Abstract P326: Patient Predictors of Antihypertensive Medications Prescription Classes Revealed by the All of Us Research Project (AOURP) Registry

Abstract

Hypertension (HTN) treatment guidelines recommend five general classes (ACEi, ARB, CCB, diuretics, beta-blockers) of medications with minimal guidance regarding specific classes for different types of patients. Understanding heterogeneity in HTN treatment and demographic and clinical traits of individuals receiving different medication classes may provide insights into outcome disparities and enable the development of more tailored treatment recommendations. Using EHR data from the national All of Us Research Project (AOURP) registry, we examined patient predictors of first-line HTN medication class usage. From the AOURP we selected: 1) patients aged 18+ and diagnosed with new-onset HTN between 2010 and 2021 which is determined by having no HTN medication prescription prior to diagnosis date; 2) patients not pregnant within a year before and after the HTN diagnosis. We restricted our analyses to individuals receiving routine care within the EHR database as defined by having at least one in-person visit in the year prior to the first HTN diagnosis and prescribed with a single class of HTN medications within a year of their HTN diagnosis. We performed multivariate regression analysis on the outcome of whether a certain class of first-line medication was prescribed another class. Our covariates include age, sex, race/ethnicity, comorbidities (diabetes, CVD, CKD), and household income. All reported odds ratios below have a p-value of less than 0.05. Among 5,521 AOURP participants, ACEi was the most prescribed class (29%), followed by CCB (23%), Diuretic (22%), Beta-blocker (17%), and ARB (9%). We found ACEi were more likely to prescribed for females (OR: 0.74) while diuretics were less likely to be prescribed for males (OR: 1.45). We found CCB (OR: 2.73) and diuretics (OR: 1.54) were more likely to be prescribed for Blacks than their White counterparts. We also found that ACEi (OR: 2.75) were more likely prescribed for diabetics. In terms of household income, we found that ARB (OR: 1.67) were prescribed more frequently for those in higher income brackets (<$25,000 vs $100,000+) compared to other classes of medication. This corresponds to the fact that ARB are relatively newer and more expensive class of HTN medications. Our findings show that although there are levels of clinical equipoise in terms of prescribed medication classes among the general population, evidence-based guidance on personalized antihypertension treatments may be needed.