Statistical Analysis
The collected data were processed and coded before being analyzed using
the IBM SPSS program (Statistical Package for Social Sciences) for
Windows Version 20.0. Qualitative data are presented using frequencies
and related percentages. Quantitative data are presented using means and
standard deviations. An independent samples t-test was used to compare
the difference in parametric variables between two independent means of
two groups. ANOVA was performed to compare quantitative variables among
three categories. The chi-squared or Fisher’s exact test was performed
for qualitative variable analysis. The statistical methods were
verified, assuming a significance level of p <0.05.