Kailin L Hsu1, Jeffrey C Fink2, Jennifer S Ginsberg1, Marni Yoffe1, Min Zhan3, Wanda Fink1, Corinne M Woods4, Clarissa J Diamantidis5. 1. Department of Medicine, University of Maryland School of Medicine, Baltimore, MD. 2. Department of Medicine, University of Maryland School of Medicine, Baltimore, MD; Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD; Department of Medicine, Veterans Affairs Maryland Health Care System, Baltimore, MD. 3. Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD. 4. University of Maryland School of Pharmacy, Baltimore, MD. 5. Department of Medicine, Duke University School of Medicine, Durham, NC; Department of Medicine, Durham Veterans Affairs Medical Center, Durham, NC. Electronic address: clarissa.diamantidis@duke.edu.
Abstract
BACKGROUND: Promoting medication adherence is a recognized challenge for prescribers. In this study, we examine whether lower medication adherence is associated with adverse safety events in individuals with decreased estimated glomerular filtration rates (eGFRs). STUDY DESIGN: Cross-sectional baseline analysis of prospective cohort. SETTING & PARTICIPANTS: Baseline analysis of the Safe Kidney Care (SKC) Cohort Study, a prospective study of individuals with eGFRs<60 mL/min/1.73 m(2) intended to assess the incidence of disease-specific safety events. Kidney transplant recipients were excluded. PREDICTOR: Self-reported medication adherence based on responses to 3 questions ascertaining degree of medication regimen adherence. OUTCOMES: Adverse safety events were self-reported at baseline (class I events), such as hypoglycemia or fall thought to be related to a medication, or detected incidentally during the baseline visit (class II events), for example, hypotension or hyperkalemia. Potential drug-related problems (DRPs) were determined by analyzing participants' medications with respect to dosing guidelines based on their screening eGFRs at the time of medication reporting. MEASUREMENTS: Relationship between medication adherence and disease-specific patient safety events. RESULTS: Of 293 SKC participants, 154 (53%) were classified as having lower medication adherence. After multivariable adjustment, lower medication adherence was significantly associated with a class I or II safety event (prevalence ratio [PR], 1.21; 95% CI, 1.04-1.41) and potential DRPs (PR, 1.29; 95% CI, 1.02-1.63). Lower medication adherence was also significantly associated with multiple (≥2) class I events (PR, 1.71; 95% CI, 1.18-2.49), multiple class I or II events (PR, 1.35; 95% CI, 1.04-1.76), and multiple potential DRPs (PR, 2.11; 95% CI, 1.08-2.69) compared with those with higher medication adherence. LIMITATIONS: Use of self-reported medication adherence rather than pharmacy records. Clinical relevance of detected safety events is unclear. CONCLUSIONS: Lower medication adherence is associated with adverse safety events in individuals with eGFRs<60 mL/min/1.73 m(2).
BACKGROUND: Promoting medication adherence is a recognized challenge for prescribers. In this study, we examine whether lower medication adherence is associated with adverse safety events in individuals with decreased estimated glomerular filtration rates (eGFRs). STUDY DESIGN: Cross-sectional baseline analysis of prospective cohort. SETTING & PARTICIPANTS: Baseline analysis of the Safe Kidney Care (SKC) Cohort Study, a prospective study of individuals with eGFRs<60 mL/min/1.73 m(2) intended to assess the incidence of disease-specific safety events. Kidney transplant recipients were excluded. PREDICTOR: Self-reported medication adherence based on responses to 3 questions ascertaining degree of medication regimen adherence. OUTCOMES: Adverse safety events were self-reported at baseline (class I events), such as hypoglycemia or fall thought to be related to a medication, or detected incidentally during the baseline visit (class II events), for example, hypotension or hyperkalemia. Potential drug-related problems (DRPs) were determined by analyzing participants' medications with respect to dosing guidelines based on their screening eGFRs at the time of medication reporting. MEASUREMENTS: Relationship between medication adherence and disease-specific patient safety events. RESULTS: Of 293 SKCparticipants, 154 (53%) were classified as having lower medication adherence. After multivariable adjustment, lower medication adherence was significantly associated with a class I or II safety event (prevalence ratio [PR], 1.21; 95% CI, 1.04-1.41) and potential DRPs (PR, 1.29; 95% CI, 1.02-1.63). Lower medication adherence was also significantly associated with multiple (≥2) class I events (PR, 1.71; 95% CI, 1.18-2.49), multiple class I or II events (PR, 1.35; 95% CI, 1.04-1.76), and multiple potential DRPs (PR, 2.11; 95% CI, 1.08-2.69) compared with those with higher medication adherence. LIMITATIONS: Use of self-reported medication adherence rather than pharmacy records. Clinical relevance of detected safety events is unclear. CONCLUSIONS: Lower medication adherence is associated with adverse safety events in individuals with eGFRs<60 mL/min/1.73 m(2).
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