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Vol. 42. Num. 6.August - September 2018
Pages e13-e16Pages 327-396
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Vol. 42. Num. 6.August - September 2018
Pages e13-e16Pages 327-396
SERIES IN INTENSIVE MEDICINE: METHODOLOGICAL UPDATE IN MEDICINA INTENSIVA
DOI: 10.1016/j.medine.2018.05.005
Interpretation of statistical results
Interpretación de resultados estadísticos
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J.L. García Garmendia
Corresponding author
joseluis.garciagarmendia@sjd.es

Corresponding author.
, F. Maroto Monserrat
Unidad de Cuidados Intensivos, Servicio de Cuidados Críticos y Urgencias, Hospital San Juan de Dios del Aljarafe, Bormujos, Sevilla, Spain
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Table 1. Common errors when interpreting statistical results.
Table 2. Common biases in clinical research.
Table 3. Bradford Hill criteria for causation.
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Abstract

The appropriate interpretation of the statistical results is crucial to understand the advances in medical science. The statistical tools allow us to transform the uncertainty and apparent chaos in nature to measurable parameters which are applicable to our clinical practice. The importance of understanding the meaning and actual extent of these instruments is essential for researchers, the funders of research and for professionals who require a permanent update based on good evidence and supports to decision making. Various aspects of the designs, results and statistical analysis are reviewed, trying to facilitate his comprehension from the basics to what is most common but no better understood, and bringing a constructive, non-exhaustive but realistic look.

Keywords:
Statistical analysis
Methodology
Bias
Misinterpretation
Resumen

La interpretación de los resultados estadísticos es un elemento crucial para la comprensión de los avances en las ciencias médicas. Las herramientas que nos ofrece la estadística nos permiten transformar la incertidumbre y aparente caos de la naturaleza en parámetros medibles y aplicables a nuestra práctica clínica. La importancia de entender el significado y alcance real de estos instrumentos es fundamental para el investigador, para los financiadores de las investigaciones y para los profesionales que precisan de una actualización permanente basada en buena evidencia y ayudas a la toma de decisiones. Se repasan diversos aspectos de los diseños, resultados y análisis estadísticos, intentando facilitar su entendimiento desde lo más elemental a aquello que es más común pero no por ello mejor comprendido y aportar una mirada constructiva y realista, sin ser exhaustiva.

Palabras clave:
Análisis estadístico
Metodología
Sesgo
Interpretación errónea

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