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      Stratified cost-utility analysis of total hip arthroplasty in displaced femoral neck fracture Translated title: Análisis de coste-utilidad estratificado de la prótesis total de cadera en la fractura de cuello de fémur desplazada

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          Abstract

          Abstract Objective To conduct a stratified cost-utility analysis of total versus partial hip arthroplasty as a function of clinical subtype. Method All cases of this type of intervention were analysed between 2010 and 2016 in the Basque Health Service, gathering data on clinical outcomes and resource use to calculate the cost and utility in quality-adjusted life years (QALYs) at individual level. The statistical analysis included applying the propensity score to balance the groups, and seemingly unrelated regression models to calculate the incremental cost-utility ratio and plot the cost-effectiveness plane. The interaction between age group and American Society of Anesthesiologists (ASA) risk class was assessed in the multivariate analysis. Results The study identified 5867 patients diagnosed with femoral neck fracture, of whom 1307 and 4560 were treated with total and partial hip arthroplasty, respectively. In the cost-utility analysis based on the seemingly unrelated regression, total hip arthroplasty was found to have a higher cost and higher utility (2465€ and 0.42 QALYs). Considering a willingness-to-pay threshold of €22,000 per QALY, total hip arthroplasty was cost-effective in the under-80-year-old subgroup. Among patients above this age, hemiarthroplasty was cost-effective in ASA class I-II patients and dominant in ASA class III-IV patients. Conclusions Subgroup analysis supports current daily clinical practice in displaced femoral neck fractures, namely, using partial replacement in most patients and reserving total replacement for younger patients.

          Translated abstract

          Resumen Objetivo Realizar un análisis de coste-utilidad de la prótesis total de cadera frente a la prótesis parcial. Método Se analizaron todos los casos intervenidos desde 2010 hasta 2016 en el Servicio Vasco de Salud, recogiendo resultados clínicos y uso de recursos para calcular individualmente el coste y la utilidad en años de vida ajustados por calidad (AVAC). El análisis estadístico incluyó el pareamiento por puntaje de propensión para balancear los grupos y modelos de regresión aparentemente no relacionados para calcular la razón de coste-utilidad incremental y el plano de coste-efectividad. La interacción de grupo de edad y riesgo según la American Society of Anesthesiologists (ASA) se incluyó en el análisis multivariante. Resultados Se identificaron 1307 pacientes con prótesis total y 4560 con prótesis parcial. Al hacer el análisis de coste-utilidad con modelos de regresión aparentemente no relacionados el resultado fue mayor coste y mayor utilidad para la prótesis total (2465 € y 0,42 AVAC). Para un umbral de 22.000 € por AVAC, la prótesis total fue coste-efectiva en el subgrupo de menores de 80 años. En el grupo de mayores de 80 años la parcial fue coste-efectiva en los casos con riesgo ASA I-II y dominante en los ASA III-IV. Conclusiones El análisis de subgrupos ratifica la práctica clínica habitual en las fracturas de cuello de fémur desplazadas de intervenir a la mayoría de los pacientes mediante prótesis parcial y reservar la prótesis total para los pacientes más jóvenes.

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          A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation

          The objective of this study was to develop a prospectively applicable method for classifying comorbid conditions which might alter the risk of mortality for use in longitudinal studies. A weighted index that takes into account the number and the seriousness of comorbid disease was developed in a cohort of 559 medical patients. The 1-yr mortality rates for the different scores were: "0", 12% (181); "1-2", 26% (225); "3-4", 52% (71); and "greater than or equal to 5", 85% (82). The index was tested for its ability to predict risk of death from comorbid disease in the second cohort of 685 patients during a 10-yr follow-up. The percent of patients who died of comorbid disease for the different scores were: "0", 8% (588); "1", 25% (54); "2", 48% (25); "greater than or equal to 3", 59% (18). With each increased level of the comorbidity index, there were stepwise increases in the cumulative mortality attributable to comorbid disease (log rank chi 2 = 165; p less than 0.0001). In this longer follow-up, age was also a predictor of mortality (p less than 0.001). The new index performed similarly to a previous system devised by Kaplan and Feinstein. The method of classifying comorbidity provides a simple, readily applicable and valid method of estimating risk of death from comorbid disease for use in longitudinal studies. Further work in larger populations is still required to refine the approach because the number of patients with any given condition in this study was relatively small.
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            EuroQol - a new facility for the measurement of health-related quality of life

            (1990)
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              An estimate of the worldwide prevalence and disability associated with osteoporotic fractures.

              The aim of this study was to quantify the global burden of osteoporotic fracture worldwide. The incidence of hip fractures was identified by systematic review and the incidence of osteoporotic fractures was imputed from the incidence of hip fractures in different regions of the world. Excess mortality and disability weights used age- and sex-specific data from Sweden to calculate the Disability Adjusted Life Years (DALYs) lost due to osteoporotic fracture. In the year 2000 there were an estimated 9.0 million osteoporotic fractures of which 1.6 million were at the hip, 1.7 million at the forearm and 1.4 million were clinical vertebral fractures. The greatest number of osteoporotic fractures occurred in Europe (34.8%). The total DALYs lost was 5.8 million of which 51% were accounted for by fractures that occurred in Europe and the Americas. World-wide, osteoporotic fractures accounted for 0.83% of the global burden of non-communicable disease and was 1.75% of the global burden in Europe. In Europe, osteoporotic fractures accounted for more DALYs lost than common cancers with the exception of lung cancer. For chronic musculo-skeletal disorders the DALYs lost in Europe due to osteoporosis (2.0 million) were less than for osteoarthrosis (3.1 million) but greater than for rheumatoid arthritis (1.0 million). We conclude that osteoporotic fractures are a significant cause of morbidity and mortality, particularly in the developed countries.
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                Author and article information

                Journal
                gs
                Gaceta Sanitaria
                Gac Sanit
                Sociedad Española de Salud Pública y Administración Sanitaria (SESPAS) (Barcelona, Barcelona, Spain )
                0213-9111
                February 2022
                : 36
                : 1
                : 12-18
                Affiliations
                [1] Arrasate-Mondragón Gipuzkoa orgnameBasque Health Service (Osakidetza) orgdiv1Debagoiena Integrated Healthcare Organisation orgdiv2Research Unit Spain
                [2] Barakaldo Bizkaia orgnameKronikgune Institute for Health Service Research Spain
                [3] Arrasate-Mondragón Gipuzkoa orgnameBasque Health Service (Osakidetza) orgdiv1Debagoiena Integrated Healthcare Organisation orgdiv2Department of Orthopaedic and Trauma Surgery Spain
                [5] Madrid orgname12 de Octubre University Hospital orgdiv1Department of Orthopaedic and Trauma Surgery Spain
                [6] Arrasate-Mondragón Gipuzkoa orgnameBasque Health Service (Osakidetza) orgdiv1Debagoiena Integrated Healthcare Organisation orgdiv2Department of Accounting Spain
                [4] Donostia-San Sebastián Gipuzkoa orgnameBiodonostia Health Research Institute Spain
                Article
                S0213-91112022000100012 S0213-9111(22)03600100012
                10.1016/j.gaceta.2021.02.006
                33888335
                fc93e209-36a5-4568-91e3-77700c514c83

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 11 February 2021
                : 10 May 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 30, Pages: 7
                Product

                SciELO Spain

                Categories
                Original Articles

                Cost-effectiveness,Hemiarthroplasty,Total hip arthroplasty,Hip replacement,Displaced femoral neck,Cost-utility,Hemiartroplastia,Prótesis de cadera total,Prótesis de cadera,Fractura de cuello de fémur desplazada,Coste-utilidad,Coste-efectividad

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