Please use this identifier to cite or link to this item: http://ri-ng.uaq.mx/handle/123456789/741
Title: Diseño estadístico experimental para la discriminación entre dos modelos sobre el comportamiento en la toma de decisión
metadata.dc.creator: WILFRIDO JACOBO PAREDES GARCIA
Keywords: INGENIERÍA Y TECNOLOGÍA;CIENCIAS TECNOLÓGICAS
metadata.dc.date: Jan-2016
Description: Los modelos matemáticos son una herramienta que ha permitido durante siglos entender fenómenos en Física, Química, Biología, Ingeniería, e incluso, procesos como la decisión de las personas. Sin embargo, como en todas las áreas, los modelos representan una forma de percibir la realidad, percepción que cambia de persona a persona y, con ello genera con ello modelos rivales junto con la pregunta de cuál es el mejor modelo para un caso particular de estudio. El proceso de toma de decisión no es la excepción, existen una gran variedad de modelos que se basan en diferentes hipótesis, sin embargo, ninguno de ellos ha sido más usado que el modelo Logit Multinomial (MNL) el cual parte del supuesto que todas las alternativas son igualmente atractivas para el decisor, supuesto que en ocasiones no obedece al verdadero proceso de toma de decisión y es necesario evitarlo mediante el uso de un modelo rival, el modelo Logit Multinomial Anidado (NMNL). El presente trabajo presenta una forma de atacar el problema de confusión entre los modelos (el modelo MNL y el modelo NMNL) mediante la creación de diseños estadísticos óptimos que permitan al investigador conocer las mejores configuraciones de los atributos de las elecciones con el fin de detectar cuál de los dos modelos se ajusta de mejor manera a los datos empíricos recabados.
Introduction. Delirium is a neuropsychiatric syndrome with an acute onset and a fluctuating course characterized by a compromise of consciousness, attention and disorganized thoughts; the origin is often multifactorial. Prevalence in hospitalized patients ranges from 10% to 30%. In the most vulnerable group, hospitalized patients over 65, it can reach 60%. Delirium in hospitalized older adults is associated with an unfavorable evolution. These patients have more complications and intra-hospital mortality. Despite its importance, delirium has traditionally been undervalued and has not been recognized as a disorder that requires a diagnosis and specific treatment. Objective: to determine the prevalence of delirium and its accompanying factors in older patients admitted to the emergency services of the Zone No. 3 General Hospital of San Jan del Río, Querétaro. Methodology: a descriptive study was done of all patients over 60 years of age admitted to the emergency service; the Confusion Assessment Method (CAM) was used as an instrument for the diagnosis of delirium. Different clinical and demographic variables were evaluated: age, gender, cognitive function with the Blessed scale, functionality with the Katz scale, depression, visual and hearing deterioration, admittance diagnosis and co-morbid states, consumption of medications and restrictions. Results: 250 patients were evaluated with a mean age of 72.35+8.23. 28.8% of the sampling studied presented with delirium, in other words, 72 patients, while 178 did not (71.2%). In accordance with the type of delirium, 42 cases (16%) were hypoactive, 19 patients (8%) were hyperactive and a mixture was present in 11 patients (4%). Most frequent in women. Cognitive deterioration was present in 88% of the cases and functional deterioration in 63%. 91% of the patients with delirium suffered from visual deterioration and 80% had a hearing deficit. Discussion. Delirium is a common condition in hospitalized older adults, under-diagnosed. A routine CAM evaluation makes possible the easy identification of delirium. Cognitive and functional deterioration frequently predispose to the presentation of delirium.
URI: http://ri-ng.uaq.mx/handle/123456789/741
Other Identifiers: Choose of soft drink
Differential evolution
Diseño óptimo
Elección de bebidas carbonatadas
Evolución diferencial
Optimal design
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