Please use this identifier to cite or link to this item:
Title: Greater Adherence to Secondary Prevention Medications Improves Survival After Stroke or Transient Ischemic Attack: A Linked Registry Study.
Austin Authors: Dalli, Lachlan L;Kim, Joosup;Cadilhac, Dominique A;Greenland, Melanie;Sanfilippo, Frank M;Andrew, Nadine E;Thrift, Amanda G;Grimley, Rohan;Lindley, Richard I;Sundararajan, Vijaya;Crompton, Douglas E;Lannin, Natasha A;Anderson, Craig S;Whiley, Leanne;Kilkenny, Monique F
Affiliation: Alfred Health, Melbourne, VIC, Australia
Sunshine Coast Clinical School, School of Medicine, Griffith University, Birtinya, QLD, Australia
Stroke and Ageing Research, Department of Medicine, School of Clinical Sciences at Monash Health, Central Clinical School, Monash University, VIC, Australia
Peninsula Clinical School, Central Clinical School, Monash University, VIC, Australia
Department of Neuroscience, Central Clinical School, Monash University, VIC, Australia
Oxford Vaccine Group, Department of Paediatrics, Centre for Clinical Vaccinology and Tropical Medicine, Churchill Hospital, United Kingdom
Nuffield Department of Population Health, Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, United Kingdom
School of Population and Global Health, The University of Western Australia, Perth
Faculty of Medicine and Health, The University of Sydney, NSW, Australia
Department of Public Health, La Trobe University, Bundoora, VIC, Australia
Department of Neurology, Northern Health, Epping, VIC, Australia
The George Institute for Global Health, Sydney, NSW, Australia
The George Institute for Global Health, Peking University Health Science Center, China
Rockhampton Hospital, QLD, Australia
The Florey Institute of Neuroscience and Mental Health
Issue Date: 28-Jul-2021 2021-07-28
Publication information: Stroke 2021; 52(11): 3569-3577
Abstract: Although a target of 80% medication adherence is commonly cited, it is unclear whether greater adherence improves survival after stroke or transient ischemic attack (TIA). We investigated associations between medication adherence during the first year postdischarge, and mortality up to 3 years, to provide evidence-based targets for medication adherence. Retrospective cohort study of 1-year survivors of first-ever stroke or TIA, aged ≥18 years, from the Australian Stroke Clinical Registry (July 2010-June 2014) linked with nationwide prescription refill and mortality data (until August 2017). Adherence to antihypertensive agents, statins, and nonaspirin antithrombotic medications was based on the proportion of days covered from discharge until 1 year. Cox regression with restricted cubic splines was used to investigate nonlinear relationships between medication adherence and all-cause mortality (to 3 years postdischarge). Models were adjusted for age, sex, socioeconomic position, stroke factors, primary care factors, and concomitant medication use. Among 8363 one-year survivors of first-ever stroke or TIA (44% aged ≥75 years, 44% female, 18% TIA), 75% were supplied antihypertensive agents. In patients without intracerebral hemorrhage (N=7446), 84% were supplied statins, and 65% were supplied nonaspirin antithrombotic medications. Median adherence was ≈90% for each medication group. Between 1% and 100% adherence, greater adherence to statins or antihypertensive agents, but not nonaspirin antithrombotic agents, was associated with improved survival. When restricted to linear regions above 60% adherence, each 10% increase in adherence was associated with a reduction in all-cause mortality of 13% for antihypertensive agents (hazard ratio, 0.87 [95% CI, 0.81-0.95]), 13% for statins (hazard ratio, 0.87 [95% CI, 0.80-0.95]), and 15% for nonaspirin antithrombotic agents (hazard ratio, 0.85 [95% CI, 0.79-0.93]). Greater levels of medication adherence after stroke or TIA are associated with improved survival, even among patients with near-perfect adherence. Interventions to improve medication adherence are needed to maximize survival poststroke.
DOI: 10.1161/STROKEAHA.120.033133
PubMed URL: 34315251
Type: Journal Article
Subjects: antihypertensive agents
cerebral hemorrhage
medication adherence
secondary prevention
Appears in Collections:Journal articles

Show full item record

Google ScholarTM


Items in AHRO are protected by copyright, with all rights reserved, unless otherwise indicated.