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  • 1.
    Aronsson, Mattias
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Health Economic Evaluations of Screening Programs - Applications and Method Improvements2017Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    Screening to detect diseases early is attractive as it can improve the prognosis and decrease costs, but it is often a problematic concept and there are several pitfalls. Many healthy individuals have to be investigated to avoid a disease in a few, which results in a dilemma because to save a few, many are exposed to a procedure that could potentially harm them. Other examples of problems associated with screening are latent diseases and over-treating. The question of optimal design of a screening program is another source of uncertainty for decision-makers, as a screening program may potentially be implemented in very different ways. This highlights the need for structured analyses that weigh benefits against the harms and costs that occur as consequences of the screening.

    The aim of this thesis is, therefore, to explore, develop and implement methods for health economic evaluations of screening programs. This is done to identify problems and suggest solutions to improve future evaluations and in extension policy making.

    This aim was analysed using decision analytic cost-effectiveness analyses constructed as Markov models. These are well-suited for this task given the sequential management approach where all relevant data are unlikely to come from a single source of evidence. The input data were in this thesis obtained from the published literature and were complemented with data from Swedish registries and the included case studies. The case studies were two different types of screening programs; a program of screening for unknown atrial fibrillation and a program to detect colorectal cancer early. Further, the implementation of treatment with thrombectomy and novel oral anticoagulants were used to illustrate how factors outside the screening program itself have an impact on the evaluations.

    As shown by the result of the performed analyses, the major contribution of this thesis was that it provided a simple and systematic approach for the economic evaluation of multiple screening designs to identify an optimal design.

    In both the included case studies, the screening was considered costeffective in detecting the disease; unknown atrial fibrillation and colorectal cancer, respectively. Further, the optimal way to implement these screening programs is dependent on the threshold value for cost-effectiveness in the health care sector and the characteristics of the investigated cohort. This is because it is possible to gain increasingly more health benefits by changing the design of the screening program, but that the change in design also results in higher marginal costs. Additionally, changes in the screening setting were shown to be important as they affect the cost-effectiveness of the screening. This implies that flexible modelling with continuously updated models are necessary for an optimal resource allocation.

    Delarbeten
    1. Cost-effectiveness of high-sensitivity faecal immunochemical test and colonoscopy screening for colorectal cancer
    Öppna denna publikation i ny flik eller fönster >>Cost-effectiveness of high-sensitivity faecal immunochemical test and colonoscopy screening for colorectal cancer
    Visa övriga...
    2017 (Engelska)Ingår i: British Journal of Surgery, ISSN 0007-1323, E-ISSN 1365-2168, Vol. 104, nr 8, s. 1078-1086Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    Background: Colorectal cancer screening can decrease morbidity and mortality. However, there are widespread differences in the implementation of programmes and choice of strategy. The primary objective of this study was to estimate lifelong costs and health outcomes of two of the currently most preferred methods of screening for colorectal cancer: colonoscopy and sensitive faecal immunochemical test (FIT). Methods: A cost-effectiveness analysis of colorectal cancer screening in a Swedish population was performed using a decision analysis model, based on the design of the Screening of Swedish Colons (SCREESCO) study, and data from the published literature and registries. Lifelong cost and effects of colonoscopy once, colonoscopy every 10 years, FIT twice, FIT biennially and no screening were estimated using simulations. Results: For 1000 individuals invited to screening, it was estimated that screening once with colonoscopy yielded 49 more quality-adjusted life-years (QALYs) and a cost saving of (sic)64 800 compared with no screening. Similarly, screening twice with FIT gave 26 more QALYs and a cost saving of (sic)17 600. When the colonoscopic screening was repeated every tenth year, 7 additional QALYs were gained at a cost of (sic)189 400 compared with a single colonoscopy. The additional gain with biennial FIT screening was 25 QALYs at a cost of (sic)154 300 compared with two FITs. Conclusion: All screening strategies were cost-effective compared with no screening. Repeated and single screening strategies with colonoscopy were more cost-effective than FIT when lifelong effects and costs were considered. However, other factors such as patient acceptability of the test and availability of human resources also have to be taken into account.

    Ort, förlag, år, upplaga, sidor
    WILEY, 2017
    Nationell ämneskategori
    Hälso- och sjukvårdsorganisation, hälsopolitik och hälsoekonomi
    Identifikatorer
    urn:nbn:se:liu:diva-139394 (URN)10.1002/bjs.10536 (DOI)000403158800015 ()28561259 (PubMedID)
    Anmärkning

    Funding Agencies|SCREESCO; Regionala Cancer-centrum i samverkan; Swedish Cancer Foundation; Karolinska Institute

    Tillgänglig från: 2017-08-24 Skapad: 2017-08-24 Senast uppdaterad: 2018-04-16
    2. Cost-effectiveness of mass screening for untreated atrial fibrillation using intermittent ECG recording
    Öppna denna publikation i ny flik eller fönster >>Cost-effectiveness of mass screening for untreated atrial fibrillation using intermittent ECG recording
    Visa övriga...
    2015 (Engelska)Ingår i: Europace, ISSN 1099-5129, E-ISSN 1532-2092, Vol. 17, nr 7, s. 1023-1029Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    Aims The aim of this study was to estimate the cost-effectiveness of 2 weeks of intermittent screening for asymptomatic atrial fibrillation (AF) in 75/76-year-old individuals. Methods and results The cost-effectiveness analysis of screening in 75-year-old individuals was based on a lifelong decision analytic Markov model. In this model, 1000 hypothetical individuals, who matched the population of the STROKESTOP study, were simulated. The population was analysed for different parameters such as prevalence, AF status, treatment with oral anticoagulation, stroke risk, utility, and costs. In the base-case scenario, screening of 1000 individuals resulted in 263 fewer patient-years with undetected AF. This implies eight fewer strokes, 11 more life-years, and 12 more quality-adjusted life years (QALYs) per 1000 screened individuals. The screening implies an incremental cost of (sic)50 012, resulting in a cost of (sic)4313 per gained QALY and (sic)6583 per avoided stroke. Conclusions With the use of a decision analytic simulation model, it has been shown that screening for asymptomatic AF in 75/76-year-old individuals is cost-effective.

    Ort, förlag, år, upplaga, sidor
    Oxford University Press (OUP): Policy B - Oxford Open Option B - CC-BY, 2015
    Nyckelord
    Atrial fibrillation; Screening; Hand-held ECG; Quality-adjusted life year ( QALY); Cost-effectiveness
    Nationell ämneskategori
    Klinisk medicin
    Identifikatorer
    urn:nbn:se:liu:diva-120879 (URN)10.1093/europace/euv083 (DOI)000359153000006 ()25868469 (PubMedID)
    Anmärkning

    Funding Agencies|Swedish Heart and Lung Foundation; Board of Benevolence of the Swedish Order of Freemasons; Tornspiran

    Tillgänglig från: 2015-08-28 Skapad: 2015-08-28 Senast uppdaterad: 2017-12-04
    3. Cost-effectiveness of endovascular thrombectomy in patients with acute ischemic stroke
    Öppna denna publikation i ny flik eller fönster >>Cost-effectiveness of endovascular thrombectomy in patients with acute ischemic stroke
    Visa övriga...
    2016 (Engelska)Ingår i: Neurology, ISSN 0028-3878, E-ISSN 1526-632X, Vol. 86, nr 11, s. 1053-1059Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    OBJECTIVE: To evaluate the cost-effectiveness of adding endovascular thrombectomy to standard care in patients with acute ischemic stroke.

    METHODS: The cost-effectiveness analysis of endovascular thrombectomy in patients with acute ischemic stroke was based on a decision-analytic Markov model. Primary outcomes from ESCAPE, Extending the Time for Thrombolysis in Emergency Neurological Deficits-Intra-Arterial (EXTEND-IA), Multicenter Randomized Clinical Trial of Endovascular Treatment for Acute Ischemic Stroke in the Netherlands (MR CLEAN), Endovascular Revascularization With Solitaire Device Versus Best Medical Therapy in Anterior Circulation Stroke Within 8 Hours (REVASCAT), and Solitaire with the Intention for Thrombectomy as Primary Endovascular Treatment for Acute Ischemic Stroke (SWIFT PRIME) along with data from published studies and registries were used in this analysis. We used a health care payer perspective and a lifelong time horizon to estimate costs and effects.

    RESULTS: The model showed that adding thrombectomy with stent retrievers to guideline-based care (including IV thrombolysis) resulted in a gain of 0.40 life-years and 0.99 quality-adjusted life-years along with a cost savings of approximately $221 per patient. The sensitivity analysis showed that the results were not sensitive to changes in uncertain parameters or assumptions.

    CONCLUSIONS: Adding endovascular treatment to standard care resulted in substantial clinical benefits at low costs. The results were consistent throughout irrespective of whether data from ESCAPE, EXTEND-IA, MR CLEAN, REVASCAT, or SWIFT PRIME were used in this model.

    Ort, förlag, år, upplaga, sidor
    Lippincott Williams & Wilkins, 2016
    Nationell ämneskategori
    Hälso- och sjukvårdsorganisation, hälsopolitik och hälsoekonomi
    Identifikatorer
    urn:nbn:se:liu:diva-126429 (URN)10.1212/WNL.0000000000002439 (DOI)000371887200012 ()26873954 (PubMedID)
    Anmärkning

    Funding agencies: Dental and Pharmaceutical Benefits Agency

    Tillgänglig från: 2016-03-24 Skapad: 2016-03-24 Senast uppdaterad: 2017-11-30
    4. Designing an optimal screening program for unknown atrial fibrillation: a cost-effectiveness analysis.
    Öppna denna publikation i ny flik eller fönster >>Designing an optimal screening program for unknown atrial fibrillation: a cost-effectiveness analysis.
    Visa övriga...
    2017 (Engelska)Ingår i: Europace, ISSN 1099-5129, E-ISSN 1532-2092, Vol. 19, nr 10, s. 1650-1656Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    Aims: The primary objective of this study was to use computer simulations to suggest an optimal age for initiation of screening for unknown atrial fibrillation and to evaluate if repeated screening will add value.

    Methods and results: In the absence of relevant clinical studies, this analysis was based on a simulation model. More than two billion different designs of screening programs for unknown atrial fibrillation were simulated and analysed. Data from the published scientific literature and registries were used to construct the model and estimate lifelong effects and costs. Costs and effects generated by 2 147 483 648 different screening designs were calculated and compared. Program designs that implied worse clinical outcome and were less cost-effective compared to other programs were excluded from the analysis. Seven program designs were identified, and considered to be cost effective depending on what the health-care decision makers are ready to pay for gaining a quality-adjusted life-year (QALY). Screening at the age of 75 implied the lowest cost per gained QALY (€4 800/QALY).

    Conclusion: In conclusion, examining the results of more than two billion simulated screening program designs for unknown atrial fibrillation, seven designs were deemed cost-effective depending on how much we are prepared to pay for gaining QALYs. Our results showed that repeated screening for atrial fibrillation implied additional health benefits to a reasonable cost compared to one-off screening.

    Ort, förlag, år, upplaga, sidor
    Oxford: Oxford University Press, 2017
    Nyckelord
    Atrial fibrillation, Cost-utility analysis, Optimization analysis, Screening
    Nationell ämneskategori
    Hälso- och sjukvårdsorganisation, hälsopolitik och hälsoekonomi
    Identifikatorer
    urn:nbn:se:liu:diva-141557 (URN)10.1093/europace/eux002 (DOI)000412840300006 ()28340009 (PubMedID)
    Anmärkning

    Funding agencies: Dental and Pharmaceutical Benefits Agency

    Tillgänglig från: 2017-09-29 Skapad: 2017-09-29 Senast uppdaterad: 2017-10-31
  • 2.
    Aronsson, Mattias
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Hälsouniversitetet.
    Carlsson, Per
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Hälsouniversitetet.
    Levin, Lars-Åke
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Hälsouniversitetet.
    Hälsoekonomisk förstudie av digital patologi: Var finns de potentiella vinsterna?2015Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    Bakgrund

    Det pågår en utveckling inom patologiska laboratorier mot en ökad digital lagring och analyser av bilder från vävnadsprover via datorskärm istället för mikroskop. En digital lagring av informationen har en rad potentiella fördelar. Informationen kan läsas av flera personer samtidigt, även på distans, vilket underlättar utnyttjande av expertkunskap och ger möjligheter till ökat kapacitetsutnyttjande. Än så länge finns det endast begränsade tillämpningar i klinisk rutinanvändning. Sverige ligger dock i framkant när det gäller systemutveckling.

    På grund av att digitaliseringen förväntas leda till ökade kostnader i kombination med osäkerhet kring effekterna gör att hälsoekonomiska analyser är efterfrågade. Avsaknad av data kring effekterna av digitalisering har hittills inte tillåtit någon adekvat värdering av hälsoekonomiska aspekter. Trots bristen på effektdata är det hög tid att börja fundera på vad man vill ta reda på, hur det ska gå till, hur förutsättningarna ser ut för att kunna fylla de kunskapsluckor som behöver fyllas.

    Syfte

    Syftet med denna förstudie är att undersöka hur en hälsoekonomisk utvärdering av digital patologi skulle kunna läggas upp, förutsättningarna att göra en sådan utvärdering utifrån tillgängliga data och identifiera behov av kompletterande forskning.

    Metod

    Digitalisering av ett patologilaboratorium omfattar och påverkar stora delar av verksamheten på ett komplext sätt. Därför bör den totala ekonomiska effekten av tidsvinster, som kan bidra till lägre kostnader, liksom tillkommande kostnader på grund av nya arbetsmoment, lagring och ny utrustning studeras. I förstudien har vi undersökt möjligheterna att relatera totalkostnaderna och kostnaderna uppdelade på olika kostnadsslag till standardprodukter vid laboratoriet, i detta fall producerade remissvar respektive glas.

    Den största patientnyttan av en digitalisering förväntas uppstå tack vare kortare svarstider och ökad diagnostisk säkerhet. För att kunna besvara frågan om storleken på patientnyttan behöver specifika tillämpningar (cancertyper) identifieras där digital patologi förmodas göra skillnad jämfört med traditionellt använd teknik. För att i ett tidigt skede försöka identifiera kostnader och vinster med digital patologi användes tre  analysmodeller med olika perspektiv. De tre modellerna är Arbetsflöde och volymer, Nytta ur ett patientperspektiv och Nytta ur ett medicinskt perspektiv. Med hjälp av de tre analysmodellerna har kortsiktiga och långsiktiga potentiella effekter av ett fullskaligt införande analyserats.

    Resultat

    Viktiga uppgifter saknas både om förhållandena idag men framförallt vet vi mycket lite om effekterna av digitalisering. Detta innebär att det i nuläget inte är möjligt att göra exakta beräkningar eller dra välinformerade slutsatser rörande vilka hälsoekonomiska effekter en digitalisering innebär samt säkert bestämma alla typer av data som är relevanta att studera. Med hjälp av modellerna går det redan nu att dra vissa slutsatser. Vi har spekulerat om den potentiella nyttan med en fullskalig digitalisering i två av de tre modellerna. Modell 1 kan användas som utgångspunkt för att analysera en förbättrad arbetsprocess inom patologavdelningen, framförallt är det intressant att försöka mäta processtiden per glas för patologen. Modell 2 kan användas för att studera hur en minskning av väntetiderna för PAD-besked påverkar patienten i form av minskad oro och ångest. Utifrån Modell 3 drar vi slutsatsen att det är osannolikt att eventuellt förkortade väntetider till följd av en digitalisering innebär mätbar medicinsk nytta. Det är dock viktigt att påpeka att vi endast studerat ett exempel där en medicinsk nytta skulle kunna förväntas.

    Studier från USA där försök att skatta kostnadsförändringar pekar mot att huvuddelen av förväntade besparingar görs genom förbättrad produktivitet, men att hela 30 procent av besparingarna förväntas uppstå genom minskad onödig vård som uppstår på grund av felaktiga svar.

    Slutsatser

    • Vetenskapliga utvärderingar av effekter och kostnader av en digitalisering avpatologiska laboratorier, som avser svenska förhållanden, saknas.
    • I dagsläget är det inte möjligt att göra exakta beräkningar eller dra slutsatserrörande hälsoekonomiska effekter av en digitalisering för att basala effektdataoch tillförlitliga kostnadsdata saknas.
    • Med hjälp av tre framtagna modeller går det att dra vissa slutsatser om vilkatyper av data som är relevanta att studera. Modell 1 kan användas för attanalysera en förbättrad arbetsprocess inom patologavdelningen framföralltom det går att visa att tiden per glas för patologen kan minskas. Modell 2 kananvändas för att studera hur en minskning av väntetiderna för PAD-besked påverkar patienten i form av minskad oro och ångest. Modell 3 kan användassom utgångspunkt för att identifiera och analysera situationer i vården där enkortare svarstid kan påverka kliniska beslut.
    • Hur stor patienters livskvalitetsförlust är under väntan på provsvar är ettexempel på data som skulle behöva tas fram i avvaktan på effektdata fråndigitalisering av arbetsprocesserna inom patologin. Likaså behöver redovisningenav kostnader förbättras. Ett tredje område gäller kartläggning aveventuell onödig eller utebliven vård på grund av felaktiga provsvar.
    • Digitaliseringen av patologin behöver studeras hälsoekonomiskt. Om sådanastudier ska bli valida förutsätter det att verksamhetsföreträdare i patologiefterfrågar sådan kunskap, är med och formulerar frågeställningar ochmedverkar i analysarbetet.
  • 3.
    Aronsson, Mattias
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Husberg, Magnus
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Kalkan, Almina
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Eckard, Nathalie
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Alwin, Jenny
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Differences between hypothetical and experience-based value sets for EQ-5D used in Sweden: Implications for decision makers2015Ingår i: Scandinavian Journal of Public Health, ISSN 1403-4948, E-ISSN 1651-1905, Vol. 43, nr 8, s. 848-854Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Aims: A number of value sets are available today for converting EQ-5D questionnaire responses to quality-adjusted life year-weights used in health economic evaluations. The aim of this study is to analyse the differences between the commonly used hypothetical UK value set and the newly introduced Swedish experience-based value set and to evaluate health economic implications of such differences on policy decisions. Methods: Differences between the two value sets were studied using two methods: a comparison of health states and improvements as well as an empirical comparison. In the comparison of health states and improvements, the valuations of all EQ-5D states and all pure improvements were compared. In the empirical study, a database of 23,925 individuals was used to identify patient groups that could be affected by the implementation of the Swedish experience-based value set. Results: The comparison of health states and possible improvements showed that only three health states were assigned a lower quality-adjusted life year-weight and most improvements were given smaller absolute values if the experience-based value set was used. The empirical comparison showed that severe conditions were assigned higher values when using the experience-based value set. Conclusions: The Swedish experience-based value set seems to render a higher estimated level of health-related quality of life in virtually all health conditions compared to the hypothetical UK value set. In extension, health-related quality of life enhancing interventions are likely to be given higher priority in decision-making situations where hypothetical values are used to construct quality-adjusted life year-weights. In situations where experience-based quality-adjusted life year-weights are used, life-prolonging interventions would be prioritised.

  • 4.
    Aronsson, Mattias
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Persson, Josefine
    Sahlgrenska Academy, University of Gothenburg.
    Blomstrand, Christian
    Sahlgrenska Academy, University of Gothenburg.
    Wester, Per
    University of Umeå, Sweden; Danderyd Hospital Karolinska Institutet, Sweden, Sweden.
    Levin, Lars-Åke
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Cost-effectiveness of endovascular thrombectomy in patients with acute ischemic stroke2016Ingår i: Neurology, ISSN 0028-3878, E-ISSN 1526-632X, Vol. 86, nr 11, s. 1053-1059Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    OBJECTIVE: To evaluate the cost-effectiveness of adding endovascular thrombectomy to standard care in patients with acute ischemic stroke.

    METHODS: The cost-effectiveness analysis of endovascular thrombectomy in patients with acute ischemic stroke was based on a decision-analytic Markov model. Primary outcomes from ESCAPE, Extending the Time for Thrombolysis in Emergency Neurological Deficits-Intra-Arterial (EXTEND-IA), Multicenter Randomized Clinical Trial of Endovascular Treatment for Acute Ischemic Stroke in the Netherlands (MR CLEAN), Endovascular Revascularization With Solitaire Device Versus Best Medical Therapy in Anterior Circulation Stroke Within 8 Hours (REVASCAT), and Solitaire with the Intention for Thrombectomy as Primary Endovascular Treatment for Acute Ischemic Stroke (SWIFT PRIME) along with data from published studies and registries were used in this analysis. We used a health care payer perspective and a lifelong time horizon to estimate costs and effects.

    RESULTS: The model showed that adding thrombectomy with stent retrievers to guideline-based care (including IV thrombolysis) resulted in a gain of 0.40 life-years and 0.99 quality-adjusted life-years along with a cost savings of approximately $221 per patient. The sensitivity analysis showed that the results were not sensitive to changes in uncertain parameters or assumptions.

    CONCLUSIONS: Adding endovascular treatment to standard care resulted in substantial clinical benefits at low costs. The results were consistent throughout irrespective of whether data from ESCAPE, EXTEND-IA, MR CLEAN, REVASCAT, or SWIFT PRIME were used in this model.

  • 5.
    Aronsson, Mattias
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Svennberg, Emma
    Danderyd Hospital, Sweden.
    Rosenqvist, Marten
    Danderyd Hospital, Sweden.
    Engdahl, Johan
    Halland Hospital, Sweden.
    Al-Khalili, Faris
    Danderyd Hospital, Sweden; Stockholm Heart Centre, Sweden.
    Friberg, Leif
    Danderyd Hospital, Sweden.
    Frykman-Kull, Viveka
    Danderyd Hospital, Sweden.
    Levin, Lars-Åke
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Cost-effectiveness of mass screening for untreated atrial fibrillation using intermittent ECG recording2015Ingår i: Europace, ISSN 1099-5129, E-ISSN 1532-2092, Vol. 17, nr 7, s. 1023-1029Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Aims The aim of this study was to estimate the cost-effectiveness of 2 weeks of intermittent screening for asymptomatic atrial fibrillation (AF) in 75/76-year-old individuals. Methods and results The cost-effectiveness analysis of screening in 75-year-old individuals was based on a lifelong decision analytic Markov model. In this model, 1000 hypothetical individuals, who matched the population of the STROKESTOP study, were simulated. The population was analysed for different parameters such as prevalence, AF status, treatment with oral anticoagulation, stroke risk, utility, and costs. In the base-case scenario, screening of 1000 individuals resulted in 263 fewer patient-years with undetected AF. This implies eight fewer strokes, 11 more life-years, and 12 more quality-adjusted life years (QALYs) per 1000 screened individuals. The screening implies an incremental cost of (sic)50 012, resulting in a cost of (sic)4313 per gained QALY and (sic)6583 per avoided stroke. Conclusions With the use of a decision analytic simulation model, it has been shown that screening for asymptomatic AF in 75/76-year-old individuals is cost-effective.

  • 6.
    Aronsson, Mattias
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Svennberg, Emma
    Karolinska Institutet, Department of Clinical Science, Cardiology Unit, Danderyd University Hospital, Stockholm, Sweden..
    Rosenqvist, Mårten
    Karolinska Institutet, Department of Clinical Science, Cardiology Unit, Danderyd University Hospital, Stockholm, Sweden..
    Engdahl, Johan
    Karolinska Institutet, Department of Clinical Science, Cardiology Unit, Danderyd University Hospital, Stockholm, Sweden..
    Al-Khalili, Faris
    Karolinska Institutet, Department of Clinical Science, Cardiology Unit, Danderyd University Hospital, Stockholm, Sweden..
    Friberg, Leif
    Karolinska Institutet, Department of Clinical Science, Cardiology Unit, Danderyd University Hospital, Stockholm, Sweden..
    Frykman, Viveka
    Karolinska Institutet, Department of Clinical Science, Cardiology Unit, Danderyd University Hospital, Stockholm, Sweden..
    Levin, Lars-Åke
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Designing an optimal screening program for unknown atrial fibrillation: a cost-effectiveness analysis.2017Ingår i: Europace, ISSN 1099-5129, E-ISSN 1532-2092, Vol. 19, nr 10, s. 1650-1656Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Aims: The primary objective of this study was to use computer simulations to suggest an optimal age for initiation of screening for unknown atrial fibrillation and to evaluate if repeated screening will add value.

    Methods and results: In the absence of relevant clinical studies, this analysis was based on a simulation model. More than two billion different designs of screening programs for unknown atrial fibrillation were simulated and analysed. Data from the published scientific literature and registries were used to construct the model and estimate lifelong effects and costs. Costs and effects generated by 2 147 483 648 different screening designs were calculated and compared. Program designs that implied worse clinical outcome and were less cost-effective compared to other programs were excluded from the analysis. Seven program designs were identified, and considered to be cost effective depending on what the health-care decision makers are ready to pay for gaining a quality-adjusted life-year (QALY). Screening at the age of 75 implied the lowest cost per gained QALY (€4 800/QALY).

    Conclusion: In conclusion, examining the results of more than two billion simulated screening program designs for unknown atrial fibrillation, seven designs were deemed cost-effective depending on how much we are prepared to pay for gaining QALYs. Our results showed that repeated screening for atrial fibrillation implied additional health benefits to a reasonable cost compared to one-off screening.

  • 7.
    Aronsson, Mattias
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    Walfridsson, Håkan
    Östergötlands Läns Landsting, Hjärt- och Medicincentrum, Kardiologiska kliniken US. Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för kardiovaskulär medicin. Linköpings universitet, Medicinska fakulteten.
    Janzon, Magnus
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för kardiovaskulär medicin. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Hjärt- och Medicincentrum, Kardiologiska kliniken US.
    Walfridsson, Ulla
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för omvårdnad. Region Östergötland, Hjärt- och Medicincentrum, Kardiologiska kliniken US. Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för kardiovaskulär medicin. Linköpings universitet, Medicinska fakulteten.
    Nielsen, Jens Cosedis
    Aarhus University Hospital, Denmark.
    Hansen, Peter Steen
    Aarhus University Hospital, Denmark.
    Johannessen, Arne
    Gentofte University Hospital, Denmark.
    Raatikainen, Pekka
    Tampere University Hospital, Finland.
    Hindricks, Gerhard
    Leipzig University Hospital, Germany.
    Kongstad, Ole
    Lund University Hospital, Sweden.
    Pehrson, Steen
    Rigshospitalet, Denmark.
    Englund, Anders
    University Hospital, Örebro, Sweden.
    Hartikainen, Juha
    Kuopio University Hospital, Finland.
    Mortensen, Leif Spange
    Danish Information Technology Centre for Education and Research, Aarhus, Denmark.
    Levin, Lars-Åke
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Medicinska fakulteten.
    The cost-effectiveness of radiofrequency catheter ablation as first-line treatment for paroxysmal atrial fibrillation: results from a MANTRA-PAF substudy.2015Ingår i: Europace, ISSN 1099-5129, E-ISSN 1532-2092, Vol. 17, nr 1, s. 48-55Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    AIM: The aim of this prospective substudy was to estimate the cost-effectiveness of treating paroxysmal atrial fibrillation (AF) with radiofrequency catheter ablation (RFA) compared with antiarrhythmic drugs (AADs) as first-line treatment.

    METHODS AND RESULTS: A decision-analytic Markov model, based on MANTRA-PAF (Medical Antiarrhythmic Treatment or Radiofrequency Ablation in Paroxysmal Atrial Fibrillation) study data, was developed to study long-term effects and costs of RFA compared with AADs as first-line treatment. Positive clinical effects were found in the overall population, a gain of an average 0.06 quality-adjusted life years (QALYs) to an incremental cost of €3033, resulting in an incremental cost-effectiveness ratio of €50 570/QALY. However, the result of the subgroup analyses showed that RFA was less costly and more effective in younger patients. This implied an incremental cost-effectiveness ratio of €3434/QALY in ≤50-year-old patients respectively €108 937/QALY in >50-year-old patients.

    CONCLUSION: Radiofrequency catheter ablation as first-line treatment is a cost-effective strategy for younger patients with paroxysmal AF. However, the cost-effectiveness of using RFA as first-line therapy in older patients is uncertain, and in most of these AADs should be attempted before RFA (MANTRA-PAF ClinicalTrials.gov number; NCT00133211).

  • 8.
    Walfridsson, Håkan
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för kardiovaskulär medicin. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Hjärt- och Medicincentrum, Kardiologiska kliniken US.
    Walfridsson, Ulla
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för omvårdnad. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Hjärt- och Medicincentrum, Kardiologiska kliniken US.
    Cosedis Nielsen, J.
    Aarhus University Hospital, Denmark.
    Johannessen, A.
    Gentofte University Hospital, Denmark.
    Raatikainen, P.
    Tampere University Hospital, Finland.
    Janzon, Magnus
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för kardiovaskulär medicin. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Hjärt- och Medicincentrum, Kardiologiska kliniken US.
    Levin, Lars-Åke
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Hälsouniversitetet.
    Aronsson, Mattias
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för hälso- och sjukvårdsanalys. Linköpings universitet, Hälsouniversitetet.
    Hindricks, G.
    Leipzig University Hospital, Germany.
    Kongstad, O.
    University of Lund Hospital, Sweden.
    Pehrson, S.
    Rigshosp, Denmark.
    Englund, A.
    University Hospital, Örebro, Sweden.
    Hartikainen, J.
    Kuopio University Hospital, Finland.
    Mortensen, L. S.
    12UNI-C, Danish Information Technology Centre for Education and Research, Denmark.
    Hansen, P. S.
    Aarhus University Hospital, Denmark.
    Radiofrequency ablation as initial therapy in paroxysmal atrial fibrillation: results on health-related quality of life and symptom burden. The MANTRA-PAF trial2015Ingår i: Europace, ISSN 1099-5129, E-ISSN 1532-2092, Vol. 17, nr 2, s. 215-221Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Aims The Medical ANtiarrhythmic Treatment or Radiofrequency Ablation in Paroxysmal Atrial Fibrillation (MANTRA-PAF) trial assessed the long-term efficacy of an initial strategy of radiofrequency ablation (RFA) vs. antiarrhythmic drug therapy (AAD) as first-line treatment for patients with PAF. In this substudy, we evaluated the effect of these treatment modalities on the Health-Related Quality of Life (HRQoL) and symptom burden of patients at 12 and 24 months. Methods and results During the study period, 294 patients were enrolled in the MANTRA-PAF trial and randomized to receive AAD (N = 148) or RFA (N = 146). Two generic questionnaires were used to assess the HRQoL [Short Form-36 (SF-36) and EuroQol-five dimensions (EQ-5D)], and the Arrhythmia-Specific questionnaire in Tachycardia and Arrhythmia (ASTA) was used to evaluate the symptoms appearing during the trial. All comparisons were made on an intention-to-treat basis. Both randomization groups showed significant improvements in assessments with both SF-36 and EQ-5D, at 24 months. Patients randomized to RFA showed significantly greater improvement in four physically related scales of the SF-36. The three most frequently reported symptoms were breathlessness during activity, pronounced tiredness, and worry/anxiety. In both groups, there was a significant reduction in ASTA symptom index and in the severity of seven of the eight symptoms over time. Conclusion Both AAD and RFA as first-line treatment resulted in substantial improvement of HRQoL and symptom burden in patients with PAF. Patients randomized to RFA showed greater improvement in physical scales (SF-36) and the EQ-visual analogue scale.

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