Results
In total, 316 participants were enrolled and randomized into intervention (n=158) and control (n=158) groups. However, 41 participants (22 participants in the intervention group and 19 participants in the control group) did not complete the follow-up survey. The overall dropout rate was 13.0%, (41/316), and there was no significant difference in the dropout rate between the intervention group and control group. CONSORT flow diagram.