Statistical Analysis
The data of the demographic variables were tabulated in the spreadsheet
of the Microsoft Excel 2010 program. The data is expressed as the mean ±
standard deviation. The independent t- test was used to compare
the study groups. The paired t- test was used to compare the
variables before and after the intervention. A P value of less
than 0,05 was considered statistically significant. The package
IBM SPSS Statistics 20 (SPSS Inc., Chicago, IL, USA) was used for
statistical analysis.