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The collected data were entered in MS Excel 2007 and converted in a statistical software package (SPSS for Windows version 11.0; SPSS Inc., Chicago, IL, USA). The available data, only for patients who had completed the study, were analyzed using statistical descriptive indices of central tendency and dispersion (means and SDs). For inferential statistics, chi-square test was used. Paired t-test and independent t-test were applied to find out the significant difference between the groups and within the group. The level of significance was considered p<0.05 where CI 95%.

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