Application of SPSS 19 statistical software. Measurement data were expressed as mean ± standard deviation.
First the data is normality tested and homogeneity of variance tested, according to the measurement data of normal distribution by SNK single factor analysis of variance; does not conform to the normal distribution of measurement data, using the Kruskal Wallis non parametric test. P \< 0.05 for the difference was statistically significant.
