Spss statistics for windows version 25 2017

IBM's Statistical Package for the Social Sciences (SPSS) statistics for Windows (version 25, 2017) (IBM corporation, Armonk, NY, USA) was used for the statistical analysis of the collected data. Shapiro–Wilk test was used to check the normality of the data distribution. Quantitative variables were expressed as mean and standard deviation, whereas categorical variables were expressed as frequency and percentage. Independent sample T and Mann − Whitney tests were used for the comparison of parametric and nonparametric continuous data, respectively. For pair-wise comparison of data (within-subjects), the follow-up values were compared to their corresponding basal value using the paired samples t-test or Wilcoxon matched-pairs signed-ranks test. Fisher exact and Chi-square tests were used for inter-group comparison of nominal data using the crosstabs function.

IBM's Statistical Package for the Social Sciences (SPSS) statistics for Windows (version 25, 2017) (IBM corporation, Armonk, NY, USA) was used for statistical analysis of the collected data. Shapiro–Wilk test was used to check the normality of the data distribution. All tests were conducted with 95% confidence interval. P (probability) value <0.05 was considered statistically significant. Charts were generated using SPSS chart builder and Microsoft Excel for Windows 2019. Quantitative variables were expressed as mean and standard deviation while categorical variables were expressed as frequency and percentage. Independent sample t-test and Mann–Whitney test were used for intergroup (between subjects) comparison of parametric and nonparametric continuous data with no follow-up readings respectively. For pair-wise comparison of data (within subjects), the follow-up values were compared to their corresponding basal value using paired samples t-test or Wilcoxon matched-pairs signed-ranks test. Fisher's exact and Chi-square tests were used for intergroup comparison of nominal data using the crosstab function.