se comportan de modo no homog\u00e9neo. En los cap\u00edtulos ii y iii se dan dos aproximaciones a la no homogeneidad.  en el cap\u00edtulo ii se desarrolla el proceso no homog\u00e9neo escalonado subdividiendo la recta de tiempos en intervalos de homogeneidad. En el cap\u00edtulo iii se considera un proceso de markov no homog\u00e9neo con intensidades de transici\u00f3n potenciales.  en todos los cap\u00edtulos se sigue la misma metodolog\u00eda, se calculan las probabilidades de transici\u00f3n, las funciones de verosimilitud, funciones de supervivencia y distintas tablas de vida. Se incorporan vectores de covariables multidimensionales y se reitera el proceso, contrastando la bondad del ajuste de las curvas de supervivencia para distintos grupos de riesgo. Se han comparado los resultados obtenidos en los tres cap\u00edtulos concluyendo que el modelo que mejor describe la evoluci\u00f3n de la enfermedad en el transcurso del tiempo es el no homog\u00e9neo escalonado.  para la aplicaci\u00f3n del trabajo al conjunto de datos se han desarrollado programas computacionales originales con los paquetes matlab, mathematica, statgraphics y bmdp que implementan el contenido de la memoria en su totalidad.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Procesos de markov en analisis de supervivencia.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Procesos de markov en analisis de supervivencia. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Juan  Eloy Ruiz Castro <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Granada<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 08\/05\/1998<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Rafael P\u00e9rez Oc\u00f3n<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: ram\u00f3n Guti\u00e9rrez Jaimez <\/li>\n<li>Jos\u00e9 Mar\u00eda Ruiz gomez (vocal)<\/li>\n<li>Juan Ferr\u00e1ndiz ferragud (vocal)<\/li>\n<li>leandro Pardo llorente (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Juan Eloy Ruiz Castro En esta memoria se estudian los procesos de markov como modelos para analizar [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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