Triple strength utility of the Modified Drug Adherence Work-Up (M-DRAW) tool in a veterans affairs outpatient diabetes clinic.
Journal: 2019/October - Research in social & administrative pharmacy : RSAP
ISSN: 1934-8150
Abstract:
The purpose of this study was to test the psychometric properties of the M-DRAW tool and to examine its applicability and utility at a primary clinic setting in patients with diabetes.A prospective, pre-post interview design study was conducted at the VA Loma Linda Health System (VALLHS) from 03/2017-03/2018. Eligibility criteria consisted of English-speaking patrons who were 18 years and older, diagnosed with Type 2 diabetes mellitus, residing in non-institutional setting, and having 1 + prescriptions for diabetes. A priming question about self-reported adherence was used to assign participants to control (Group A) or intervention (Group N). Pharmacist-led interventions were thus directed to those who recognized their medication nonadherence issue. The M-DRAW tool consisted of 13 statements about barriers to adherence on a 4-point frequency scale. A "3 = sometimes" or "4 = often" on each item indicated a barrier to adherence that was then addressed using the GUIDE strategy using motivational interviewing with the participant.Of the 200 eligible individuals, 88 participants completed both baseline and follow-up assessments (Group A, n = 63; Group N, n = 25). Participants were male (98.8%), taking 7-8 medications on average, and using insulin (79.5%). The tool yielded good internal consistency (Cronbach's alpha = 0.873). Using confirmatory factor analysis, four factors were extracted with items loading as hypothesized. At baseline, group N identified three times greater number of barriers from the M-DRAW tool compared to Group A (5.1 items vs. 1.7, p < 0.05). At 3-month follow-up, a decrease in the number of barriers was observed among Group N. Both PDC and HbA1c did not result in statistically significant reduction in pre-post change.The M-DRAW tool is shown to be reliable and valid. A tailored intervention reduced the number of barriers contributing to medication nonadherence and resulted in a trend of improved clinical outcomes.
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