Enhancing Administrative Claims Data: Feasibility, Validation and Application of Linking Medicare Claims Data and National Marrow Donor Program Search Data.

PURPOSE: Administrative claims data provide real-world service utilization of acute myeloid leukemia (AML) treatment, but lacks insight into treatment delays or barriers. The National Marrow Donor Program (NMDP)/Be The Match Search (Search) data contains information on donor search, but lacks information on treatment received if allogeneic hematopoietic cell transplant (HCT) is not performed. We hypothesized that linking these two data sets would create a rich resource to define factors associated with receiving HCT that could not be evaluated with either data set alone. METHODS: A subset of 2010-2016 Medicare administrative claims data was linked with Search data. A total of 5,351 patients with AML age 65-74 years (HCT = 607, no HCT = 4,744) were identified using Medicare. These patients were then linked to 93,800 records with a donor search between 2009 and 2016. Patient date of birth, sex, disease, ZIP code, transplant center/hospital, and diagnosis date were used for matching. Exploratory analysis was conducted to identify predictors associated with receiving HCT for patients with AML who received a search. RESULTS: The data sets were successfully linked, showing high sensitivity and specificity. The final cohort included 5,085 patients with AML (HCT = 533, no HCT = 4,552). Of 97 patients who received HCT without a matched search, more than 85% received a related donor HCT. Of those not receiving HCT, 609 had a matched NMDP search and 3,943 did not have a matched NMDP search. Multivariate analysis showed time to search, age, diagnosis year, race/ethnicity, and neighborhood education status associated with receiving HCT. CONCLUSION: Methods herein demonstrate the feasibility of linking Search and Medicare data. Similar methods may be applied to answer critical questions regarding barriers to HCT, thereby identifying areas to improve access to care.

Trends in Allogeneic Hematopoietic Cell Transplantation Utilization and Estimated Unmet Need Among Medicare Beneficiaries with Acute Myelogenous Leukemia.

Allogeneic hematopoietic cell transplantation (alloHCT) is a resource-intensive procedure and the sole potentially curative treatment available for patients with acute myelogenous leukemia (AML). Although Medicare coverage may help address a major financial barrier to accessing alloHCT, there remains an unmet need for alloHCT owing to sociodemographic disparities. This study examined trends and factors associated with the utilization of alloHCT and the estimated unmet need for alloHCT among Medicare beneficiaries with AML. This retrospective cohort study included patients (age 65 to 74 years) with a diagnosis of AML identified in Medicare claims data from 2010 through 2016. To study trends in utilization, transplantation rates were calculated as the number of patients who underwent alloHCT within 180 days and 1 year of diagnosis (numerator) divided by the total number of patients with AML within each diagnosis year (denominator). A multivariable logistic regression was used to identify factors associated with the likelihood of undergoing alloHCT within 1 year of diagnosis. Two approaches were applied to estimate the unmet need for alloHCT. The first approach used claims data to identify the potential need for alloHCT among patients who achieved complete remission for at least 90 days. The second approach used established National Marrow Donor Program (NMDP) methodology, which considers estimates of risk level, response to treatment, comorbidity, and early mortality, to identify the potential and unmet need for alloHCT. The overall estimated need and unmet need from 2010 to 2015 and over different time periods were evaluated for both approaches. The alloHCT rate within 180 days of diagnosis increased from 8% in 2010 to 15.8% in 2016 (P < .001), and the 1-year alloHCT rate also increased over time, from 11.9% in 2010 to 20.0% in 2015 (P < .001). The likelihood of undergoing alloHCT within 1 year of diagnosis was associated with diagnosis year, age, race, geographic region, Elixhauser Comorbidity Index, and population-level median household income. Between 2010 and 2015, the claims data approach estimated a lower potential need for alloHCT compared with the NMDP methodology estimate (27% versus 36%); both approaches estimated that 43% to 44% of patients with a potential need for alloHCT had an unmet treatment need. Despite the differences in estimated potential need between the 2 approaches, both showed a sustained unmet need but with a downward trend over time. Our data show that utilization of alloHCT has increased over time among Medicare beneficiaries with AML. Two approaches of need analysis were conducted for validation of estimated need and unmet need for alloHCT using claim-identified remission status, given the lack of cytogenetics and molecular information in claims data. Both approaches to estimating the unmet need for alloHCT found a downward trend over time; however, there are differences in utilization of alloHCT by age, race, geographic region, comorbidity, and socioeconomic status, indicating disparities in access to alloHCT among Medicare beneficiaries with AML. This suggests the need for policy efforts, research, and continued education to improve access to alloHCT and to close the gap between the actual utilization of alloHCT and the unmet need.

Hematopoietic Cell Transplantation Outcomes among Medicaid and Privately Insured Patients with Sickle Cell Disease.

Compared with privately insured patients, recipients of Medicaid have been reported to have worse outcomes in several clinical conditions and following various surgical and medical procedures. However, the relationship between health insurance status and allogeneic hematopoietic cell transplantation (alloHCT) outcomes among patients with sickle cell disease (SCD) is not well described. We sought to compare alloHCT outcomes between patients with SCD who underwent alloHCT while enrolled on Medicaid versus those who underwent alloHCT while covered by private health insurance. We conducted a retrospective multicenter study using data reported to the Center for International Blood and Marrow Transplant Research. US patients enrolled on Medicaid or private insurance who underwent a first alloHCT for SCD between 2008 and 2018 were eligible for this study. The primary outcome was event-free survival (EFS), defined as time to death or graft failure. Secondary outcomes included overall survival (OS), graft failure, acute graft-versus-host disease (GVHD), and chronic GVHD. Univariate analysis was performed using the Kaplan-Meier method for EFS and OS. The proportion of patients with graft failure, acute GVHD, and/or chronic GVHD was calculated using the cumulative incidence estimator to accommodate competing risks (ie, death). Cox regression was used to identify factors associated with EFS, OS, graft failure, and acute and chronic GVHD. A total of 399 patients (Medicaid, n = 225; private insurance, n = 174) were included in this study. The median duration of follow-up was 34 months (range, 1.0 to 134.7 months) for the Medicaid group and 38.7 months (range, 0.3 to 139.3 months) for the private insurance group. Compared with the patients with private insurance, those on Medicaid had a significantly lower 3-year EFS (75.4% [95% confidence interval (CI), 69.4% to 81%] versus 82.2% [95% CI, 76.9% to 87.8%]; P = .0279) and a significantly higher 3-year cumulative incidence of graft failure (17.2% [95% CI, 12.5% to 22.5%] versus 10.5% [95% CI, 6.4% to 15.4%]; P = .0372). There were no significant between-group differences in 3-year OS (P = .6337) or in the cumulative incidence of acute GVHD (P = .4556) or chronic GVHD (P = .6878). Cox regression analysis after adjusting for other significant variables showed that the patients enrolled on Medicaid had a lower EFS (hazard ratio [HR], 2.36; 95% CI, 1.44 to 3.85; P = .0006) and a higher cumulative incidence of graft failure (HR, 2.57; 95% CI, 1.43 to 4.60; P = .0015), with no significant between-group differences in OS (HR, 0.99; 95% CI, 0.47 to 2.07; P = .9765), acute GVHD (HR, 0.94; 95% CI, 0.59 to 1.49; P = .7905), or cGVHD (HR, 0.98; 95% CI, 0.65 to 1.48; P = .9331). That EFS is worse in patients on Medicaid compared with privately insured individuals following alloHCT for SCD provides the rationale for research to better understand the mechanisms by which insurance status impacts alloHCT outcomes among patients with SCD.

Healthcare Costs of Treating Privately Insured Patients with Acute Myeloid Leukemia in the United States from 2004 to 2014: A Generalized Additive Modeling Approach.

OBJECTIVES: The primary objective of this study was to predict healthcare cost trajectories for patients with newly diagnosed acute myeloid leukemia (AML) receiving allogeneic hematopoietic cell transplantation (alloHCT), as a function of days since chemotherapy initiation, days relative to alloHCT, and days before death or last date of insurance eligibility (LDE). An exploratory objective examined patients with AML receiving chemotherapy only. METHODS: We used Optum's de-identified Clinformatics® Data Mart Database to construct cumulative cost trajectories from chemotherapy initiation to death or LDE (through 31 December 2014) for US patients aged 20-74 years diagnosed between 1 March 2004 and 31 December 2013 (n = 187 alloHCT; n = 253 chemotherapy only). We used generalized additive modeling (GAM) to predict expected trajectories and bootstrapped confidence intervals (CIs) at user-specified intervals conditional on dates of alloHCT and death or LDE relative to chemotherapy initiation. RESULTS: Expected costs (in 2017 values) for a hypothetical patient receiving alloHCT 60 days after chemotherapy initiation and followed for 5 years were $US572,000 (95% CI 517,000-633,000); $US119,000 (95% CI 51,000-192,000); $US102,000 (95% CI 0-285,000); $US79,000 (95% CI 0-233,000), for years 1-4, respectively, and either $US494,000 (95% CI 212,000-799,000) or $US108,000 (95% CI 0-230,000) in year 5, whether the patient died or was lost to follow-up on day 1825, respectively. CONCLUSIONS: Rates of cost accrual varied over time since chemotherapy initiation, with accelerations around the time of alloHCT and death. GAM is a potentially useful approach for imputing longitudinal costs relative to treatment initiation and one or more intercurrent, clinical, or terminal events in randomized controlled trials or registries with unrecorded costs or for dynamic decision-analytic models.

Health Care Reimbursement, Service Utilization, and Outcomes among Medicare Beneficiaries with Multiple Myeloma Receiving Autologous Hematopoietic Cell Transplantation in Inpatient and Outpatient Settings.

Autologous hematopoietic stem cell transplantation (auto-HCT) is a complex procedure that can be performed in both inpatient (IP) and outpatient (OP) care settings. We examined reimbursement, service utilization, and patient financial responsibility among Medicare beneficiaries with multiple myeloma who underwent auto-HCT in the IP and OP settings using a merged dataset of the Center for International Blood and Marrow Transplant Research observational database and Centers for Medicare & Medicaid Services Medicare administrative claims data. Selection criteria included first auto-HCT, time from diagnosis to auto-HCT <18 months, and continuous enrollment in Medicare Parts A and B for 30 days before HCT index claims and 100 days post-HCT or until death. Total reimbursement and patient responsibility were adjusted for patient and disease characteristics using a weighted generalized linear model. The final cohort comprised 1640 patients, 1445 (88%) who received IP-HCT and 195 (12%) who received OP-HCT. The adjusted total mean reimbursement was higher for IP-HCT compared with OP-HCT ($82,368 [95% CI, $77,643 to $87,381] versus $46,824 [95% CI, $43,567-$50,325]; P < .0001). Adjusted total mean patient responsibility was $4736 for IP-HCT (95% CI, $4731 to $5133) and $6944 for OP-HCT (95% CI, $6296 to $7658) (P < .0001). Within 100 days post-HCT, 107 of the 195 OP-HCT recipients (55%) had at least 1 subsequent admission, compared with 348 of the 1445 IP-HCT recipients (24%). Reimbursement, service utilization, and financial responsibility varied by HCT setting. As the number of Medicare beneficiaries who undergo auto-HCT increases, coverage policy needs to consider how location of services leads to variations in the financial burden for both hospital systems and patients.

Information Needs for Treatment Decision-making of Hematopoietic Cell Transplant Patients 65 Years or Older and Caregivers.

Hematopoietic cell transplantation (HCT) is a complex and potentially life-threatening treatment option for patients with hematologic malignant and non-malignant diseases. Advances have made HCT a potentially curative treatment option for patients 65 years of age and older (older patients), and patient education resources should be adapted to meet their needs. To better understand the information needs of older patients and their caregivers for HCT treatment decision-making, the National Marrow Donor Program® (NMDP)/Be The Match® conducted a qualitative comprehensive needs assessment. Focus groups, offered in person or by phone, were conducted with older HCT patients and primary caregivers of older HCT patients at three transplant centers in the USA that were selected based on the number of older adults treated and geographic diversity. The one-hour, semi-structured discussions were recorded and transcribed verbatim. The analysis was performed with the NVivo 10 software for identification of conceptual themes. Five telephone and six in person focus groups of patients (n = 35) and caregivers (n = 10) were conducted. Themes that emerged included the following: (1) the need for tailored resources with age-specific recovery expectations; (2) the need for the right amount of information at the right times; and (3) the benefit of peer support. Effective patient education supports learning and treatment decision-making. As HCT increasingly becomes a treatment option for older patients, tailored educational resources are needed. These focus group results can inform and guide the development of new educational resources for older adults with hematologic diseases considering and planning for HCT.

Translation of Clinical Research into Practice: An Impact Assessment of the Results from the Blood and Marrow Transplant Clinical Trials Network Protocol 0201 on Unrelated Graft Source Utilization.

Barriers and facilitators to adoption of results of clinical trials are substantial and poorly understood. We sought to examine whether the results of the randomized, multicenter Blood and Marrow Transplant Clinical Trials Network (BMT CTN) 0201 study comparing peripheral blood (PB) with bone marrow (BM) stem cells for unrelated donor (URD) hematopoietic cell transplantation (HCT) changed practice from PB to BM graft utilization and explored factors that impact graft selection and translation of research results into practice. The difference between use of URD BM and PB in the 2 years before and after publication of results in 2012 was examined using observational data collected by the Center for Blood and Marrow Transplant Research. A web-based survey of transplant physicians was conducted to understand the change in physician-reported personal and center preferred URD graft. No significant change in use of BM versus PB grafts occurred after 2012. Both BMT CTN participating and nonparticipating centers continued to use PB. Ninety-two percent of respondents were aware of the study results; 18% reported a change in personal and 16% reported a change in their center's practice of requesting BM instead of PB for URD HCT. Patient characteristics and the perception that engaging local champions to increase the evidence uptake were factors associated with personal or center change in practice. Despite awareness of the trial results, fewer than one-fifth of HCT physicians reported practice change in response to the BMT CTN 0201 results. Observational data confirmed no discernible change in practice.

Healthcare Costs and Utilization for Patients Age 50 to 64 Years with Acute Myeloid Leukemia Treated with Chemotherapy or with Chemotherapy and Allogeneic Hematopoietic Cell Transplantation.

The primary aim of this study was to describe healthcare costs and utilization during the first year after a diagnosis of acute myeloid leukemia (AML) for privately insured non-Medicare patients in the United States aged 50 to 64 years who were treated with either chemotherapy or chemotherapy and allogeneic hematopoietic cell transplantation (alloHCT). MarketScan (Truven Health Analytics) adjudicated total payments for inpatient, outpatient, and prescription drug claims from 2007 to 2011 were used to estimate costs from the health system perspective. Stabilized inverse propensity score weights were constructed using logistic regression to account for differential selection of alloHCT over chemotherapy. Weighted generalized linear models adjusted costs and utilization (hospitalizations, inpatient days, and outpatient visit-days) for differences in age, sex, diagnosis year, region, insurance plan type, Elixhauser Comorbidity Index), and 60-day prediagnosis costs. Because mortality data were not available, models could not be adjusted for survival times. Among 29,915 patients with a primary diagnosis of AML, 985 patients met inclusion criteria (774 [79%] receiving chemotherapy alone and 211 [21%] alloHCT). Adjusted mean 1-year costs were $280,788 for chemotherapy and $544,178 for alloHCT. Patients receiving chemotherapy alone had a mean of 4 hospitalizations, 52.9 inpatient days, and 52.4 outpatient visits in the year after AML diagnosis; patients receiving alloHCT had 5 hospitalizations, 92.5 inpatient days, and 74.5 outpatient visits. Treating AML in the first year after diagnosis incurs substantial healthcare costs and utilization with chemotherapy alone and with alloHCT. Our analysis informs healthcare providers, policymakers, and payers so they can better understand treatment costs and utilization for privately insured patients aged 50 to 64 with AML.

Administrative Claims Data for Economic Analyses in Hematopoietic Cell Transplantation: Challenges and Opportunities.

There is an increasing need for the development of approaches to measure quality, costs, and resource utilization patterns among allogeneic hematopoietic cell transplantation (HCT) patients. Administrative claims data provide an opportunity to examine service utilization and costs, particularly from the payer's perspective. However, because administrative claims data are primarily designed for reimbursement purposes, challenges arise when using it for research. We use a case study with data derived from the 2007 to 2011 Truven Health MarketScan Research database to discuss opportunities and challenges for the use of administrative claims data to examine the costs and service utilization of allogeneic HCT and chemotherapy alone for patients with acute myeloid leukemia (AML). Starting with a cohort of 29,915 potentially eligible patients with a diagnosis of AML, we were able to identify 211 patients treated with HCT and 774 treated with chemotherapy alone where we were sufficiently confident of the diagnosis and treatment path to allow analysis. Administrative claims data provide an avenue to meet the need for health care costs, resource utilization, and outcome information. However, when using these data, a balance between clinical knowledge and applied methods is critical to identifying a valid study cohort and accurate measures of costs and resource utilization.

Effects of Changes in Diabetes Pay-for-Performance Incentive Designs on Patient Risk Selection.

OBJECTIVE: Taiwan's National Health Insurance (NHI) Program implemented a Diabetes Pay-for-Performance Program (P4P) based on process-of-care measures in 2001. In late 2006, that P4P program was reformed to also include achievement of intermediate health outcomes. This study examined how the change in design affected patient risk selection. DESIGNS/STUDY POPULATIONS: Study populations were identified from a 2002 to 2003 period (Phase 1) and a 2007 to 2008 period (Phase 2), spanning pre- and postimplementation of reforms in the P4P incentive design. Phase 1 had 74,529 newly enrolled P4P patients and 215,572 non-P4P patients, and Phase 2 had 76,901 newly enrolled P4P patients and 299,573 non-P4P patients. Logistic regression models were used to estimate the effect of changes in design on P4P patient selection. PRINCIPAL FINDINGS: Patients with greater disease severity and comorbidity were more likely to be excluded from the P4P program in both phases. Furthermore, the additional financial incentive for patients' intermediate outcomes moderately worsened patient risk selection. CONCLUSIONS: Policy makers need to carefully monitor the care of the diabetes patients with more severe and complex disease statuses after the changes of P4P financial incentive design.

National Survey of Hematopoietic Cell Transplantation Center Personnel, Infrastructure, and Models of Care Delivery.

Hematopoietic cell transplantation (HCT) is a complex procedure that requires availability of adequate infrastructure, personnel, and resources at transplantation centers. We conducted a national survey of transplantation centers in the United States to obtain data on their personnel, infrastructure, and care delivery models. A 42-item web-based survey was administered to medical directors of transplantation centers in the United States that reported any allogeneic HCT to the Center for International Blood and Marrow Transplant Research in 2011. The response rate for the survey was 79% for adult programs (85 of 108 centers) and 82% for pediatric programs (54 of 66 centers). For describing results, we categorized centers into groups with similar volumes based on 2010 total HCT activity (adult centers, 9 categories; pediatric centers, 6 categories). We observed considerable variation in available resources, infrastructure, personnel, and care delivery models among adult and pediatric transplantation centers. Characteristics varied substantially among centers with comparable transplantation volumes. Transplantation centers may find these data helpful in assessing their present capacity and use them to evaluate potential resource needs for personnel, infrastructure, and care delivery and in planning for growth.

Cost-effectiveness of diabetes pay-for-performance incentive designs.

BACKGROUND: Taiwan's National Health Insurance (NHI) Program implemented a diabetes pay-for-performance program (P4P) based on process-of-care measures in 2001. In late 2006, that P4P program was revised to also include achievement of intermediate health outcomes. OBJECTIVES: This study examined to what extent these 2 P4P incentive designs have been cost-effective and what the difference in effect may have been. RESEARCH DESIGN AND METHOD: Analyzing data using 3 population-based longitudinal databases (NHI's P4P dataset, NHI's claims database, and Taiwan's death registry), we compared costs and effectiveness between P4P and non-P4P diabetes patient groups in each phase. Propensity score matching was used to match comparable control groups for intervention groups. Outcomes included life-years, quality-adjusted life-years (QALYs), program intervention costs, cost-savings, and incremental cost-effectiveness ratios. RESULTS: QALYs for P4P patients and non-P4P patients were 2.08 and 1.99 in phase 1 and 2.08 and 2.02 in phase 2. The average incremental intervention costs per QALYs was TWD$335,546 in phase 1 and TWD$298,606 in phase 2. The average incremental all-cause medical costs saved by the P4P program per QALYs were TWD$602,167 in phase 1 and TWD$661,163 in phase 2. The findings indicated that both P4P programs were cost-effective and the resulting return on investment was 1.8:1 in phase 1 and 2.0:1 in phase 2. CONCLUSIONS: We conclude that the diabetes P4P program in both phases enabled the long-term cost-effective use of resources and cost-savings regardless of whether a bonus for intermediate outcome improvement was added to a process-based P4P incentive design.

Estimation of standardized hospital costs from Medicare claims that reflect resource requirements for care: impact for cohort studies linked to Medicare claims.

OBJECTIVE: To compare cost estimates for hospital stays calculated using diagnosis-related group (DRG) weights to actual Medicare payments. DATA SOURCES/STUDY SETTING: Medicare MedPAR files and DRG tables linked to participant data from the Study of Osteoporotic Fractures (SOF) from 1992 through 2010. Participants were women age 65 and older recruited in three metropolitan and one rural area of the United States. STUDY DESIGN: Costs were estimated using DRG payment weights for 1,397 hospital stays for 795 SOF participants for 1 year following a hip fracture. Medicare cost estimates included Medicare and secondary insurer payments, and copay and deductible amounts. PRINCIPAL FINDINGS: The mean (SD) of inpatient DRG-based cost estimates per person-year were $16,268 ($10,058) compared with $19,937 ($15,531) for MedPAR payments. The correlation between DRG-based estimates and MedPAR payments was 0.71, and 51 percent of hospital stays were in different quintiles when costs were calculated based on DRG weights compared with MedPAR payments. CONCLUSIONS: DRG-based cost estimates of hospital stays differ significantly from Medicare payments, which are adjusted by Medicare for facility and local geographic characteristics. DRG-based cost estimates may be preferable for analyses when facility and local geographic variation could bias assessment of associations between patient characteristics and costs.

Prehemodialysis care by dietitians and first-year mortality after initiation of hemodialysis.

BACKGROUND: Since January 2002, Medicare has provided payment for medical nutrition therapy for patients with chronic kidney disease. Few patients receive dietary counseling before end-stage renal disease onset; whether such counseling is associated with improved outcomes is unknown. STUDY DESIGN: Retrospective cohort analysis. SETTING & PARTICIPANTS: Patients who initiated hemodialysis therapy on June 1, 2005, to May 31, 2007, in the United States for whom predialysis dietitian care was reported on the Centers for Medicare & Medicaid Services Medical Evidence Report. PREDICTOR: Dietitian care before end-stage renal disease onset. OUTCOME: Time to death. MEASUREMENTS: Propensity score for dietitian care calculated using logistic regression; Cox regression analysis used to compare time to death by predialysis dietitian care overall and stratified by tertiles of propensity score, adjusting for baseline characteristics. RESULTS: Most patients (88%) received no dietitian care; 9% received dietitian care for 12 months or less, and 3% received dietitian care for more than 12 months before dialysis therapy initiation (total N = 156,440). Predialysis dietitian care was associated independently with higher albumin and lower total cholesterol levels at dialysis therapy initiation. There was evidence of an independent association between predialysis dietitian care for longer than 12 months and decreased mortality during the first year on dialysis therapy for the second tertile of propensity score. Adjusted mortality HRs were 1.16 (95% CI, 0.44-3.09; P = 0.8), 0.81 (95% CI, 0.71-0.93; P = 0.002), and 0.93 (95% CI, 0.86-1.01; P = 0.1) in the first, second, and third tertiles of propensity score, respectively. LIMITATIONS: Information for dietitian care was missing for 18.6% of Medical Evidence Reports and has low sensitivity; including only incident dialysis patients precluded evaluation of an association between dietitian care and chronic kidney disease progression; the observational design allowed the possibility of residual confounding. CONCLUSIONS: Our study suggests an independent association between predialysis dietitian care for more than 12 months and lower mortality during the first year on dialysis therapy.

Chronic kidney disease care program improves quality of pre-end-stage renal disease care and reduces medical costs.

AIM: Multidisciplinary care of patients with chronic kidney disease (CKD) provides better care outcomes. This study is to evaluate the effectiveness of a CKD care program on pre-end-stage renal disease (ESRD) care. METHODS: One hundred and forty incident haemodialysis patients were classified into the CKD Care Group (n = 71) and the Nephrologist Care Group (n = 69) according to participation in the CKD care program before dialysis initiation. The 'total observation period' was divided into '6 months before dialysis' and 'at dialysis initiation'. Quality of pre-ESRD care, service utilization and medical costs were evaluated and compared between groups. RESULTS: The mean estimated glomerular filtration rates at dialysis initiation were low in both groups; but the levels of haematocrit and serum albumin of the CKD Care Group were significantly higher. The percentages of patients initiating dialysis with created vascular access, without insertion of double-lumen catheter and without hospitalization were 57.7%, 50.7% and 40.8%, respectively, in the CKD Care Group, and 37.7%, 29.0% and 18.8% in the Nephrologist Care Group (P < 0.001). Participation in the CKD care program, though with higher costs during the 6 months before dialysis ($US1428 +/- 2049 vs US$675 +/- 962/patient, P < 0.001), was significantly associated with lower medical costs at dialysis initiation ($US942 +/- 1941 vs $US2410 +/- 2481/patient, P < 0.001) and for the total period of observation ($US2674 +/- 2780 vs $US3872 +/- 3270/patient, P = 0.009). The cost-saving effect came through the early preparation of vascular access and the lack of hospitalization at dialysis initiation. CONCLUSION: CKD care programs significantly improve quality of pre-ESRD care, decrease service utilization and save medical costs.

Impact of late-stage CKD and aging on medical utilization in the elderly population: a closed-cohort study in Taiwan.

BACKGROUND: Taiwan has the highest incidence and prevalence of end-stage renal disease globally, especially in the elderly population. The elderly with chronic kidney disease (CKD) also had high mortality. However, population-based research on how the elderly with CKD utilize medical services is still unexplored. We aimed to examine the effects of CKD severity and aging on medical utilizations in the elderly population. METHODS: This retrospective closed cohort study analysed 7868 elderly residents of Kaohsiung City, who participated in the government-sponsored annual physical examination in 1997. The information of medical services and expenses were obtained from the claimed data of the National Health Insurance from 1996 to 1999. CKD was grouped into five stages according to the National Kidney Foundation Kidney Disease Outcomes Quality Initiative (NKF K-DOQI) criteria with modifications. Late-stage CKD was defined as CKD Stages 3 to 5 [estimated glomerular filtration rate (eGFR) below 60 ml/min/1.73 m(2)]. Those subjects with eGFR above 60 ml/min/1.73 m(2) were treated as the reference group. RESULTS: After adjusting all covariates, the odds ratios of hospitalization for elderly subjects with CKD stages 3a, 3b and 4/5 were 1.19 (95% CI = 1.08-1.32), 1.48 (95% CI = 1.26-1.73) and 1.68 (95% CI = 1.21-2.33) compared with the reference group, respectively (P < 0.001). The autoregressive generalized estimating equation analysis revealed that CKD stage had linear associations with medical expenditures during the study period, especially for those elderly subjects with later stage CKD. CONCLUSION: Increases in medical utilizations and expenses were demonstrated in elderly CKD subjects, especially those with late stage CKD. Early prevention of CKD is necessary to lessen the financial impact on medical health care.

Trends in patient characteristics and first-year medical costs of older incident hemodialysis patients, 1995-2005.

BACKGROUND: Characteristics of patients with chronic kidney disease who survive to end-stage renal disease may change over time, affecting subsequent outcomes and costs. We examined trends in older incident hemodialysis patient characteristics and analyzed first-year post-dialysis therapy initiation medical costs. STUDY DESIGN: Retrospective cohort study. SETTING & PARTICIPANTS: All US incident hemodialysis patients aged > or =67 years at dialysis therapy initiation from January 1, 1995, to December 31, 2005, with Medicare Part A and Part B in the prior 2 years. PREDICTOR: Year of dialysis therapy initiation. OUTCOMES: Changes in patient characteristics and first-year costs. MEASUREMENTS: Mean and median values for continuous variables and percentages of categorical variables; first-year total medical costs measured per person per year. Observed costs were adjusted using Medicare Price Indices and patient case-mix. RESULTS: Median age at dialysis therapy initiation increased from 74.9 to 77.0 years from 1995 (n = 19,044) to 2005 (n = 31,796; P < 0.001). Diabetes prevalence increased from 54.2% to 64.1% (P < 0.001). Median estimated glomerular filtration rate increased from 8.0 to 11.2 mL/min/1.73 m(2), and median hemoglobin level increased from 9.4 to 10.2 g/dL. Obesity increased from 8.9% to 22.9% (P < 0.001). First-year observed costs increased by 37.9%; however, inflation-adjusted and case-mix-inflation-adjusted costs were stable. Important adjusters for costs are inability to ambulate/transfer, baseline serum albumin level, primary end-stage renal disease cause, comorbid peripheral vascular disease, and baseline hospital days. LIMITATIONS: Population aged > or =67 years at dialysis therapy initiation and results may not generalize to the overall hemodialysis population. CONCLUSIONS: From 1995 to 2005, incident hemodialysis patients aged > or =67 years became older, sicker, and more obese with significantly increased estimated glomerular filtration rates and hemoglobin levels at dialysis therapy initiation. Increased first-year post-dialysis therapy initiation costs became stable over time after adjustment for price inflation; case-mix-inflation-adjusted costs remained constant, possibly because of mixed changes in patient characteristics.