The study applies HBM in the context of the Shahid Rajaee center of Heart Research in Tehran. This center works with heart-failure patients and is a perfect place for research with such a narrow focus.
This study measures 9 constructs of HBM that are presented by perceived susceptibility, perceived threat, knowledge, perceived benefits, perceived severity, self-efficacy, perceived barriers, cues to action and self- behavior. These 9 constructs comprehensively examine the issue and let researcher make useful conclusions from their study. It took place during the year in 2008. All data were collected before the intervention and two month after its implementation to check its effectiveness in the case group and compare the results with the control group.
All data were collected at the Shahid Rajaee center of Heart Research in Tehran. This center is quite big; the researchers could involve enough participants in both case and control groups of the study. The total number of participants in the study was 180. 90 people were in the case group where the intervention was implemented and 90 people were in the control group where nothing was changed. All participants were randomly selected from all patients with heart who suffered from heart failure and received treatment at the center.
The researchers used questionnaire with 69 questions to collect all necessary data. The questions addressed all 9 constructs of HBM researchers wanted to measure and compare in the control and case groups of patients. The researchers conducted a pilot testing of the questionnaire to make sure that is was clear and consistent. The pilot tenting included 20 respondents who did not participate either in case group or in control group. The results of the questionnaire were measured with the help of ration scale. Percentages and rations