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1.
Med Care ; 62(8): 521-529, 2024 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-38889200

RESUMO

BACKGROUND: Recent efforts to increase access to kidney transplant (KTx) in the United States include increasing referrals to transplant programs, leading to more pretransplant services. Transplant programs reconcile the costs of these services through the Organ Acquisition Cost Center (OACC). OBJECTIVE: The aim of this study was to determine the costs associated with pretransplant services by applying microeconomic methods to OACC costs reported by transplant hospitals. RESEARCH DESIGN, SUBJECTS, AND MEASURES: For all US adult kidney transplant hospitals from 2013 through 2018 (n=193), we crosslinked the total OACC costs (at the hospital-fiscal year level) to proxy measures of volumes of pretransplant services. We used a multiple-output cost function, regressing total OACC costs against proxy measures for volumes of pretransplant services and adjusting for patient characteristics, to calculate the marginal cost of each pretransplant service. RESULTS: Over 1015 adult hospital-years, median OACC costs attributable to the pretransplant services were $5 million. Marginal costs for the pretransplant services were: initial transplant evaluation, $9k per waitlist addition; waitlist management, $2k per patient-year on the waitlist; deceased donor offer management, $1k per offer; living donor evaluation, procurement and follow-up: $26k per living donor. Longer time on dialysis among patients added to the waitlist was associated with higher OACC costs at the transplant hospital. CONCLUSIONS: To achieve the policy goals of more access to KTx, sufficient funding is needed to support the increase in volume of pretransplant services. Future studies should assess the relative value of each service and explore ways to enhance efficiency.


Assuntos
Transplante de Rim , Listas de Espera , Humanos , Transplante de Rim/economia , Transplante de Rim/estatística & dados numéricos , Estados Unidos , Masculino , Feminino , Pessoa de Meia-Idade , Definição da Elegibilidade , Adulto , Obtenção de Tecidos e Órgãos/economia , Custos de Cuidados de Saúde/estatística & dados numéricos
2.
Clin Kidney J ; 17(2): sfae025, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38389710

RESUMO

Background: The Dapagliflozin and Prevention of Adverse Outcomes in CKD (DAPA-CKD) trial enrolled patients with estimated glomerular filtration rate 25-75 mL/min/1.73 m2 and urine albumin-to-creatinine ratio >200 mg/g. The Dapagliflozin Effect on CardiovascuLAR Events-Thrombolysis in Myocardial Infarction 58 (DECLARE-TIMI 58) trial enrolled patients with type 2 diabetes, a higher range of kidney function and no albuminuria criterion. The study objective was to estimate the cost-effectiveness of dapagliflozin in a broad chronic kidney disease population based on these two trials in the UK, Spain, Italy and Japan. Methods: We adapted a published Markov model based on the DAPA-CKD trial but to a broader population, irrespective of urine albumin-to-creatinine ratio, using patient-level data from the DAPA-CKD and DECLARE-TIMI 58 trials. We sourced cost and utility inputs from literature and the DAPA-CKD trial. The analysis considered healthcare system perspectives over a lifetime horizon. Results: Treatment with dapagliflozin was predicted to attenuate disease progression and extend projected life expectancy by 0.64 years (12.5 versus 11.9 years, undiscounted) in the UK, with similar estimates in other settings. Clinical benefits translated to mean quality-adjusted life year (QALY; discounted) gains between 0.45 and 0.68 years across countries. Incremental cost-effectiveness ratios in the UK, Spain, Italy and Japan ($10 676/QALY, $14 479/QALY, $7771/QALY and $13 723/QALY, respectively) were cost-effective at country-specific willingness-to-pay thresholds. Subgroup analyses suggest dapagliflozin is cost-effective irrespective of urinary albumin-to-creatine ratio and type 2 diabetes status. Conclusion: Treatment with dapagliflozin may be cost-effective for patients across a wider spectrum of estimated glomerular filtration rates and albuminuria than previously demonstrated, with or without type 2 diabetes, in the UK, Spanish, Italian and Japanese healthcare systems.

3.
Am J Kidney Dis ; 83(1): 28-36.e1, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37678740

RESUMO

RATIONALE & OBJECTIVE: Estimates of mortality from kidney failure are misleading because the mortality from kidney failure is inseparable from the mortality attributed to comorbid conditions. We sought to develop an alternative method to reduce the bias in estimating mortality due to kidney failure using life table methods. STUDY DESIGN: Longitudinal cohort study. SETTING & PARTICIPANTS: Using data from the US Renal Data System and the Medicare 5% sample, we identified an incident cohort of patients, age 66+, who first had kidney failure in 2009 and a similar general population cohort without kidney failure. EXPOSURE: Kidney failure. OUTCOME: Death. ANALYTICAL APPROACH: We created comorbidity, age, sex, race, and year-specific life tables to estimate relative survival of patients with incident kidney failure and to attain an estimate of excess kidney failure-related deaths. Estimates were compared with those based on standard life tables (not adjusted for comorbidity). RESULTS: The analysis included 31,944 adults with kidney failure with a mean age of 77±7 years. The 5-year relative survival was 31% using standard life tables (adjusted for age, sex, race, and year) versus 36% using life tables also adjusted for comorbidities. Compared with other chronic diseases, patients with kidney failure have among the lowest relative survival. Patients with incident kidney failure ages 66-70 and 76-80 have a survival comparable to adults without kidney failure roughly 86-90 and 91-95 years old, respectively. LIMITATIONS: Relative survival estimates can be improved by narrowing the specificity of the covariates collected (eg, disease severity and ethnicity). CONCLUSIONS: Estimates of survival relative to a matched general population partition the mortality due to kidney failure from other causes of death. Results highlight the immense burden of kidney failure on mortality and the importance of disease prevention efforts among older adults. PLAIN-LANGUAGE SUMMARY: Estimates of death due to kidney failure can be misleading because death information from kidney failure is intertwined with death due to aging and other chronic diseases. Life tables are an old method, commonly used by actuaries and demographers to describe the life expectancy of a population. We developed life tables specific to a patient's age, sex, year, race, and comorbidity. Survival is derived from the life tables as the percentage of patients who are still alive in a specified period. By comparing survival of patients with kidney failure to the survival of people from the general population, we estimate that patients with kidney failure have one-third the chance of survival in 5 years compared with people with similar demographics and comorbidity but without kidney failure. The importance of this measure is that it provides a quantifiable estimate of the immense mortality burden of kidney failure.


Assuntos
Medicare , Insuficiência Renal , Humanos , Idoso , Estados Unidos/epidemiologia , Idoso de 80 Anos ou mais , Estudos Longitudinais , Expectativa de Vida , Insuficiência Renal/epidemiologia , Doença Crônica
4.
Med Decis Making ; 43(5): 576-586, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37170943

RESUMO

BACKGROUND: Under the current US kidney allocation system, older candidates receive a disproportionately small share of deceased donor kidneys despite a reserve of potentially usable kidneys that could shorten their wait times. To consider potential health gains from increasing access to kidneys for these candidates, we developed and calibrated a microsimulation model of the transplantation process and long-term outcomes for older deceased donor kidney transplant candidates. METHODS: We estimated risk equations for transplant outcomes using the Scientific Registry of Transplant Recipients (SRTR), which contains data on all US transplants (2010-2019). A microsimulation model combined these equations to account for competing events. We calibrated the model to key transplant outcomes and used acceptance sampling, retaining the best-fitting 100 parameter sets. We then examined life expectancy gains from allocating kidneys even of lower quality across patient subgroups defined by age and designated race/ethnicity. RESULTS: The best-fitting 100 parameter sets (among 4,000,000 sampled) enabled our model to closely match key transplant outcomes. The model demonstrated clear survival benefits for those who receive a deceased donor kidney, even a lower quality one, compared with remaining on the waitlist where there is a risk of removal. The expected gain in survival from receiving a lower quality donor kidney was consistent gains across age and race/ethnic subgroups. LIMITATIONS: Limited available data on socioeconomic factors. CONCLUSIONS: Our microsimulation model accurately replicates a range of key kidney transplant outcomes among older candidates and demonstrates that older candidates may derive substantial benefits from transplantation with lower quality kidneys. This model can be used to evaluate policies that have been proposed to address concerns that the current system disincentivizes deceased donor transplants for older patients. HIGHLIGHTS: The microsimulation model was consistent with the data after calibration and accurately simulated the transplantation process for older deceased donor kidney transplant candidates.There are clear survival benefits for older transplant candidates who receive deceased donor kidneys, even lower quality ones, compared with remaining on the waitlist.This model can be used to evaluate policies aimed at increasing transplantation among older candidates.


Assuntos
Transplante de Rim , Doadores de Tecidos , Transplantados , Humanos , Transplante de Rim/métodos , Medição de Risco , Fatores Etários , Simulação por Computador , Estados Unidos , Resultado do Tratamento
5.
Ann Intern Med ; 176(6): 788-797, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37216661

RESUMO

BACKGROUND: Sodium-glucose cotransporter-2 (SGLT2) inhibitors have the potential to alter the natural history of chronic kidney disease (CKD), and they should be included in cost-effectiveness analyses of screening for CKD. OBJECTIVE: To determine the cost-effectiveness of adding population-wide screening for CKD. DESIGN: Markov cohort model. DATA SOURCES: NHANES (National Health and Nutrition Examination Survey), U.S. Centers for Medicare & Medicaid Services data, cohort studies, and randomized clinical trials, including the DAPA-CKD (Dapagliflozin and Prevention of Adverse Outcomes in Chronic Kidney Disease) trial. TARGET POPULATION: Adults. TIME HORIZON: Lifetime. PERSPECTIVE: Health care sector. INTERVENTION: Screening for albuminuria with and without adding SGLT2 inhibitors to the current standard of care for CKD. OUTCOME MEASURES: Costs, quality-adjusted life-years (QALYs), and incremental cost-effectiveness ratios (ICERs), all discounted at 3% annually. RESULTS OF BASE-CASE ANALYSIS: One-time CKD screening at age 55 years had an ICER of $86 300 per QALY gained by increasing costs from $249 800 to $259 000 and increasing QALYs from 12.61 to 12.72; this was accompanied by a decrease in the incidence of kidney failure requiring dialysis or kidney transplant of 0.29 percentage points and an increase in life expectancy from 17.29 to 17.45 years. Other options were also cost-effective. During ages 35 to 75 years, screening once prevented dialysis or transplant in 398 000 people and screening every 10 years until age 75 years cost less than $100 000 per QALY gained. RESULTS OF SENSITIVITY ANALYSIS: When SGLT2 inhibitors were 30% less effective, screening every 10 years during ages 35 to 75 years cost between $145 400 and $182 600 per QALY gained, and price reductions would be required for screening to be cost-effective. LIMITATION: The efficacy of SGLT2 inhibitors was derived from a single randomized controlled trial. CONCLUSION: Screening adults for albuminuria to identify CKD could be cost-effective in the United States. PRIMARY FUNDING SOURCE: Agency for Healthcare Research and Quality, Veterans Affairs Office of Academic Affiliations, and National Institute of Diabetes and Digestive and Kidney Diseases.


Assuntos
Insuficiência Renal Crônica , Inibidores do Transportador 2 de Sódio-Glicose , Adulto , Humanos , Estados Unidos , Idoso , Pessoa de Meia-Idade , Análise de Custo-Efetividade , Inquéritos Nutricionais , Albuminúria , Análise Custo-Benefício , Medicare , Insuficiência Renal Crônica/complicações , Insuficiência Renal Crônica/diagnóstico , Anos de Vida Ajustados por Qualidade de Vida
6.
JAMA Intern Med ; 183(2): 134-141, 2023 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-36595271

RESUMO

Importance: Testing for coronary heart disease (CHD) in asymptomatic kidney transplant candidates before transplant is widespread and endorsed by various professional societies, but its association with perioperative outcomes is unclear. Objective: To estimate the association of pretransplant CHD testing with rates of death and myocardial infarction (MI). Design, Setting, and Participants: This retrospective cohort study included all adult, first-time kidney transplant recipients from January 2000 through December 2014 in the US Renal Data System with at least 1 year of Medicare enrollment before and after transplant. An instrumental variable (IV) analysis was used, with the program-level CHD testing rate in the year of the transplant as the IV. Analyses were stratified by study period, as the rate of CHD testing varied over time. A combination of US Renal Data System variables and Medicare claims was used to ascertain exposure, IV, covariates, and outcomes. Exposures: Receipt of nonurgent invasive or noninvasive CHD testing during the 12 months preceding kidney transplant. Main Outcomes and Measures: The primary outcome was a composite of death or acute MI within 30 days of after kidney transplant. Results: The cohort comprised 79 334 adult, first-time kidney transplant recipients (30 147 women [38%]; 25 387 [21%] Black and 48 394 [61%] White individuals; mean [SD] age of 56 [14] years during 2012 to 2014). The primary outcome occurred in 4604 patients (244 [5.3%]; 120 [2.6%] death, 134 [2.9%] acute MI). During the most recent study period (2012-2014), the CHD testing rate was 56% in patients in the most test-intensive transplant programs (fifth IV quintile) and 24% in patients at the least test-intensive transplant program (first IV quintile, P < .001); this pattern was similar across other study periods. In the main IV analysis, compared with no testing, CHD testing was not associated with a change in the rate of primary outcome (rate difference, 1.9%; 95% CI, 0%-3.5%). The results were similar across study periods, except for 2000 to 2003, during which CHD testing was associated with a higher event rate (rate difference, 6.8%; 95% CI, 1.8%-12.0%). Conclusions and Relevance: The results of this cohort study suggest that pretransplant CHD testing was not associated with a reduction in early posttransplant death or acute MI. The study findings potentially challenge the ubiquity of CHD testing before kidney transplant and should be confirmed in interventional studies.


Assuntos
Doença das Coronárias , Transplante de Rim , Infarto do Miocárdio , Adulto , Humanos , Feminino , Idoso , Estados Unidos/epidemiologia , Adolescente , Transplante de Rim/efeitos adversos , Estudos Retrospectivos , Estudos de Coortes , Medicare , Doença das Coronárias/diagnóstico , Doença das Coronárias/epidemiologia , Doença das Coronárias/cirurgia , Infarto do Miocárdio/diagnóstico , Infarto do Miocárdio/epidemiologia , Infarto do Miocárdio/etiologia
7.
Am J Kidney Dis ; 81(3): 270-280.e1, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36162617

RESUMO

RATIONALE & OBJECTIVE: Posttransplant hyperparathyroidism is common, and treatment practices are poorly characterized. The goal of this study was to examine the incidence, associations, and outcomes of posttransplant parathyroidectomy and calcimimetic use in a cohort of Medicare-insured US kidney transplant recipients. STUDY DESIGN: Retrospective observational cohort study. SETTING & PARTICIPANTS: We used the US Renal Data System to extract demographic, clinical, and prescription data from Medicare Parts A, B, and D-insured patients who received their first kidney transplant in 2007-2013. We excluded patients with pretransplant parathyroidectomy. PREDICTORS: Calendar year of transplantation and pretransplant patient characteristics. OUTCOME: (1) Incidence of and secular trends in parathyroidectomy and cinacalcet use in the 3 years after transplant; (2) 90-day outcomes after posttransplant parathyroidectomy and cinacalcet initiation. ANALYTICAL APPROACH: Temporal trends and pretransplant correlates of parathyroidectomy and cinacalcet use were assessed using proportional hazards models and multivariable Poisson regression, respectively. RESULTS: The inclusion criteria were met by 30,127 patients, of whom 10,707 used cinacalcet before transplant, 551 underwent posttransplant parathyroidectomy, and 5,413 filled≥1 prescription for cinacalcet. The rate of posttransplant parathyroidectomy was stable over time. By contrast, cinacalcet use increased during the period studied. Long dialysis vintage and pretransplant cinacalcet use were strongly associated with posttransplant parathyroidectomy and cinacalcet use. Roughly 1 in 4 patients were hospitalized within 90 days of posttransplant parathyroidectomy, with hypocalcemia-related diagnoses being the most common complication. Parathyroidectomy (vs cinacalcet initiation) was not associated with an increase in acute kidney injury. LIMITATIONS: We lacked access to laboratory data to help assess the severity of secondary/tertiary hyperparathyroidism. The cohort was limited to Medicare beneficiaries. CONCLUSIONS: Almost one-fifth of our study cohort was treated with parathyroidectomy and/or cinacalcet. Further studies are needed to establish the optimal treatment for posttransplant hyperparathyroidism.


Assuntos
Hiperparatireoidismo Secundário , Falência Renal Crônica , Transplante de Rim , Humanos , Idoso , Estados Unidos , Cinacalcete/uso terapêutico , Calcimiméticos/uso terapêutico , Paratireoidectomia , Estudos Retrospectivos , Medicare , Hiperparatireoidismo Secundário/tratamento farmacológico , Hormônio Paratireóideo , Cálcio , Falência Renal Crônica/complicações
8.
Value Health ; 25(12): 2028-2033, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35690519

RESUMO

OBJECTIVES: The aim of this study was to show how the US government could save approximately 47 000 patients with chronic kidney failure each year from suffering on dialysis and premature death by compensating living kidney donors enough to completely end the kidney shortage. METHODS: Supply and demand analysis was used to estimate the number of donated kidneys needed to end the kidney shortage and the level of compensation required to encourage this number of donations. These results were then input into a detailed cost-benefit analysis to estimate the economic value of kidney transplantation to (1) the average kidney recipient and their caregiver, (2) taxpayers, and (3) society in general. RESULTS: We estimate half of patients diagnosed with kidney failure each year-approximately 62 000 patients-could be saved from suffering on dialysis and premature death if they could receive an average of 1½ kidney transplants. However, currently there are only enough donated kidneys to save approximately 15 000 patients. To encourage sufficient donations to save the other 47 000 patients, the government would have to compensate living kidney donors approximately $77 000 (±50%) per donor. The value of transplantation to an average kidney recipient (and caregiver) would be approximately $1.5 million, and the savings from the recipient not needing expensive dialysis treatments would be approximately $1.2 million. CONCLUSIONS: This analysis reveals the huge benefit that compensating living kidney donors would provide to patients with kidney failure and their caregivers and, conversely, the huge cost that is being imposed on these patients and their families by the current legal prohibition against such compensation.


Assuntos
Falência Renal Crônica , Transplante de Rim , Humanos , Estados Unidos , Análise Custo-Benefício , Doadores Vivos , Falência Renal Crônica/cirurgia , Diálise Renal
9.
Kidney360 ; 3(3): 516-523, 2022 03 31.
Artigo em Inglês | MEDLINE | ID: mdl-35582172

RESUMO

Background: Coronary artery disease (CAD) screening in asymptomatic kidney transplant candidates is widespread but not well supported by contemporary cardiology literature. In this study we describe temporal trends in CAD screening before kidney transplant in the United States. Methods: Using the United States Renal Data System, we examined Medicare-insured adults who received a first kidney transplant from 2000 through 2015. We stratified analysis on the basis of whether the patient's comorbidity burden met guideline definitions of high risk for CAD. We examined temporal trends in nonurgent CAD tests within the year before transplant and the composite of death and nonfatal myocardial infarction in the 30 days after transplant. Results: Of 94,832 kidney transplant recipients, 37,139 (39%) underwent at least one nonurgent CAD test in the 1 year before transplant. From 2000 to 2015, the transplant program waitlist volume had increased as transplant volume stayed constant, whereas patients in the later eras had a slightly higher comorbidity burden (older, longer dialysis vintage, and a higher prevalence of diabetes mellitus and CAD). The likelihood of CAD test in the year before transplant increased from 2000 through 2003 and remained relatively stable thereafter. When stratified by CAD risk status, test rates decreased modestly in patients who were high risk but remained constant in patients who were low risk after 2008. Death or nonfatal myocardial infarction within 30 days after transplant decreased from 3% in 2000 to 2% in 2015. Nuclear perfusion scan was the most frequent modality of testing throughout the examined time periods. Conclusions: CAD testing rates before kidney transplantation have remained constant from 2000 through 2015, despite widespread changes in cardiology guidelines and practice.


Assuntos
Doença da Artéria Coronariana , Transplante de Rim , Infarto do Miocárdio , Adulto , Idoso , Doença da Artéria Coronariana/diagnóstico , Humanos , Transplante de Rim/efeitos adversos , Medicare , Infarto do Miocárdio/diagnóstico , Diálise Renal , Estados Unidos/epidemiologia
10.
JAMA Netw Open ; 5(3): e221847, 2022 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-35267033

RESUMO

Importance: While recent policy reforms aim to improve access to kidney transplantation for patients with end-stage kidney disease, the cost implications of kidney waiting list expansion are not well understood. The Organ Acquisition Cost Center (OACC) is the mechanism by which Medicare reimburses kidney transplantation programs, at cost, for costs attributable to kidney transplantation evaluation and waiting list management, but these costs have not been well described to date. Objectives: To describe temporal trends in mean OACC costs per kidney transplantation and to identify factors most associated with cost. Design, Setting, and Participants: This economic evaluation included all kidney transplantation waiting list candidates and recipients in the United States from 2012 to 2017. A population-based study of cost center reports was conducted using data from all Center of Medicare & Medicaid-certified transplantation hospitals. Data analysis was conducted from June to August 2021. Exposures: Year, local price index, transplantation and waiting list volume of transplantation program, and comorbidity burden. Main Outcomes and Measures: Mean OACC costs per kidney transplantation. Results: In 1335 hospital-years from 2012 through 2017, Medicare's share of OACC costs increased from $0.95 billion in 2012 to $1.32 billion in 2017 (3.7% of total Medicare End-Stage Renal Disease program expenditure). Median (IQR) OACC costs per transplantation increased from $81 000 ($66 000 to $103 000) in 2012 to $100 000 ($82 000 to $125 000) in 2017. Kidney organ procurement costs contributed to 36% of mean OACC costs per transplantation throughout the study period. During the study period, transplantation hospitals experienced increases in kidney waiting list volume, kidney waiting list active volume, kidney transplantation volume, and comorbidity burden. For a median-sized transplantation program, mean OACC costs per transplantation decreased with more transplants (-$3500 [95% CI, -$4300 to -$2700] per 10 transplants; P < .001) and increased with year ($4400 [95% CI, $3500 to $5300] per year; P < .001), local price index ($1900 [95% CI, $200 to $3700] per 10-point increase; P = .03), patients listed active on the waiting list ($3100 [95% CI, $1700 to $4600] per 100 patients; P < .001), and patients on the waiting list with high comorbidities ($1500 [9% CI, $600 to $2500] per 1% increase in proportion of waitlisted patients with the highest comorbidity score; P = .002). Conclusions and Relevance: In this study, OACC costs increased at 4% per year from 2012 to 2017 and were not solely attributable to the cost of organ procurement. Expanding the waiting list will likely contribute to further increases in the mean OACC costs per transplantation and substantially increase Medicare liability.


Assuntos
Falência Renal Crônica , Transplante de Rim , Obtenção de Tecidos e Órgãos , Idoso , Feminino , Humanos , Falência Renal Crônica/epidemiologia , Falência Renal Crônica/cirurgia , Masculino , Medicare , Estados Unidos , Listas de Espera
11.
J Gen Intern Med ; 37(13): 3380-3387, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35137296

RESUMO

BACKGROUND: In the USA, chronic kidney disease (CKD) affects 1 in 7 adults and costs $100 billion annually. The DAPA-CKD trial found dapagliflozin, a sodium glucose co-transporter 2 (SGLT2) inhibitor, to be effective in reducing CKD progression and mortality in patients with diabetic and non-diabetic CKD. Currently, SGLT2 inhibitors are not considered standard of care for patients with non-diabetic CKD. OBJECTIVE: Determine the cost-effectiveness of adding dapagliflozin to standard management of patients with non-diabetic CKD. DESIGN: Markov model with lifetime time horizon and US healthcare sector perspective. PATIENTS: Patients with non-diabetic CKD INTERVENTION: Dapagliflozin plus standard care versus standard care only. MAIN MEASURES: Quality-adjusted life years (QALYs), costs, and incremental cost-effectiveness ratios (ICERs), all discounted at 3% annually; total incidence of kidney failure on kidney replacement therapy; average years on kidney replacement therapy. KEY RESULTS: Adding dapagliflozin to standard care improved life expectancy by 2 years, increased discounted QALYS (from 6.75 to 8.06), and reduced the total incidence of kidney failure on kidney replacement therapy (KRT) (from 17.4 to 11.0%) and average years on KRT (from 0.77 to 0.43) over the lifetime of the cohort. Dapagliflozin plus standard care was more effective than standard care alone while increasing lifetime costs (from $245,900 to $324,8900, or $60,000 per QALY gained). Results were robust to variations in assumptions about dapagliflozin's efficacy over time and by CKD stage, added costs of kidney replacement therapy, and expected population annual CKD progression rates and sensitive to the cost of dapagliflozin. The net 1-year budgetary implication of treating all US patients with non-diabetic CKD could be up to $21 billion. CONCLUSIONS: Dapagliflozin improved life expectancy and reduced progression of CKD, the proportion of patients requiring kidney replacement therapy, and time on kidney replacement therapy in patients with non-diabetic CKD. Use of dapagliflozin meets conventional criteria for cost-effectiveness.


Assuntos
Diabetes Mellitus Tipo 2 , Insuficiência Renal Crônica , Inibidores do Transportador 2 de Sódio-Glicose , Adulto , Compostos Benzidrílicos , Análise Custo-Benefício , Diabetes Mellitus Tipo 2/tratamento farmacológico , Glucose , Glucosídeos , Humanos , Anos de Vida Ajustados por Qualidade de Vida , Insuficiência Renal Crônica/tratamento farmacológico , Insuficiência Renal Crônica/epidemiologia , Sódio , Transportador 2 de Glucose-Sódio , Inibidores do Transportador 2 de Sódio-Glicose/uso terapêutico
12.
Value Health ; 24(11): 1592-1602, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34711359

RESUMO

OBJECTIVES: Policy makers have suggested increasing peritoneal dialysis (PD) would improve end-stage kidney disease (ESKD) outcomes and reduce Medicare spending compared with hemodialysis (HD). We compared mortality, hospitalizations, and Medicare spending between PD and HD among uninsured adults with incident ESKD. METHODS: Using an instrumental variable design, we exploited a natural experiment encouraging PD among the uninsured. Uninsured patients usually receive Medicare at dialysis month 4. For those initiating PD, Medicare covers the first 3 dialysis months, including predialysis services in the calendar month when dialysis started. Starting dialysis later in a calendar month increases predialysis coverage that is essential for PD catheter placements. The policy encourages PD incrementally when ESKD develops later in the month. Dialysis start day appears to be unrelated to patient characteristics and effectively "randomizes patients" to dialysis modality, mitigating selection bias. RESULTS: Starting dialysis later in the month was associated with an increased PD uptake: every week later in the month was associated with an absolute increase of 0.8% (95% confidence interval [CI] 0.6%-0.9%) at dialysis day 1 and 0.5% (95% CI 0.3%-0.7%) at dialysis month 12. We observed no significant absolute difference between PD and HD for 12-month mortality (-0.9%, 95% CI -3.3% to 0.8%), hospitalizations during months 7 to 12 (-0.05, 95% CI -0.20 to 0.07), and Medicare spending during months 7 to 12 (-$702, 95% CI -$4004 to $2909). CONCLUSIONS: In an instrumental variable analysis, PD did not result in improved outcomes or lower costs than HD.


Assuntos
Custos e Análise de Custo , Avaliação de Resultados em Cuidados de Saúde , Diálise Peritoneal/economia , Diálise Renal/economia , Adolescente , Adulto , Idoso , Feminino , Humanos , Falência Renal Crônica/mortalidade , Falência Renal Crônica/terapia , Masculino , Pessoa de Meia-Idade , Formulação de Políticas , Estados Unidos/epidemiologia , Adulto Jovem
13.
Clin J Am Soc Nephrol ; 16(7): 1052-1060, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-34597265

RESUMO

BACKGROUND AND OBJECTIVES: New payment models resulting from the Advancing American Kidney Health initiative may create incentives for nephrologists to focus less on face-to-face in-center hemodialysis visits. This study aimed to understand whether more frequent nephrology practitioner dialysis visits improved patient experience and could help inform future policy. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: In a cross-sectional study of patients receiving dialysis from April 1, 2015 through January 31, 2016, we linked patient records from a national kidney failure registry to patient experience data from the In-Center Hemodialysis Consumer Assessment of Healthcare Providers and Systems survey. We used a multivariable mixed effects linear regression model to examine the association between nephrology practitioner visit frequency and patient-reported experiences with nephrologist care. RESULTS: Among 5125 US dialysis facilities, 2981 (58%) had ≥30 In-Center Hemodialysis Consumer Assessment of Healthcare Providers and Systems surveys completed between April 2015 and January 2016, and 243,324 patients receiving care within these facilities had Medicare Parts A/B coverage. Face-to-face practitioner visits per month were 71% with four or more visits, 17% with two to three visits, 4% with one visit, and 8% with no visits. Each 10% absolute greater proportion of patients seen by their nephrology practitioner(s) four or more times per month was associated with a modestly but statistically significant lower score of patient experience with nephrologist care by -0.3 points (95% confidence interval, -0.5 to -0.1) and no effect on experience with other domains of dialysis care. CONCLUSIONS: In an analysis of patient experiences at the dialysis facility level, frequent nephrology practitioner visits to facilities where patients undergo outpatient hemodialysis were not associated with better patient experiences.


Assuntos
Assistência Ambulatorial/estatística & dados numéricos , Nefrologistas/estatística & dados numéricos , Satisfação do Paciente , Padrões de Prática Médica/estatística & dados numéricos , Diálise Renal/estatística & dados numéricos , Idoso , Assistência Ambulatorial/economia , Instituições de Assistência Ambulatorial , Estudos Transversais , Feminino , Humanos , Falência Renal Crônica/terapia , Masculino , Medicare , Pessoa de Meia-Idade , Medidas de Resultados Relatados pelo Paciente , Mecanismo de Reembolso , Diálise Renal/economia , Estados Unidos
14.
Am J Transplant ; 21(11): 3694-3703, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-33884757

RESUMO

A potential solution to the deceased donor organ shortage is to expand donor acceptability criteria. The procurement cost implications of using nonstandard donors is unknown. Using 5 years of US organ procurement organization (OPO) data, we built a cost function model to make cost projections: the total cost was the dependent variable; production outputs, including the number of donors and organs procured, were the independent variables. In the model, procuring one kidney or procuring both kidneys from double/en bloc transplantation from a single-organ donor resulted in a marginal cost of $55 k (95% confidence interval [CI] $28 k, $99 k) per kidney, and procuring only the liver from a single-organ donor results in a marginal cost of $41 k (95% CI $12 k, $69 k) per liver. Procuring two kidneys for two candidates from a donor lowered the marginal cost to $36 k (95% CI $22 k, $66 k) per kidney, and procuring two kidneys and a liver lowers the marginal cost to $24 k (95% CI $17 k, $45 k) per organ. Economies of scale were observed, where high OPO volume was correlated with lower costs. Despite higher cost per organ than for standard donors, kidney transplantation from nonstandard donors remained cost-effective based on contemporary US data.


Assuntos
Transplante de Rim , Obtenção de Tecidos e Órgãos , Análise Custo-Benefício , Humanos , Rim , Doadores de Tecidos
15.
Chest ; 159(5): 1867-1874, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33333057

RESUMO

BACKGROUND: A better understanding of the clinical features associated with prolonged hospitalization in acute respiratory failure may allow for better-informed care planning. RESEARCH QUESTION: What are the incidence, mortality, cost, and clinical determinants of prolonged hospitalization among patients with acute respiratory failure (ARF)? STUDY DESIGN AND METHODS: Using the National Inpatient Sample data from 2004 to 2014, we identified adults 18 years and older with International Classification of Diseases, 9th edition (ICD-9) codes for ARF requiring mechanical ventilation for at least 2 days (ICD-9 518.81 or 518.82, 96.7 or 96.04, and 96.05). Outcomes studied included incidence, in-hospital mortality, cost of hospitalization, and associated patient-level and hospital-level characteristics. Trends were assessed by logistic regression, linear regression, and general linear modeling with Poisson distribution. RESULTS: Of the 5,539,567 patients with ARF, 77,665 (1.4%) had a prolonged length of stay (pLOS), defined as ≥ 60 days. Among those with pLOS, 52,776 (68%) survived to discharge. Over the study period, the incidence of pLOS decreased by 48%, in-patient mortality decreased by 18%, per-patient cost of care rose, but the percentage of the total cost of ARF care consumed by patients with pLOS did not significantly decrease (P = .06). Prolonged LOS was more likely to occur in urban teaching hospitals (OR, 6.8; 95% CI, 4.6-10.2; P < .001), hospitals located in the northeastern United States (OR, 3.6; 95% CI, 3.0-4.3; P < .001), and among patients with Medicaid insurance coverage (OR, 2.1; 95% CI, 1.9-2.4; P < .001). INTERPRETATION: From 2004 to 2014, incidence and mortality decreased among patients with ARF and pLOS, and although per-patient costs rose, the percentage of total cost of care remained stable. There is substantial variation in length of stay for patients with ARF by US region, hospital teaching status, and patient insurance coverage.


Assuntos
Tempo de Internação/economia , Respiração Artificial/economia , Síndrome do Desconforto Respiratório/economia , Síndrome do Desconforto Respiratório/terapia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Custos Hospitalares , Mortalidade Hospitalar , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Síndrome do Desconforto Respiratório/mortalidade , Estudos Retrospectivos , Estados Unidos
16.
Med Care ; 58(7): 632-642, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32520837

RESUMO

BACKGROUND: Uninsured patients with end-stage renal disease face barriers to peritoneal dialysis (PD), a type of home dialysis that is associated with improved quality of life and reduced Medicare costs. Although uninsured patients using PD at dialysis start receive retroactive Medicare coverage for required predialysis services, coverage only applies for the calendar month of dialysis start. Thus, initiating dialysis later in the month yields longer retroactive coverage. OBJECTIVES: To examine whether differences in retroactive Medicare were associated with decreased long-term PD use. RESEARCH DESIGN: We exploited the dialysis start date using a regression discontinuity design on a national cohort from the US Renal Data System. SUBJECTS: 36,256 uninsured adults starting dialysis between January 1, 2006 and December 31, 2014. MEASURES: PD use at dialysis days 1, 90, 180, and 360. RESULTS: Starting dialysis on the first versus last day of the calendar month was associated with an absolute decrease in PD use of 2.7% [95% confidence interval (CI), 1.5%-3.9%], or a relative decrease of 20% (95% CI, 12%-27%) at dialysis day 360. The absolute decrease was 5.5% (95% CI, 3.5%-7.2%) after Medicare established provider incentives for PD in 2011 and 7.2% (95% CI, 2.5%-11.9%) after Medicaid expansion in 2014. Patients were unlikely to switch from hemodialysis to PD after the first month of dialysis (probability of 6.9% in month 1, 1.5% in month 2, and 0.9% in month 4). CONCLUSIONS: Extending retroactive coverage for preparatory dialysis services could increase PD use and reduce overall Medicare spending in the uninsured.


Assuntos
Hemodiálise no Domicílio/normas , Cobertura do Seguro/normas , Fatores de Tempo , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Hemodiálise no Domicílio/economia , Hemodiálise no Domicílio/estatística & dados numéricos , Humanos , Cobertura do Seguro/economia , Cobertura do Seguro/estatística & dados numéricos , Masculino , Medicare/economia , Medicare/estatística & dados numéricos , Pessoa de Meia-Idade , Estados Unidos
17.
J Am Soc Nephrol ; 31(2): 424-433, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31857351

RESUMO

BACKGROUND: Although most American patients with ESKD become eligible for Medicare by their fourth month of dialysis, some never do. Information about where patients with limited health insurance receive maintenance dialysis has been lacking. METHODS: We identified patients initiating maintenance dialysis (2008-2015) from the US Renal Data System, defining patients as "safety-net reliant" if they were uninsured or had only Medicaid coverage at dialysis onset and had not qualified for Medicare by the fourth dialysis month. We examined four dialysis facility ownership categories according to for-profit/nonprofit status and ownership (chain versus independent). We assessed whether patients who were safety-net reliant were more likely to initiate dialysis at certain facility types. We also examined hospital-based affiliation. RESULTS: The proportion of patients <65 years initiating dialysis who were safety-net reliant increased significantly over time, from 11% to 14%; 73% of such patients started dialysis at for-profit/chain-owned facilities compared to 76% of all patients starting dialysis. Patients who were safety-net reliant had a 30% higher relative risk of initiating dialysis at nonprofit/independently owned versus for-profit/independently owned facilities (odds ratio, 1.30; 95% CI, 1.24 to 1.36); they had slightly lower relative risks of initiating dialysis at for-profit and non-profit chain-owned facilities, and were more likely to receive dialysis at hospital-based facilities. These findings primarily reflect increased likelihood of dialysis among patients without insurance at certain facility types. CONCLUSIONS: Although most patients who were safety-net reliant received care at for-profit/chain-owned facilities, they were disproportionately cared for at nonprofit/independently owned and hospital-based facilities. Ongoing loss of market share of nonprofit/independently owned outpatient dialysis facilities may affect safety net-reliant populations.


Assuntos
Diálise Renal/economia , Provedores de Redes de Segurança , Adulto , Idoso , Feminino , Instituições Privadas de Saúde , Hospitais , Humanos , Masculino , Medicaid , Pessoas sem Cobertura de Seguro de Saúde , Medicare , Pessoa de Meia-Idade , Estados Unidos
18.
J Urol ; 203(5): 957-961, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31738114

RESUMO

PURPOSE: Urinary stone disease during pregnancy is poorly understood but is thought to be associated with increased maternal and fetal morbidity. We determined the prevalence of urinary stone disease in pregnancy and whether it is associated with adverse pregnancy outcomes. MATERIALS AND METHODS: We identified all pregnant women from 2003 through 2017 in the Optum® national insurance claims database. We used diagnosis claims to identify urinary stone disease and assess medical comorbidity. We established the prevalence of urinary stone disease during pregnancy stratified by week of pregnancy. We further evaluated associations among urinary stone disease, maternal complications and pregnancy outcomes in univariable and multivariable analyses. RESULTS: Urinary stone disease affects 8 per 1,000 pregnancies and is more common in white women and women with more comorbid conditions. In fully adjusted models pregnancies complicated by urinary stone disease had higher rates of adverse fetal outcomes including prematurity and spontaneous abortions. This analysis is limited by its retrospective, administrative claims design. CONCLUSIONS: The rate of urinary stone disease during pregnancy is higher than previously reported. Urinary stone disease is associated with adverse pregnancy outcomes.


Assuntos
Revisão da Utilização de Seguros/estatística & dados numéricos , Complicações na Gravidez/epidemiologia , Cálculos Urinários/epidemiologia , Adulto , Feminino , Idade Gestacional , Humanos , Recém-Nascido , Gravidez , Resultado da Gravidez , Prevalência , Prognóstico , Estudos Retrospectivos , Estados Unidos/epidemiologia
19.
J Am Soc Nephrol ; 30(12): 2464-2472, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31727849

RESUMO

BACKGROUND: Despite growth in value-based payment, attributes of nephrology care associated with payer-defined value remains unexplored. METHODS: Using national health insurance claims data from private preferred provider organization plans, we ranked nephrology practices using total cost of care and a composite of common quality metrics. Blinded to practice rankings, we conducted site visits at four highly ranked and three average ranked practices to identify care attributes more frequently present in highly ranked practices. A panel of nephrologists used a modified Delphi method to score each distinguishing attribute on its potential to affect quality and cost of care and ease of transfer to other nephrology practices. RESULTS: Compared with average-value peers, high-value practices were located in areas with a relatively higher proportion of black and Hispanic patients and a lower proportion of patients aged >65 years. Mean risk-adjusted per capita monthly total spending was 24% lower for high-value practices. Twelve attributes comprising five general themes were observed more frequently in high-value nephrology practices: preventing near-term costly health crises, supporting patient self-care, maximizing effectiveness of office visits, selecting cost-effective diagnostic and treatment options, and developing infrastructure to support high-value care. The Delphi panel rated four attributes highly on effect and transferability: rapidly adjustable office visit frequency for unstable patients, close monitoring and management to preserve kidney function, early planning for vascular access, and education to support self-management at every contact. CONCLUSIONS: Findings from this small-scale exploratory study may serve as a starting point for nephrologists seeking to improve on payer-specified value measures.


Assuntos
Nefrologistas , Seguro de Saúde Baseado em Valor , Redução de Custos , Atenção à Saúde/economia , Técnica Delphi , Custos de Cuidados de Saúde , Humanos , Nefrologistas/economia , Visita a Consultório Médico , Educação de Pacientes como Assunto , Pacientes/psicologia , Organizações de Prestadores Preferenciais/economia , Organizações de Prestadores Preferenciais/estatística & dados numéricos , Prática Profissional , Melhoria de Qualidade , Autogestão , Estados Unidos , Dispositivos de Acesso Vascular
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