Statistical analysis:
Data were analyzed by using version 26 of SPSS software. The analysis
includes basic descriptive statistics (frequencies and percentages), and
Chi-square test. Chi-square test was performed to assess the association
between categorical variables and knowledge score at the 5 percent
significance level (p< 0.05). The knowledge level was divided
into two groups after summation of total score: high knowledge (if total
score is equal to or more than the mean total score), and poor (if total
score is less than mean total score).