2.8. Data Analysis
Statistical analyses were implemented using the SPSS Statistics software version 23.0 (IBM Corp, N.Y., USA). The significance level (type I error) was set to 0.05. The reliability of the statistical analysis was verified by checking the design assumptions of normality, homogeneity of variance, and continuity of data. To ensure that the normalcy assumption is true, a Kolmogorov-Smirnova test was performed [