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1.
Arch Gerontol Geriatr ; 121: 105358, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38341956

RESUMO

BACKGROUND: The surge of disabled older people have brought enormous burdens to society. The aim of this study was to examine the impact of long-term care insurance (LTCI) implementation on mortality and changes in physical ability among disabled older adults. METHODS: This was a prospective observational study based on data from the government-led LTCI program in a pilot city of China from 2017 to 2021. Administrative data included the application survey of activities of daily living (ADL), the baseline characteristics and all-cause mortality. Return visit surveys of ADL were conducted between August 2021 and December 2021. A regression discontinuity model was used to analyze the impact of LTCI on mortality. RESULTS: A total of 12,930 individuals older than 65 years were included in this study, and 10,572 individuals were identified with severe disability and participated in the LTCI program. LTCI implementation significantly reduced mortality by 5.10 % (95 % CI, -9.30 % to -0.90 %) and extended the survival time by 33.74 days (95 % CI, 13.501 to 53.970). The ADL scores of the LTCI group dropped by 2.5 points on average, while the ADL scores of those did not participated in LTCI dropped by 25.0 points. The heterogeneity analysis revealed that the impact of LTCI on mortality reduction was more significant among females, individuals of lower age, those who were married, cared for by family members, and who lived in districts with rich care resources. CONCLUSIONS: LTCI implementation had a favorable impact on the mortality and physical ability of participants.


Assuntos
Atividades Cotidianas , Seguro de Assistência de Longo Prazo , Idoso , Feminino , Humanos , China/epidemiologia , Assistência de Longa Duração , Estudos Prospectivos , Masculino
2.
Clinicoecon Outcomes Res ; 16: 81-96, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38374959

RESUMO

Background: As healthcare costs are increasingly being shifted from payers to patients, it is important to understand the economic consequences of therapeutic strategies to both payers and patients. Objective: To determine the relative costs to Medicare and Medicare beneficiaries (patients) of warfarin, non-vitamin K oral anticoagulants (NOACs), and left atrial appendage closure (LAAC) for stroke risk reduction in nonvalvular atrial fibrillation. Methods: An economic model was developed to assess costs at 5 and 10 years. For warfarin and NOACs, inputs were derived from published meta-analyses; for LAAC with the Watchman device, inputs were derived from pooled 5-year PROTECT AF and PREVAIL trial results. The model captured therapy costs vs clinical event costs, including procedural complications and follow-up clinical outcomes. Costs were based on 2023 Medicare reimbursement and copayment rates. Results: At 10 years, overall LAAC costs ($48,337) were lower than those of NOACs ($81,198) and warfarin ($52,359). Overall LAAC costs were lower than those of NOACs by year 5 and warfarin by year 9. At 5 years, patient LAAC costs were lowest at $4,764, compared to $7,146 and $6,453 for NOACs and warfarin, respectively. LAAC patient costs were lower than those of NOACs by year 3 and warfarin by year 4. Clinical events comprised 96% of overall warfarin costs vs 48% for LAAC and 40% for NOACs. Conclusion: LAAC yielded the lowest overall and patient costs. Warfarin costs were largely driven by clinical events, which may represent an unplanned financial burden for patients. These considerations should be incorporated into shared decision-making discussions about stroke prophylaxis strategies.

3.
J Med Econ ; 26(1): 1357-1367, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37819734

RESUMO

AIMS: Left atrial appendage closure (LAAC) has been demonstrated to be cost-saving relative to oral anticoagulants for stroke prophylaxis in patients with non-valvular atrial fibrillation (NVAF) in the United States and Europe. This study assessed the cost-effectiveness of LAAC with the Watchman device relative to warfarin and direct oral anticoagulants (DOACs) for stroke risk reduction in NVAF from a Japanese public healthcare payer perspective. METHODS: A Markov model was developed with 70-year-old patients using a lifetime time horizon. LAAC clinical inputs were from pooled, 5-year PROTECT AF and PREVAIL trials; warfarin and DOAC inputs were from published meta-analyses. Baseline stroke and bleeding risks were from the SALUTE trial on LAAC. Cost inputs were from the Japanese Medical Data Vision database. Probabilistic and one-way sensitivity analyses were performed. RESULTS: Over the lifetime time horizon, LAAC was less costly than warfarin (savings of JPY 1,878,335, equivalent to US $17,600) and DOACs (savings of JPY 1,198,096, equivalent to US $11,226). LAAC also provided 1.500 more incremental quality-adjusted life years (QALYs) than warfarin and 0.996 more than DOACs. In probabilistic sensitivity analysis, LAAC was cost-effective relative to warfarin and DOACs in 99.98% and 99.73% of simulations, respectively. LAAC dominated (had higher cumulative QALYs and was less costly than) warfarin and DOACs in 89.94% and 83.35% of simulations, respectively. CONCLUSIONS: Over a lifetime time horizon, LAAC is cost-saving relative to warfarin and DOACs for stroke risk reduction in NVAF patients in Japan and is associated with improved quality-of-life.


This study examined the cost-effectiveness of left atrial appendage closure (LAAC) compared to oral anticoagulants for stroke risk reduction among individuals with a specific type of irregular heart rhythm called non-valvular atrial fibrillation (NVAF). This study evaluated the cost-effectiveness of LAAC using the Watchman device in comparison to warfarin and direct oral anticoagulants (DOACs) from the perspective of Japan's public healthcare system. To investigate this, a computer-based model was developed involving 70-year-old patients over their lifetime. Data from notable studies such as the PROTECT AF and PREVAIL trials (covering 5 years) for LAAC and published meta-analyses for warfarin and DOACs were incorporated into the model. Baseline stroke and bleeding risks were derived from the SALUTE trial on LAAC. Cost inputs were based on data from the Japanese Medical Data Vision database. Additionally, we performed thorough cost-effectiveness analyses, including probabilistic and one-way sensitivity assessments. Our findings revealed that, over a lifetime, LAAC was more cost-effective than both warfarin and DOACs. Further, LAAC contributed an additional 1.500 quality-adjusted life years (QALYs) compared to warfarin and 0.996 QALYs compared to DOACs. In the long-term, adopting LAAC as an alternative to warfarin and DOACs is a cost-effective strategy for reducing stroke risk in NVAF patients in Japan. Moreover, it is associated with enhanced quality-of-life. These findings hold significant implications for informing decision-making in healthcare policies and clinical practices for NVAF patients.


Assuntos
Apêndice Atrial , Fibrilação Atrial , Acidente Vascular Cerebral , Humanos , Idoso , Fibrilação Atrial/complicações , Fibrilação Atrial/tratamento farmacológico , Varfarina/uso terapêutico , Análise Custo-Benefício , Japão , Apêndice Atrial/cirurgia , Anticoagulantes/uso terapêutico , Acidente Vascular Cerebral/prevenção & controle , Acidente Vascular Cerebral/complicações , Resultado do Tratamento
4.
Int J Cardiovasc Imaging ; 39(12): 2427-2436, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37665486

RESUMO

Meticulous understanding of the mechanisms underpinning mitral regurgitation in atrial fibrillation (AF) patients is crucial to optimize therapeutic strategies. The morphologic characteristics of mitral valves in atrial functional mitral regurgitation (FMR) patients with and without left ventricular (LV) dysfunction were evaluated by high volume rate (HVR) three-dimensional transesophageal echocardiography (3D-TEE). In our study, 68 of 265 AF patients who underwent 3D-TEE were selected, including 36 patients with AF, FMR, and preserved LV function (AFMR group) and 32 patients with AF, FMR, and LV dysfunction (VFMR group). In addition, 36 fever patients without heart disease were included in the control group. Group comparisons were performed by one-way analysis of variance for continuous variables. The left atrium (LA) was enlarged in the AFMR and VFMR groups compared with the control group. The mitral annulus (MA) in the AFMR group was enlarged and flattened compared with the control group and was smaller than in the VFMR group. The annulus area fraction was significantly diminished in the AFMR and VFMR groups, indicative of reduced MA contractility. The posterior mitral leaflet (PML) angle was smallest in the AFMR group and largest in the control group, whereas the distal anterior mitral leaflet angle did not significantly differ among the three groups. LA remodeling causes expansion of the MA and reduced MA contractility, disruption of the annular saddle shape, and atriogenic PML tethering. Comparison of atrial FMR patients with and without LV dysfunction indicates that atriogenic PML tethering is an important factor that aggravates FMR. HVR 3D-TEE improves the 3D temporal resolution greatly.


Assuntos
Fibrilação Atrial , Ecocardiografia Tridimensional , Insuficiência da Valva Mitral , Disfunção Ventricular Esquerda , Humanos , Valva Mitral/diagnóstico por imagem , Fibrilação Atrial/complicações , Fibrilação Atrial/diagnóstico por imagem , Insuficiência da Valva Mitral/diagnóstico por imagem , Insuficiência da Valva Mitral/etiologia , Ecocardiografia Transesofagiana/métodos , Valor Preditivo dos Testes , Disfunção Ventricular Esquerda/etiologia , Disfunção Ventricular Esquerda/complicações , Ecocardiografia Tridimensional/métodos
5.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi ; 38(2): 310-316, 2021 Apr 25.
Artigo em Chinês | MEDLINE | ID: mdl-33913291

RESUMO

This study aims to explore the intraventricular pressure difference (IVPD) within left ventricle in patients with paroxysmal atrial fibrillation (PAF) by using the relative pressure imaging (RPI) of vector flow mapping (VFM). Twenty patients with paroxysmal atrial fibrillation (PAF) and thirty control subjects were enrolled in the study. Systolic and diastolic IVPD derived from VFM within left ventricle and conventional echocardiographic parameters were analyzed. It was found that the B-A IVPD of left ventricle in PAF patients showed the same pattern as controls-single peak and single valley during systole and double peaks and double valleys during diastole. Basal IVPD was the main component of base to apex IVPD (B-A IVPD). The isovolumetric systolic IVPD was associated with early systolic IVPD, early systolic IVPD was associated with late systolic IVPD, and late systolic IVPD was associated with isovolumic diastolic IVPD (all P < 0.05). The B-A IVPD and basal IVPD during isovolumetric systole, early systole, late systole and isovolumetric diastole in PAF patients significantly decreased (all P < 0.05). The study shows that the B-A IVPD pattern of the PAF group is the same as controls, but systolic B-A IVPD and basal IVPD are significantly reduced in PAF patients. VFM-derived RPI can evaluate left ventricular IVPD in PAF patients, providing a visually quantitative method for evaluating left ventricular hemodynamic mechanics in the patients with PAF.


Assuntos
Fibrilação Atrial , Fibrilação Atrial/diagnóstico por imagem , Diástole , Ventrículos do Coração , Humanos , Função Ventricular Esquerda , Pressão Ventricular
7.
Molecules ; 23(5)2018 04 26.
Artigo em Inglês | MEDLINE | ID: mdl-29701658

RESUMO

This study sought to determine the concentration and distribution of arsenic (As) species in Ophiocordyceps sinensis (O. sinensis), and to assess its edible hazard for long term consumption. The total arsenic concentrations, measured through inductively coupled plasma mass spectrometry (ICP-MS), ranged from 4.00 mg/kg to 5.25 mg/kg. As determined by HPLC-ICP-MS, the most concerning arsenic species­AsB, MMAV, DMAV, AsV, and AsШ­were either not detected (MMAV and DMAV) or were detected as minor As species (AsB: 1.4⁻2.9%; AsV: 1.3⁻3.2%, and AsШ: 4.1⁻6.0%). The major components were a cluster of unknown organic As (uAs) compounds with AsШ, which accounted for 91.7⁻94.0% of the As content. Based on the H2O2 test and the chromatography behavior, it can be inferred that, the uAs might not be toxic organic As. Estimated daily intake (EDI), hazard quotient (HQ), and cancer risk (CR) caused by the total As content; the sum of inorganic As (iAs) and uAs, namely i+uAs; and iAs exposure from long term O. sinensis consumption were calculated and evaluated through equations from the US Environmental Protection Agency and the uncertainties were analyzed by Monte-Carlo Simulation (MCS). EDItotal As and EDIi+uAs are approximately ten times more than EDIiAs; HQtotalAs and HQi+uAs > 1 while HQiAs < 1; and CRtotal As and CRi+uAs > 1 × 10−4 while CRiAs < 1 × 10−4. Thus, if the uAs is non-toxic, there is no particular risk to local consumers and the carcinogenic risk is acceptable for consumption of O. sinensis because the concentration of toxic iAs is very low.


Assuntos
Arsênio/análise , Monitoramento Ambiental/métodos , Saccharomycetales/química , Animais , Cromatografia Líquida de Alta Pressão/métodos , Peróxido de Hidrogênio/análise , Espectrometria de Massas/métodos , Método de Monte Carlo
8.
Value Health ; 21(3): 304-309, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29566837

RESUMO

OBJECTIVES: To evaluate the economic burden of treating skeletal-related events (SREs) in prostate cancer (PC) patients with bone metastasis from an insurer perspective. METHODS: We conducted a retrospective cohort analysis using claims data. PC patients with bone metastasis were identified in the MarketScan Databases between January 1, 2004, and March 1, 2014. The propensity score matching approach was used to match patients with SREs to those without SREs. A pseudo-SRE date was assigned to the control group. We compared 6-month and 12-month total costs of patients between two groups after the SRE or pseudo-SRE date. All costs were adjusted to 2014 US$. RESULTS: We identified 4083 PC men with bone metastasis, from which 787 patients with SREs were matched (1:1) to those without SREs. On average, the total 6-month cost of treating patients with SREs was $43,746 compared with $25,956 in the matched control cohort (P < 0.05). The largest proportion of differences in costs between the two groups was incurred in the first month after the SRE index date or the pseudo-SRE date ($14,979 vs. $4,849; P < 0.05) and was mostly attributable to outpatient visits (43.4%; P < 0.05) and inpatient hospitalization (33.1%; P < 0.05). The total cost per patient over the 12-month period was $22,171 higher among patients with SREs than among patients without SREs (P < 0.05). CONCLUSIONS: Our findings suggest that SREs impose considerable burden on health resource utilization for payers. Costs attributable to SREs were substantial. Most costs were incurred in the first month after the occurrence of SREs. Although costs decreased thereafter, they remained significantly higher for patients with SREs in subsequent months compared with patients without SREs.


Assuntos
Neoplasias Ósseas/economia , Neoplasias Ósseas/secundário , Análise Custo-Benefício/métodos , Custos de Cuidados de Saúde , Neoplasias da Próstata/economia , Idoso , Idoso de 80 Anos ou mais , Neoplasias Ósseas/terapia , Estudos de Coortes , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Pontuação de Propensão , Neoplasias da Próstata/terapia , Estudos Retrospectivos , Resultado do Tratamento
9.
Alzheimers Dement ; 13(10): 1174-1178, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28886338

RESUMO

INTRODUCTION: Medicare beneficiaries with Alzheimer's disease and related dementias (ADRDs) may have more potentially avoidable hospitalizations and readmissions than people without dementia. These hospitalizations may be indicative of access barriers, problems in continuity of care, inefficient resource use, and poor patient outcomes. METHODS: We examined national frequency and costs of ambulatory care sensitive condition hospitalizations and unplanned, all-cause, and condition-specific 30-day readmissions in >2.7 million fee-for-service ADRD patients using 2013 Medicare claims data. RESULTS: In 2013, 410,000 Medicare ADRD patients had ambulatory care sensitive condition hospitalizations or unplanned 30-day readmissions costing $4.7 billion. One in 10 ADRD patients were hospitalized for a potentially avoidable condition. Almost one in five hospitalized ADRD patients had an unplanned 30-day readmission. Readmission rates were highest among ADRD patients initially hospitalized for heart failure (22%) and chronic obstructive pulmonary disease (21%). DISCUSSION: Our findings may suggest potential deficiencies in ambulatory care and postdischarge care related to managing comorbidities among Medicare fee-for-service ADRD patients.


Assuntos
Doença de Alzheimer , Hospitalização/economia , Medicare , Readmissão do Paciente/economia , Idoso , Idoso de 80 Anos ou mais , Doença de Alzheimer/economia , Doença de Alzheimer/epidemiologia , Doença de Alzheimer/terapia , Planos de Pagamento por Serviço Prestado/economia , Feminino , Hospitalização/estatística & dados numéricos , Humanos , Masculino , Medicare/economia , Readmissão do Paciente/estatística & dados numéricos , Estudos Retrospectivos , Estados Unidos
10.
Appl Health Econ Health Policy ; 15(1): 75-83, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27492419

RESUMO

BACKGROUND: Malnutrition, which is associated with increased medical complications in older hospitalized patients, can be attenuated by providing nutritional supplements. OBJECTIVE: This study evaluates the cost effectiveness of a specialized oral nutritional supplement (ONS) in malnourished older hospitalized patients. METHODS: We conducted an economic evaluation alongside a multicenter, randomized, controlled clinical trial (NOURISH Study). The target population was malnourished older hospitalized patients in the USA. We used 90-day (base case) and lifetime (sensitivity analysis) time horizons. The study compared a nutrient-dense ONS, containing high protein and ß-hydroxy-ß-methylbutyrate to placebo. Outcomes included health-care costs, measured as the product of resource use and per unit cost; quality-adjusted life-years (QALYs) (90-day time horizon); life-years (LYs) saved (lifetime time horizon); and the incremental cost-effectiveness ratio (ICER). All costs were inflated to 2015 US dollars. RESULTS: In the base-case analysis, 90-day treatment group costs averaged US$22,506 per person, compared to US$22,133 for the control group. Treatment group patients gained 0.011 more QALYs than control group subjects, reflecting the treatment group's significantly greater probability of survival through 90 days' follow-up, as reported by the clinical trial. Hence, the 90-day follow-up period ICER was US$33,818/QALY. Assuming a lifetime time horizon, estimated treatment group life expectancy exceeded control group life expectancy by 0.71 years. Hence, the lifetime ICER was US$524/LY. The follow-up period for the trial was relatively short. Some of the patients were lost to follow-up, thus reducing collection of health-care utilization data during the clinical trial. CONCLUSION: Our findings suggest that the investigative ONS cost-effectively extends the lives of malnourished hospitalized patients.


Assuntos
Hospitalização/economia , Desnutrição/economia , Terapia Nutricional/economia , Idoso , Análise Custo-Benefício , Custos de Cuidados de Saúde/estatística & dados numéricos , Custos Hospitalares , Hospitalização/estatística & dados numéricos , Humanos , Desnutrição/terapia , Terapia Nutricional/métodos , Anos de Vida Ajustados por Qualidade de Vida
11.
PLoS One ; 11(12): e0168512, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-28005986

RESUMO

INTRODUCTION: Calculating the cost per disability-adjusted life years (DALYs) averted associated with interventions is an increasing popular means of assessing the cost-effectiveness of strategies to improve population health. However, there has been no systematic attempt to characterize the literature and its evolution. METHODS: We conducted a systematic review of cost-effectiveness studies reporting cost-per-DALY averted from 2000 through 2015. We developed the Global Health Cost-Effectiveness Analysis (GHCEA) Registry, a repository of English-language cost-per-DALY averted studies indexed in PubMed. To identify candidate studies, we searched PubMed for articles with titles or abstracts containing the phrases "disability-adjusted" or "DALY". Two reviewers with training in health economics independently reviewed each article selected in our abstract review, gathering information using a standardized data collection form. We summarized descriptive characteristics on study methodology: e.g., intervention type, country of study, study funder, study perspective, along with methodological and reporting practices over two time periods: 2000-2009 and 2010-2015. We analyzed the types of costs included in analyses, the study quality on a scale from 1 (low) to 7 (high), and examined the correlation between diseases researched and the burden of disease in different world regions. RESULTS: We identified 479 cost-per-DALY averted studies published from 2000 through 2015. Studies from Sub-Saharan Africa comprised the largest portion of published studies. The disease areas most commonly studied were communicable, maternal, neonatal, and nutritional disorders (67%), followed by non-communicable diseases (28%). A high proportion of studies evaluated primary prevention strategies (59%). Pharmaceutical interventions were commonly assessed (32%) followed by immunizations (28%). Adherence to good practices for conducting and reporting cost-effectiveness analysis varied considerably. Studies mainly included formal healthcare sector costs. A large number of the studies in Sub-Saharan Africa addressed high-burden conditions such as HIV/AIDS, tuberculosis, neglected tropical diseases and malaria, and diarrhea, lower respiratory infections, meningitis, and other common infectious diseases. CONCLUSION: The Global Health Cost-Effectiveness Analysis Registry reveals a growing and diverse field of cost-per-DALY averted studies. However, study methods and reporting practices have varied substantially.


Assuntos
Avaliação da Deficiência , Carga Global da Doença/economia , Expectativa de Vida , Anos de Vida Ajustados por Qualidade de Vida , Análise Custo-Benefício , Humanos
12.
J Am Geriatr Soc ; 64(8): 1549-57, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27295430

RESUMO

OBJECTIVES: To characterize Medicare expenditure and usage trends in individuals with a coded diagnosis of Alzheimer's disease and related dementia (ADRD) or mild cognitive impairment (MCI) during the periods leading up to and after diagnosis. DESIGN: Retrospective observational cohort study. SETTING: Five percent sample of the 2009 to 2013 Medicare claims files. PARTICIPANTS: Individuals newly diagnosed with ADRD (n = 25,916) or MCI (n = 2,784), each with a propensity-score matched control subject. MEASUREMENTS: Medicare expenditures and usage during the 24 months before and after a new diagnosis of ADRD or MCI. RESULTS: Medicare expenditures were 42% higher in participants with ADRD ($10,622 vs $15,091, P < .001) and 41% higher in those with MCI ($9,728 vs $13,691, P < .001) during the year before diagnosis than in matched controls. Medicare expenditures of participants with ADRD increased to $27,126 for the first 12 months immediately after diagnosis and decreased to $17,257 during the 12 months after that. For participants with MCI, average Medicare expenditures were $20,386 for the 12 months after diagnosis and $14,286 for the 12 months after that. Use of inpatient care, postacute skilled nursing facility care, and home health care increased substantially after diagnosis of ADRD or MCI. CONCLUSION: Participants with ADRD and MCI incurred significantly higher Medicare expenditures than matched controls, even before they received a formal diagnosis. Medicare expenditures of individuals with ADRD and MCI may start to increase at least 12 months before their diagnosis, peak during the first few months immediately after diagnosis, and decrease afterward but remain at a higher level than before diagnosis. These findings highlight the importance of early diagnosis and indicate the need for complex case management to coordinate care transitions for individuals with ADRD and MCI.


Assuntos
Doença de Alzheimer/diagnóstico , Doença de Alzheimer/economia , Disfunção Cognitiva/diagnóstico , Disfunção Cognitiva/economia , Gastos em Saúde/estatística & dados numéricos , Medicare/economia , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Estudos de Coortes , Feminino , Humanos , Masculino , Pontuação de Propensão , Estudos Retrospectivos , Estados Unidos
13.
J Ultrasound Med ; 35(5): 965-73, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27036165

RESUMO

OBJECTIVES: Dissipative energy loss derived from vector flow mapping represents the viscous dissipation of turbulent blood flow. We aimed to determine the left ventricular (LV) energy loss in patients with end-stage renal disease (ESRD). METHODS: Patients with ESRD and a preserved LV ejection fraction, who consisted of a group receiving peritoneal dialysis, a group receiving hemodialysis, and a group receiving preparation for dialysis initiation, were examined by echocardiography; a group of healthy control participants were examined as well. Vector flow mapping analysis was then performed from the apical 4-chamber view to calculate the energy loss during diastole and systole in the left ventricle. RESULTS: Conventional transthoracic echocardiography and LV energy loss calculations were successfully performed in 63 cases and 50 controls. The patients with ESRD had significantly higher diastolic energy loss [median (interquartile range), 71.73 (46.08-106.75) versus 23.32 (17.17-29.26) mW/m; P < .001] and higher systolic energy loss [25.28 (19.03-33.93) versus 12.52 (9.35-16.47) mW/m; P < .001]. A significant difference in diastolic energy loss between the peritoneal dialysis and preparation groups was found [54.92 (39.28-89.94) versus 84.82 (62.58-171.4) mW/m; P = .04]. In patients with ESRD, the log-transformed diastolic energy loss had a significant association with the peak early diastolic transmitral flow velocity (P = .011), peak early diastolic transmitral flow velocity-to-peak early diastolic mitral annular flow velocity ratio (P = .001), LV mass index (P = .017), and heart rate (P = .003). CONCLUSIONS: Impaired blood flow efficiency was detected in patients with ESRD by using dissipative energy loss derived from vector flow mapping. The energy loss value could be a novel parameter for evaluating the ventricular workload of uremic hearts in terms of fluid mechanics.


Assuntos
Falência Renal Crônica/fisiopatologia , Vetorcardiografia/métodos , Disfunção Ventricular Esquerda/diagnóstico por imagem , Disfunção Ventricular Esquerda/fisiopatologia , Adulto , Idoso , Velocidade do Fluxo Sanguíneo , Feminino , Ventrículos do Coração/diagnóstico por imagem , Ventrículos do Coração/fisiopatologia , Humanos , Falência Renal Crônica/complicações , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Disfunção Ventricular Esquerda/complicações , Adulto Jovem
15.
Artigo em Inglês | MEDLINE | ID: mdl-26478989

RESUMO

Published literature lacks consensus, and most guidelines lack definitive recommendations as to whether cost-effectiveness analyses (CEAs) should include all "future" costs or distinguish between related and unrelated medical costs. This systematic review of oncology CEAs evaluated cost methods used and the impact on the cost-effectiveness of incorporating different cost categories, including costs due to study intervention, related medical costs of the treated condition, and unrelated medical costs. Of the 59 studies reviewed, none included medical costs unrelated to the treated condition and 14 studies (32%) excluded direct medical costs related to the condition but not the evaluated intervention. Recomputing ICERs using different cost categories altered overall cost-effectiveness conclusions. The authors propose conventional CEA methods may implicitly penalize therapies that add "expensive" life years for chronically ill patients. Presenting ICERs computed with and without disease-attributable costs can help better convey how much the treatment itself contributes to overall costs.


Assuntos
Análise Custo-Benefício/métodos , Custos de Cuidados de Saúde , Neoplasias/terapia , Humanos , Expectativa de Vida , Neoplasias/economia
16.
Value Health ; 18(2): 308-14, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25773567

RESUMO

OBJECTIVES: To systematically review the cost-effectiveness of diabetes interventions, identify high-value diabetes services, and estimate potential gains from increasing their utilization. METHODS: The study consisted of two steps. First, we reviewed cost-utility analyses (CUAs) related to diabetes published through the end of 2012, using the Tufts Medical Center Cost-Effectiveness Analysis Registry (www.cearegistry.org). We used logistic regression to examine factors independently associated with favorable cost-effective ratios. Second, we used the Humedica electronic medical records to estimate potential savings and health benefits gained by shifting patients currently receiving low-value services to high-value alternatives. RESULTS: We identified 196 diabetes CUAs, of which 55% examined pharmaceuticals. Most (70%) diabetes CUAs focused on treatment rather than prevention. Most used a health care payer perspective and were industry-sponsored. Of the 497 published cost-utility ratios, 82% examined an intervention recommended by diabetes guidelines. Approximately 73% of the interventions were cost-saving or below $50,000 per quality-adjusted life-year. Logistic regression analysis showed that higher-quality CUAs, CUAs conducted from the US perspective, surgical interventions, and guideline-recommended interventions were more likely to report favorable ratios. Of the 7907 eligible patients with diabetes in our sample, up to 7117 could in principle be shifted to cost-saving treatments, reducing costs by $12.5 million and gaining more than 1938 quality-adjusted life-years over a lifetime. CONCLUSIONS: Most diabetes interventions evaluated by CUAs are recommended by practice guidelines and may provide good value for money. Our results indicate that patients with diabetes and the health care system could potentially benefit from shifting to the greater use of high-value services.


Assuntos
Análise Custo-Benefício/métodos , Diabetes Mellitus/economia , Registros Eletrônicos de Saúde/economia , Anos de Vida Ajustados por Qualidade de Vida , Sistema de Registros , Diabetes Mellitus/epidemiologia , Diabetes Mellitus/terapia , Humanos
17.
Am J Manag Care ; 20(8): 641-8, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25295678

RESUMO

OBJECTIVES: Value-based insurance design (V-BID) has emerged as an approach to improve health outcomes and contain healthcare costs by encouraging use of high-value care. We estimated the impact of a V-BID for osteoporosis treatments using comparative effectiveness evidence and real-world data from a California health insurance plan to estimate the benefits of the design's implementation. METHODS: This study consisted of 4 steps. First, we reviewed randomized clinical trials including osteoporosis treatments-alendronate, ibandronate, risedronate, raloxifene, and teriparatide-reported in a recent Agency for Health Research Quality systematic review. Second, we performed a network meta-analysis to synthesize data from the clinical trials and estimate the comparative effectiveness of included treatments. Third, we implemented a V-BID by removing co-payments for the most effective treatments. Fourth, using a Monte Carlo simulation, we estimated the impact of the V-BID in terms of fracture reduction and cost-savings. RESULTS: Thirty-two randomized controlled trials were included in the network meta-analysis. We estimated that alendronate, risedronate, and teriparatide have the highest probability of being most effective across each fracture type-vertebral, hip, and nonvertebral/ nonhip. After eliminating co-payments, (ie, reducing them to zero), for these treatments, we estimated the health plan would experience a 7% (n = 287) decrease in fractures and an 8% ($6.8 million) decrease in costs. CONCLUSIONS: Our study illustrates the benefits of comparative effectiveness evidence in V-BID development. We show that where clinical trials are lacking, network meta-analysis can provide valuable insights into the potential clinical and economic benefits of V-BID.


Assuntos
Seguro Saúde/organização & administração , Metanálise como Assunto , Aquisição Baseada em Valor/organização & administração , California , Pesquisa Comparativa da Efetividade , Redução de Custos/métodos , Humanos , Osteoporose/economia , Osteoporose/terapia , Reembolso de Incentivo/organização & administração , Resultado do Tratamento
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