Asociación entre variables cuantitativas: análisis de correlación
Fecha
2010-03-09
Autores
Camacho Sandoval, Jorge
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Editor
Colegio de Médicos y Cirujanos, Costa Rica
Resumen
En la investigación clínica frecuentemente se miden numerosas variables en los individuos incluidos en el estudio. Muchas veces interesa determinar si existe relación entre algunas de esas variables, o predecir el valor de una de ellas conociendo el valor de otras. En ocasiones interesa determinar si distintos instrumentos, métodos o personas obtienen valores similares cuando se mide una variable en las mismas unidades experimentales. Esos tres objetivos requieren métodos de análisis distintos. La presente nota se refiere al primer objetivo: determinar si existe asociación entre variables.
In clinical research, numerous variables are frequently measured in the individuals included in the study. Many times it is interesting to determine if there is a relationship between some of these variables, or to predict the value of one of them knowing the value of others. Sometimes it is interesting to determine whether different instruments, methods or people obtain similar values when a variable is measured in the same experimental units. These three objectives require different methods of analysis. This note refers to the first objective: to determine if there is an association between variables.
In clinical research, numerous variables are frequently measured in the individuals included in the study. Many times it is interesting to determine if there is a relationship between some of these variables, or to predict the value of one of them knowing the value of others. Sometimes it is interesting to determine whether different instruments, methods or people obtain similar values when a variable is measured in the same experimental units. These three objectives require different methods of analysis. This note refers to the first objective: to determine if there is an association between variables.
Descripción
Notas estadísticas de la investigación realizada por el máster Jorge Camacho Sandoval
Palabras clave
ESTADÍSTICA, DIAGNÓSTICO (MEDICINA VETERINARIA), ATENCIÓN MÉDICA, VARIABLES, ANÁLISIS DE DATOS, STATISTICS, DIAGNOSIS (VETERINARY MEDICINE), MEDICAL ATTENTION, ANALYSIS OF DATA