Descriptive statistical analysis was performed for each variable. The mean and standard deviation ± SD were calculated for each continuous variable and the median and interquartile range IQR was calculated for each variable with an abnormal distribution.
Se realizó un análisis estadístico descriptivo para cada variable, calculando media, con desviaciones estándar ±DE, para variables continuas y mediana, con rango intercuartílico RIC, para variables de distribución no normal.