The statistical calculations were carried out using the statistical software Statistical Package for the Social Sciences SPSS for Windows, release 10.0.
Los cálculos estadísticos fueron realizados en el software estadístico Statistical Package for the Social Sciences SPSS para Windows, versión 10.0.
Os cálculos estatísticos foram realizados no software estatístico Statistical Package for the Social Sciences SPSS para Windows, versão 10.0.