Statistical analysis
REGRESSION
After the data collection and checking were complete, the finalized debugged files were linked as a full dataset for statistical analysis with JMP statistical software (version 11, SAS Institute Inc. Cary, North Carolina, U.S.). Data were presented in frequency distribution tables and as percentages, means, and standard deviations. Considering the distribution of SBTC data, nonparametric statistical methods and base 2–log-transformed data were used to identify differences in the numerical data. Linear regression analysis was conducted to assess the factors contributing to percentage changes in SBTC after the intervention.