Participant flow
In this clinical trial study, a total of fifty-one participants were screened, and nine were excluded either for not meeting the inclusion criteria or declined to take part in this study. The remaining forty-two patients were recruited and randomly divided into test and control groups. The study flow diagram following CONSORT guidelines has been shown in Fig. The mean age was 29.10 and 28.48 in experimental and control groups, respectively, and according to the Mann-Whitney test, there was no significant difference between the two groups (p = 0.940). Moreover, based on the Mann-Whitney test, there was no significant difference between the two groups regarding gender distribution (p = 1.333). In terms of distribution of smoking, the rate was higher in the intervention group than the control group, which was not statistically significant based on the results of Fisher’s test (23.8% Vs 19%; p = 0.707).