Change in the scores of variables in the HBM.

Note: Analysis of covariance was conducted to evaluation the effect of intervention on the scores of susceptibility, severity, subjective barriers, objective barriers, knowledge, and cues to action, the final scores of which were expressed as means±standard error, and the baseline scores of which were expressed as the corrected value. Because the data of benefits and self-efficacy did not meet the requirements for analysis of covariance, analysis of variance was conducted to evaluation the effect of intervention on the two variables, the baseline and final score of which were expressed as means±standard deviation.