Keywords
renourethral colic
likelihood
lognormal
Weibull
censura
cólico renoureteral
distribución lognormal
distribución weibull
máxima verosimilitud
How to Cite
Abstract
Renourethral colic is a very painful clinical situation that requires a quick diagnosis and treatment. A study was done with patients who were administered two types of analgesics, and whose pain was measured through a visual analogue scale. Censored data results were obtained, considering the time when the pain disappeared as the random variable. Maximum likelihood and survival analysis give useful methods to estimate the distribution and parametric functions for this variable. This study will allow a more effective, timely, lower cost and suitable medical treatment for patients.References
Aragón-Tovar, A.R.; Reyes-Verástegui, F.; Herrera-Guillermos, A. Manjarrez-Estrada, G.; Gutierrez-Peña, C.G. (1994) “Eficacia del bloqueo subcostal como tratamiento del cólico nefrítico”, Revista Mexicana de Uroloǵıa 54(5): 91–98.
Garduño-Arteaga, L.; García-Irigoyen, C.; González-Ramı́rez, R. (1993) “Bloqueo del duodécimo nervio intercostal como tratamiento del cólico renoureteral”, Revista Mexicana de Urología 53(4): 74–9.
Hough, G.; Langohr, K.G.; Gómez, G.; Curia, A. (2003) “Survival analysis applied to sensory shelf life of foods”, J. of Food Sci.: Sensory and Nutritive Qualities of Food. 68(1): 359–362.
Klein, J.P.; Moeschberger, M.L. (2005) Survival Analysis Techniques for Censored and Truncated Data. Springer, New York.
Meeker, W.Q.; Escobar, L.A. (1998) Statistical Methods for Reliability Data. Wiley, New York.
Pérez-Chávez, J.A. (2009) Eficacia Analgésica del Bloqueo del XII Nervio Subcostal contra Metamizol en Pacientes con Cólico Renoureteral en el Servicio de Urgencias del Hospital General de Zona No. 46 IMSS, Villahermosa, Tab. Tesis de Especialidad en Medicina Familiar, UJAT - IMSS. 78 pp.
R Team (2006) R: A Language and Environment for Statistical Computing. R. Foundation for Statistical Computing, Vienna, Austria. ISBN: 3-900051-07-0. www.R-project.org
Ulín-Montejo, F. (2009) “Análisis de datos censurados para ingeniería y ciencias biológicas”, Revista de Matemática: Teoŕıa y Aplicaciones 14(2): 239–250.
Uĺın-Montejo, F.; Salinas-Hernández, R. M. (2009) “Análisis de confiabilidad para la predicción de vida útil de alimentos”, Memoria del XXXIII Foro Nacional de Estadística, 173–180.