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Aebersold H, Foster-Witassek F, Aeschbacher S, Beer JH, Blozik E, Blum M, Bonati L, Conte G, Coslovsky M, De Perna ML, Di Valentino M, Felder S, Huber CA, Moschovitis G, Mueller A, Paladini RE, Reichlin T, Rodondi N, Stauber A, Sticherling C, Szucs TD, Conen D, Kuhne M, Osswald S, Schwenkglenks M, Serra-Burriel M. Patients on vitamin K treatment: is switching to direct-acting oral anticoagulation cost-effective? A target trial on a prospective cohort. Open Heart 2024; 11:e002567. [PMID: 38302139 PMCID: PMC10831440 DOI: 10.1136/openhrt-2023-002567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/18/2024] [Indexed: 02/03/2024] Open
Abstract
AIMS Direct-acting oral anticoagulants (DOACs) have, to a substantial degree, replaced vitamin K antagonists (VKA) as treatments for stroke prevention in atrial fibrillation (AF) patients. However, evidence on the real-world causal effects of switching patients from VKA to DOAC is lacking. We aimed to assess the empirical incremental cost-effectiveness of switching patients to DOAC compared with maintaining VKA treatment. METHODS The target trial approach was applied to the prospective observational Swiss-AF cohort, which enrolled 2415 AF patients from 2014 to 2017. Clinical data, healthcare resource utilisation and EQ-5D-based utilities representing quality of life were collected in yearly follow-ups. Health insurance claims were available for 1024 patients (42.4%). Overall survival, quality-of-life, costs from the Swiss statutory health insurance perspective and cost-effectiveness were estimated by emulating a target trial in which patients were randomly assigned to switch to DOAC or maintain VKA treatment. RESULTS 228 patients switching from VKA to DOAC compared with 563 patients maintaining VKA treatment had no overall survival advantage over a 5-year observation period (HR 0.99, 95% CI 0.45, 1.55). The estimated gain in quality-adjusted life years (QALYs) was 0.003 over the 5-year period at an incremental costs of CHF 23 033 (€ 20 940). The estimated incremental cost-effectiveness ratio was CHF 425 852 (€ 387 138) per QALY gained. CONCLUSIONS Applying a causal inference method to real-world data, we could not demonstrate switching to DOACs to be cost-effective for AF patients with at least 1 year of VKA treatment. Our estimates align with results from a previous randomised trial.
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Affiliation(s)
- Helena Aebersold
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | | | - Stefanie Aeschbacher
- Cardiology Division, Department of Medicine, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Juerg H Beer
- Department of Medicine, Cantonal Hospital of Baden, Baden, Switzerland
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Eva Blozik
- Institute of Primary Care, University of Zurich, Zurich, Switzerland
| | - Manuel Blum
- Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Leo Bonati
- Department of Neurology, University Hospital Basel, Basel, Switzerland
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
| | - Giulio Conte
- Division of Cardiology, Cardiocentro Ticino (CCT), Lugano, Switzerland
| | - Michael Coslovsky
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
- Clinical Trial Unit Basel, Department of Clinical Research, University Hospital Basel, Basel, Switzerland
| | - Maria Luisa De Perna
- Division of Cardiology, Istituto Cardiocentro Ticino, Ospedale Regionale di Bellinzona, Bellinzona, Switzerland
| | - Marcello Di Valentino
- Division of Cardiology, Istituto Cardiocentro Ticino, Ospedale Regionale di Bellinzona, Bellinzona, Switzerland
| | - Stefan Felder
- Faculty of Business and Economics, University of Basel, Basel, Switzerland
| | - Carola A Huber
- Department of Health Sciences, Helsana Group, Zurich, Switzerland
| | - Giorgio Moschovitis
- Division of Cardiology, Ente Ospedaliero Cantonale (EOC), Istituto Cardiocentro Ticino, Ospedale Regionale di Lugano, Lugano, Switzerland
| | - Andreas Mueller
- Department of Cardiology, Triemli Hospital Zurich, Zurich, Switzerland
| | - Rebecca E Paladini
- Cardiology Division, Department of Medicine, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Tobias Reichlin
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Nicolas Rodondi
- Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Annina Stauber
- Department of Cardiology, Triemli Hospital Zurich, Zurich, Switzerland
| | - Christian Sticherling
- Cardiology Division, Department of Medicine, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Thomas D Szucs
- Health Economics Facility, Department of Public Health, University of Basel, Basel, Switzerland
| | - David Conen
- Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Michael Kuhne
- Cardiology Division, Department of Medicine, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Stefan Osswald
- Cardiology Division, Department of Medicine, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Matthias Schwenkglenks
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
- Health Economics Facility, Department of Public Health, University of Basel, Basel, Switzerland
| | - Miquel Serra-Burriel
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
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Serra-Burriel M, Aebersold H, Foster-Witassek F, Coslovsky M, Rodondi N, Blum MR, Sticherling C, Moschovitis G, Beer JH, Reichlin T, Krisai P, Aeschbacher S, Paladini RE, Kühne M, Osswald S, Conen D, Felder S, Schwenkglenks M. Real-World Cost-Effectiveness of Pulmonary Vein Isolation for Atrial Fibrillation: A Target Trial Approach. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2023; 26:1721-1729. [PMID: 37741443 DOI: 10.1016/j.jval.2023.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/27/2023] [Accepted: 08/05/2023] [Indexed: 09/25/2023]
Abstract
OBJECTIVES Randomized controlled trials of pulmonary vein isolation (PVI) for treating atrial fibrillation (AF) have proven the procedure's efficacy. Studies assessing its empirical cost-effectiveness outside randomized trial settings are lacking. We aimed to evaluate the effectiveness and cost-effectiveness of PVI versus medical therapy for AF. METHODS We followed a target trial approach using the Swiss-AF cohort, a prospective observational cohort study that enrolled patients with AF between 2014 and 2017. Resource utilization and cost information were collected through claims data. Quality of life was measured with EQ-5D-3L utilities. We estimated incremental cost-effectiveness ratios (ICERs) from the perspective of the Swiss statutory health insurance system. RESULTS Patients undergoing PVI compared with medical therapy had a 5-year overall survival advantage with a hazard ratio of 0.75 (95% CI 0.46-1.21; P = .69) and a 19.8% SD improvement in quality of life (95% CI 15.5-22.9; P < .001), at an incremental cost of 29 604 Swiss francs (CHF) (95% CI 16 354-42 855; P < .001). The estimated ICER was CHF 158 612 per quality-adjusted life-year (QALY) gained within a 5-year time horizon. Assuming similar health effects and costs over 5 additional years changed the ICER to CHF 82 195 per QALY gained. Results were robust to the sensitivity analyses performed. CONCLUSIONS Our results show that PVI might be a cost-effective intervention within the Swiss healthcare context in a 10-year time horizon, but unlikely to be so at 5 years, if a willingness-to-pay threshold of CHF 100 000 per QALY gained is assumed. Given data availability, we find target trial designs are a valuable tool for assessing the cost-effectiveness of healthcare interventions outside of randomized controlled trial settings.
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Affiliation(s)
- Miquel Serra-Burriel
- Epidemiology, Biostatistics, and Prevention Institute, University of Zurich, Zurich, Switzerland.
| | - Helena Aebersold
- Epidemiology, Biostatistics, and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Fabienne Foster-Witassek
- Epidemiology, Biostatistics, and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Michael Coslovsky
- Department of Clinical Research, University of Basel, University Hospital, Basel, Switzerland; Cardiovascular Research Institute Basel, University of Basel, University Hospital, Basel, Switzerland
| | - Nicolas Rodondi
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
| | - Manuel R Blum
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
| | - Christian Sticherling
- Cardiovascular Research Institute Basel, University of Basel, University Hospital, Basel, Switzerland; Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland; Department of Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Giorgio Moschovitis
- Division of Cardiology, Ente Ospedaliero Cantonale, Regional Hospital of Lugano, Lugano, Switzerland
| | - Jürg H Beer
- Department of Medicine, Cantonal Hospital of Baden and Molecular Cardiology, University Hospital of Zürich, Zurich, Switzerland
| | - Tobias Reichlin
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Philipp Krisai
- Cardiovascular Research Institute Basel, University of Basel, University Hospital, Basel, Switzerland; Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland; Department of Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Stefanie Aeschbacher
- Cardiovascular Research Institute Basel, University of Basel, University Hospital, Basel, Switzerland; Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland; Department of Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Rebecca E Paladini
- Cardiovascular Research Institute Basel, University of Basel, University Hospital, Basel, Switzerland; Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland; Department of Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Michael Kühne
- Cardiovascular Research Institute Basel, University of Basel, University Hospital, Basel, Switzerland; Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland; Department of Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Stefan Osswald
- Cardiovascular Research Institute Basel, University of Basel, University Hospital, Basel, Switzerland; Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland; Department of Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - David Conen
- Population Health Research Institute, McMaster University, Hamilton, Canada
| | - Stefan Felder
- Department of Business and Economics, University of Basel, Basel, Switzerland
| | - Matthias Schwenkglenks
- Epidemiology, Biostatistics, and Prevention Institute, University of Zurich, Zurich, Switzerland; Health Economics Facility, Department of Public Health, University of Basel, Basel, Switzerland
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3
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Foster‐Witassek F, Aebersold H, Aeschbacher S, Ammann P, Beer JH, Blozik E, Bonati LH, Cattaneo M, Coslovsky M, Felder S, Moschovitis G, Müller A, Netzer S, Paladini RE, Reichlin T, Rodondi N, Stauber A, Sticherling C, Szucs T, Conen D, Kühne M, Osswald S, Serra‐Burriel M, Schwenkglenks M. Longitudinal Changes in Health-Related Quality of Life in Patients With Atrial Fibrillation. J Am Heart Assoc 2023; 12:e031872. [PMID: 37929709 PMCID: PMC10727423 DOI: 10.1161/jaha.123.031872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 10/02/2023] [Indexed: 11/07/2023]
Abstract
Background Optimizing health-related quality of life (HRQoL) is an important aim of atrial fibrillation (AF) treatment. Little is known about patients' long-term HRQoL trajectories and the impact of patient and disease characteristics. The aim of this study was to describe HRQoL trajectories in an observational AF study population and in clusters of patients with similar patient and disease characteristics. Methods and Results We used 5-year follow-up data from the Swiss-Atrial Fibrillation prospective cohort, which enrolled 2415 patients with prevalent AF from 2014 to 2017. HRQoL data, collected yearly, comprised EuroQoL-5 dimension utilities and EuroQoL visual analog scale scores. Patient clusters with similar characteristics at enrollment were identified using hierarchical clustering. HRQoL trajectories were analyzed descriptively and with inverse probability-weighted regressions. Effects of postbaseline clinical events were additionally assessed using time-shifted event variables. Among 2412 (99.9%) patients with available baseline HRQoL, 3 clusters of patients with AF were identified, which we characterized as follows: "cardiovascular dominated," "isolated symptomatic," and "severely morbid without cardiovascular disease." Utilities and EuroQoL visual analog scale scores remained stable over time for the full population and the clusters; isolated symptomatic patients showed higher levels of HRQoL. Utilities were reduced after occurrences of stroke, hospitalization for heart failure, and bleeding, by -0.12 (95% CI, -0.18 to -0.06), -0.10 (95% CI, -0.13 to -0.08), and -0.06 (95% CI, -0.08 to -0.04), respectively, on a 0 to 1 utility scale. Utility of surviving patients returned to preevent levels 4 years after heart failure hospitalization; 3 years after bleeding; and 1 year after stroke. Conclusions In patients with prevalent AF, HRQoL was stable over time, irrespective of baseline patient characteristics. Clinical events of hospitalization for heart failure, stroke, and bleeding had only a temporary effect on HRQoL.
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Affiliation(s)
| | - Helena Aebersold
- Epidemiology, Biostatistics and Prevention InstituteUniversity of ZurichZurichSwitzerland
| | - Stefanie Aeschbacher
- Cardiology Division, Department of MedicineUniversity Hospital BaselBaselSwitzerland
- Cardiovascular Research Institute BaselUniversity Hospital BaselBaselSwitzerland
| | - Peter Ammann
- Department of CardiologyCantonal Hospital of St. GallenSt. GallenSwitzerland
| | - Jürg H. Beer
- Department of MedicineCantonal Hospital of BadenBadenSwitzerland
- Center for Molecular CardiologyUniversity of ZurichZurichSwitzerland
| | - Eva Blozik
- Institute of Primary CareUniversity of ZurichZurichSwitzerland
| | - Leo H. Bonati
- Department of NeurologyUniversity Hospital BaselBaselSwitzerland
- Research DepartmentReha RheinfeldenRheinfeldenSwitzerland
| | - Mattia Cattaneo
- Division of Cardiology, Ente Ospedaliero Cantonale, Istituto Cardiocentro TicinoOspedale Regionale di LuganoLuganoSwitzerland
| | - Michael Coslovsky
- Cardiovascular Research Institute BaselUniversity Hospital BaselBaselSwitzerland
- Department of Clinical ResearchUniversity of Basel, University Hospital BaselBaselSwitzerland
| | - Stefan Felder
- Faculty of Business and EconomicsUniversity of BaselBaselSwitzerland
| | - Giorgio Moschovitis
- Division of Cardiology, Ente Ospedaliero Cantonale, Istituto Cardiocentro TicinoOspedale Regionale di LuganoLuganoSwitzerland
| | - Andreas Müller
- Department of CardiologyTriemli Hospital ZurichZurichSwitzerland
| | - Seraina Netzer
- Institute of Primary Health CareUniversity of BernBernSwitzerland
- Department of General Internal Medicine, InselspitalBern University Hospital, University of BernBernSwitzerland
| | - Rebecca E. Paladini
- Cardiology Division, Department of MedicineUniversity Hospital BaselBaselSwitzerland
- Cardiovascular Research Institute BaselUniversity Hospital BaselBaselSwitzerland
| | - Tobias Reichlin
- Department of Cardiology, InselspitalBern University Hospital, University of BernBernSwitzerland
| | - Nicolas Rodondi
- Institute of Primary Health CareUniversity of BernBernSwitzerland
- Department of General Internal Medicine, InselspitalBern University Hospital, University of BernBernSwitzerland
| | - Annina Stauber
- Department of CardiologyTriemli Hospital ZurichZurichSwitzerland
| | - Christian Sticherling
- Cardiology Division, Department of MedicineUniversity Hospital BaselBaselSwitzerland
- Cardiovascular Research Institute BaselUniversity Hospital BaselBaselSwitzerland
| | - Thomas Szucs
- Institute of Pharmaceutical MedicineUniversity of BaselBaselSwitzerland
| | - David Conen
- Population Health Research InstituteMcMaster UniversityHamiltonOntarioCanada
| | - Michael Kühne
- Cardiology Division, Department of MedicineUniversity Hospital BaselBaselSwitzerland
- Cardiovascular Research Institute BaselUniversity Hospital BaselBaselSwitzerland
| | - Stefan Osswald
- Cardiology Division, Department of MedicineUniversity Hospital BaselBaselSwitzerland
- Cardiovascular Research Institute BaselUniversity Hospital BaselBaselSwitzerland
| | - Miquel Serra‐Burriel
- Epidemiology, Biostatistics and Prevention InstituteUniversity of ZurichZurichSwitzerland
| | - Matthias Schwenkglenks
- Epidemiology, Biostatistics and Prevention InstituteUniversity of ZurichZurichSwitzerland
- Health Economics Facility, Department of Public HealthUniversity of BaselBaselSwitzerland
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4
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Aebersold H, Foster-Witassek F, Serra-Burriel M, Brüngger B, Aeschbacher S, Beer JH, Blozik E, Blum M, Bonati L, Conen D, Conte G, Felder S, Huber C, Kuehne M, Moschovitis G, Mueller A, Paladini RE, Reichlin T, Rodondi N, Springer A, Stauber A, Sticherling C, Szucs T, Osswald S, Schwenkglenks M. Estimating the cost impact of atrial fibrillation using a prospective cohort study and population-based controls. BMJ Open 2023; 13:e072080. [PMID: 37709325 PMCID: PMC10503354 DOI: 10.1136/bmjopen-2023-072080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 08/30/2023] [Indexed: 09/16/2023] Open
Abstract
AIMS Atrial fibrillation (AF) costs are expected to be substantial, but cost comparisons with the general population are scarce. Using data from the prospective Swiss-AF cohort study and population-based controls, we estimated the impact of AF on direct healthcare costs from the Swiss statutory health insurance perspective. METHODS Swiss-AF patients, enrolled from 2014 to 2017, had documented, prevalent AF. We analysed 5 years of follow-up, where clinical data, and health insurance claims in 42% of the patients were collected on a yearly basis. Controls from a health insurance claims database were matched for demographics and region. The cost impact of AF was estimated using five different methods: (1) ordinary least square regression (OLS), (2) OLS-based two-part modelling, (3) generalised linear model-based two-part modelling, (4) 1:1 nearest neighbour propensity score matching and (5) a cost adjudication algorithm using Swiss-AF data non-comparatively and considering clinical data. Cost of illness at the Swiss national level was modelled using obtained cost estimates, prevalence from the Global Burden of Disease Project, and Swiss population data. RESULTS The 1024 Swiss-AF patients with available claims data were compared with 16 556 controls without known AF. AF patients accrued CHF5600 (EUR5091) of AF-related direct healthcare costs per year, in addition to non-AF-related healthcare costs of CHF11100 (EUR10 091) per year accrued by AF patients and controls. All five methods yielded comparable results. AF-related costs at the national level were estimated to amount to 1% of Swiss healthcare expenditure. CONCLUSIONS We robustly found direct medical costs of AF patients were 50% higher than those of population-based controls. Such information on the incremental cost burden of AF may support healthcare capacity planning.
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Affiliation(s)
- Helena Aebersold
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | | | - Miquel Serra-Burriel
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Beat Brüngger
- Department of Health Sciences, Helsana Group, Zurich, Switzerland
| | - Stefanie Aeschbacher
- Department of Medicine, Cardiology Division, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Jürg-Hans Beer
- Department of Medicine, Baden Cantonal Hospital, Baden, Switzerland
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Eva Blozik
- Institute of Primary Care, University of Zurich, Zurich, Switzerland
| | - Manuel Blum
- Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
- Department of General Internal Medicine, Inselspital, University Hospital Bern, Bern, Switzerland
| | - Leo Bonati
- Department of Neurology, University Hospital Basel, Basel, Switzerland
- Department of Research, Reha Rheinfelden, Rheinfelden, Switzerland
| | - David Conen
- Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Giulio Conte
- Division of Cardiology, Cardiocentro Ticino (CCT), Lugano, Switzerland
| | - Stefan Felder
- Faculty of Business and Economics, University of Basel, Basel, Switzerland
| | - Carola Huber
- Department of Health Sciences, Helsana Group, Zurich, Switzerland
| | - Michael Kuehne
- Department of Medicine, Cardiology Division, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Giorgio Moschovitis
- Division of Cardiology, Ente Ospedaliero Cantonale (EOC), Instituto Cardiocentro Ticino, Ospedale Regionale di Lugano, Lugano, Switzerland
| | - Andreas Mueller
- Department of Cardiology, Triemli Hospital Zurich, Zurich, Switzerland
| | - Rebecca E Paladini
- Department of Medicine, Cardiology Division, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Tobias Reichlin
- Department of Cardiology, Inselspital, University Hospital Bern, Bern, Switzerland
| | - Nicolas Rodondi
- Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
- Department of General Internal Medicine, Inselspital, University Hospital Bern, Bern, Switzerland
| | - Anne Springer
- Department of Medicine, Cardiology Division, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Annina Stauber
- Department of Cardiology, Triemli Hospital Zurich, Zurich, Switzerland
| | - Christian Sticherling
- Department of Medicine, Cardiology Division, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Thomas Szucs
- Institute of Pharmaceutical Medicine (ECPM), University of Basel, Basel, Switzerland
| | - Stefan Osswald
- Department of Medicine, Cardiology Division, University Hospital Basel, Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland
| | - Matthias Schwenkglenks
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
- Institute of Pharmaceutical Medicine (ECPM), University of Basel, Basel, Switzerland
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