Questionnaire scores.
Summary statistics for the questionnaire scores are shown. Data are presented as mean ± standard deviation, median [1The test-retest reliability of the questionnaire computed using data collected from all participants before and immediately after the teaching sessions was 0.77. The test-retest reliability was 0.75 when it was computed using data from the control group only. Barlett’s test of sphericity showed a significant P value <0.001and thus granted appropriateness of factor analysis. Scree plot and parallel analysis of data suggested factor analysis with two factors. This analysis showed that using two factors separated the survey questions in accordance with the understanding and future behavior domains but explained only 19.4% of the variance (S1 Table in The MID of the questionnaire was computed using distribution-based methods as shown in 