Effect Of The Information-Motivation-Behavioral Skills Model Based Intervention On Medication Adherence Among People With Bronchial Asthma

Backgroud:Taking inhaled corticosteroid (ICS) is the most important approach in asthma therapy. Despite the efficacy of ICS, asthmatics are not adherent to these medications, with relatively low rates from 30% to 45%. Most interventions which are focused on improving patients’ ICS adherence are not theory-based, ignoring the important role of motivation and self-efficacy. The Information-Motivation-Behavioral Skills model (IMB) can promote health behavior change effectively.Objective:The objective is to examine the effect of the IMB model based intervention on asthma patients’ medication adherence, asthma related knowledge, adherence motivation, inhaler technique skill and adherence self-efficacy.Methods:This was a quasi-experimental study. A total of 96 adult asthma patients were recruited from July to December 2014 in the outpatient department of a tertiary hospital in Beijing by convenience sampling method. The samples were randomly assigned into either an intervention group or to a control group. Patients in the intervention group received IMB model based intervention, including motivational interviewing, asthma knowledge education and demonstrating inhaler technique skill. Patients in the control group received normal health education. All participants completed pretest measures and were reassessed at the end of intervention, one and three months post-intervention.Results:88 patients (43 from the intervention group,45 from the control group) were observed three months post-intervention. Results showed that (1) medication adherence, the level of asthma knowledge, motivation and self-efficacy of the intervention group were significantly improved compared with the baseline (P<0.008) and those of the control group (P<0.05) (2) inhaler technique skill of the intervention group was significantly improved compared with that of the control group(P<0.05).Conclusions:It is effective to use the IMB model to tailor asthma interventions to improve ICS adherence and to enhance patients’knowledge, motivation, and behavior skills needed for inhaled corticosteroid adherence.