The SPSS 17.0 Statistical Package for the Social Science was used in the analysis, and data were expressed as percentage, and mean and standard deviation.
El Software utilizado para el análisis fue el SPSS 17.0 Statistical Package for the Social Science y los datos estaban expresados en un porcentaje promedio y desviación estándar.
O software utilizado para a análise foi o SPSS 17.0 Statistical Package for the Social Science e os dados foram expressos em percentual, média e desvio-padrão.