The data were analyzed using the statistical package "SPSS for Windows", release 8.0.0, Copyright SPSS Inc.
Los datos se analizaron a través del programa estadístico "SPSS for Windows", versión 8.0.0, Copyright SPSS Inc.
Os dados foram analisados através do programa estatístico "SPSS for Windows", versão 8.0.0, Copyright SPSS Inc.