1. Clinical Decision Support to Address Racial Disparities in Hypertension Control in an Integrated Delivery System: Evaluation of a Natural Experiment
- Author
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Marshall, Cassondra, Adams, Alyce S, Ma, Lin, Altschuler, Andrea, Lin, Mark W, Thompson, Nailah A, and Young, Joseph D
- Subjects
Health Services and Systems ,Public Health ,Health Sciences ,Cardiovascular ,Clinical Research ,Hypertension ,Management of diseases and conditions ,7.3 Management and decision making ,Good Health and Well Being ,Decision Support Systems ,Clinical ,Delivery of Health Care ,Integrated ,Healthcare Disparities ,Humans ,Racial Groups ,Thiazides ,Health services and systems - Abstract
IntroductionEffective, equity-promoting interventions implemented by health care systems are needed to address health care disparities and population-level health disparities. We evaluated the impact of a clinical decision support tool to improve evidence-based thiazide diuretic prescribing among Black patients to address racial disparities in hypertension control.MethodsWe employed an interrupted time series design and qualitative interviews to evaluate the implementation of the tool. Our primary outcome measure was the monthly rate of thiazide use among eligible patients before and after implementation of the tool (January 2013-December 2016). We modeled month-to-month changes in thiazide use for Black and White patients, overall, and by sex and medical center racial composition. We conducted key informant interviews to identify modifiable facilitators and barriers to implementation of the tool across medical centers.ResultsOf the 318,720 patients, 15.5% were Black. We observed no change in thiazide use or blood pressure control following the implementation of the tool in either racial subgroup. There was a slight but statistically significant reduction (2.32 percentage points, p < 0.01) in thiazide use among Black patients following the removal the tool that was not observed among White patients. Factors affecting the tool's implementation included physician and pharmacist resistance to thiazide use and a lack of ongoing promotion of the tool.DiscussionThe clinical decision support tool was insufficient to change prescribing practices and improve blood pressure control among Black patients.ConclusionsFuture interventions should consider physician attitudes about thiazide prescribing and the importance of multilevel approaches to address hypertension disparities.
- Published
- 2022