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Research Studies is a compilation of published research articles funded by ´óÏóÊÓƵor authored by ´óÏóÊÓƵresearchers.

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201 to 213 of 213 Research Studies Displayed
Erickson KF, Mell MW, Winkelmayer WC
Provider visit frequency and vascular access interventions in hemodialysis.
This study sought to determine whether more frequent face-to-face provider (physician and advanced practitioner) visits lead to more procedures and therapeutic interventions aimed at preserving arteriovenous fistulas and grafts and improved vascular access outcomes. It found that more frequent face-to-ace provider visits were associated with more procedures and therapeutic interventions aimed at preserving vascular accesses, but not with prolonged vascular access survival.
AHRQ-funded; HS019178.
Citation: Erickson KF, Mell MW, Winkelmayer WC . Provider visit frequency and vascular access interventions in hemodialysis. Clin J Am Soc Nephrol 2015 Feb 6;10(2):269-77. doi: 10.2215/cjn.05540614..
Keywords: Care Management, Dialysis, Kidney Disease and Health, Outcomes, Ambulatory Care and Surgery
Moore CL, Daniels B, Ghita M
Accuracy of reduced-dose computed tomography for ureteral stones in emergency department patients.
The researchers compared the sensitivity and specificity of reduced-dose computed tomography (CT) for diagnosis of clinically important urologic causes of kidney stones likely to require intervention within a 90-day follow-up period. In 201 patients with a range of body mass indexes who received both regular and reduced dose scans contemporaneously, reduced-dose CT were 96% sensitive for stones requiring intervention.
AHRQ-funded; HS018322.
Citation: Moore CL, Daniels B, Ghita M . Accuracy of reduced-dose computed tomography for ureteral stones in emergency department patients. Ann Emerg Med 2015 Feb;65(2):189-98.e2. doi: 10.1016/j.annemergmed.2014.09.008..
Keywords: Emergency Medical Services (EMS), Emergency Department, Kidney Disease and Health, Imaging
Muntner P, Gutierrez OM, Zhao H
Validation study of medicare claims to identify older US adults with CKD using the Reasons for Geographic and Racial Differences in Stroke (REGARDS) Study.
The researchers compared characteristics and outcomes for individuals with chronic kidney disease (CKD) defined using laboratory measurements versus claims data from 6,982 study participants who had Medicare fee-for-service coverage. They found that CKD, whether identified using a claims-based algorithm or through estimated glomerular filtration rate or albumin-creatinine ratio measurements, is associated with increased risk for all-cause mortality and end-stage renal disease (ESRD).
AHRQ-funded; HS018517.
Citation: Muntner P, Gutierrez OM, Zhao H . Validation study of medicare claims to identify older US adults with CKD using the Reasons for Geographic and Racial Differences in Stroke (REGARDS) Study.
Am J Kidney Dis 2015 Feb;65(2):249-58. doi: 10.1053/j.ajkd.2014.07.012.
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Keywords: Kidney Disease and Health, Outcomes, Comparative Effectiveness, Kidney Disease and Health, Mortality
Banerjee T, Kim SJ, Astor B
Vascular access type, inflammatory markers, and mortality in incident hemodialysis patients: the Choices for Healthy Outcomes in Caring for End-Stage Renal Disease (CHOICE) study.
The researchers investigated the association between access type and inflammatory marker levels in 583 dialysis patients. They found that central venous catheters, compared with arteriovenous fistulas, are associated with a greater state of inflammation and the association of catheter use and mortality may be mediated by access-induced inflammation.
AHRQ-funded; HS008365
Citation: Banerjee T, Kim SJ, Astor B . Vascular access type, inflammatory markers, and mortality in incident hemodialysis patients: the Choices for Healthy Outcomes in Caring for End-Stage Renal Disease (CHOICE) study. Am J Kidney Dis. 2014 Dec;64(6):954-61. doi: 10.1053/j.ajkd.2014.07.010..
Keywords: Kidney Disease and Health, Mortality, Comparative Effectiveness
Mold JW, Aspy CB, Smith PD
Leveraging practice-based research networks to accelerate implementation and diffusion of chronic kidney disease guidelines in primary care practices: a prospective cohort study.
This study was conducted to determine whether practice-based research networks (PBRNs) could increase dissemination, implementation, and diffusion of evidence-based treatment guidelines for chronic kidney disease by leveraging early adopter practices. After the intervention, the initial four PBRNs increased the use of ACEIs/ARBs, discontinuation of NSAIDs, testing for anemia, and testing and/or treatment for vitamin D deficiency. Most were able to recruit two additional practices, which also increased their use of ACEIs/ARBs and testing and/or treatment of vitamin D deficiency. The researchers concluded that, with some assistance, early adopter practices can facilitate the diffusion of evidence-based approaches to other practices.
AHRQ-funded; HS019945.
Citation: Mold JW, Aspy CB, Smith PD . Leveraging practice-based research networks to accelerate implementation and diffusion of chronic kidney disease guidelines in primary care practices: a prospective cohort study. Implement Sci 2014 Nov 23;9:169. doi: 10.1186/s13012-014-0169-x.
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Keywords: Practice-Based Research Network (PBRN), Primary Care, Kidney Disease and Health, Chronic Conditions, Guidelines, Implementation
Scialla JJ, Liu J, Crews DC
An instrumental variable approach finds no associated harm or benefit with early dialysis initiation in the United States.
The estimated glomerular filtration rate (eGFR) at dialysis initiation has been rising. This study described geographic variation in estimated glomerular filtration rate (eGFR) at dialysis initiation and determine its association with mortality. It found no associated harm or benefit with early dialysis initiation in the United States.
AHRQ-funded; 290200500341I.
Citation: Scialla JJ, Liu J, Crews DC . An instrumental variable approach finds no associated harm or benefit with early dialysis initiation in the United States. Kidney Int 2014 Oct;86(4):798-809. doi: 10.1038/ki.2014.110..
Keywords: Kidney Disease and Health, Outcomes, Patient Safety, Registries
Zhang Y, Thamer M, Kshirsagar O
Dialysis chains and placement on the waiting list for a cadaveric kidney transplant.
The purpose of this paper is to investigate the effect of dialysis facility chain status on renal transplantation therapy. The researchers concluded that dialysis chain affiliation expands previously observed ownership-related differences in placement on the waiting list, and for-profit ownership of dialysis chain facilities appears to be a significant impediment to access to renal transplants.
AHRQ-funded; HS020243.
Citation: Zhang Y, Thamer M, Kshirsagar O . Dialysis chains and placement on the waiting list for a cadaveric kidney transplant. Transplantation 2014 Sep 15;98(5):543-51. doi: 10.1097/tp.0000000000000106.
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Keywords: Kidney Disease and Health, Transplantation, Access to Care
Petrov ME, Kim Y, Lauderdale DS
Objective sleep, a novel risk factor for alterations in kidney function: the CARDIA study.
The investigators determined the association between objectively measured sleep and 10-year changes in estimated glomerular filtration rate. They found that, in this community-based sample, shorter sleep and poorer sleep quality were related to higher kidney filtration rates over 10 years.
AHRQ-funded; HS013852.
Citation: Petrov ME, Kim Y, Lauderdale DS . Objective sleep, a novel risk factor for alterations in kidney function: the CARDIA study. Sleep Med 2014 Sep;15(9):1140-6. doi: 10.1016/j.sleep.2014.05.021.
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Keywords: Risk, Sleep Problems, Kidney Disease and Health
Davis AE, Mehrotra S, Kilambi V
The effect of the Statewide Sharing variance on geographic disparity in kidney transplantation in the United States.
This study examined the effect of Statewide Sharing on geographic allocation disparity over time between donor service areas (DSAs) within Tennessee and Florida and compared them with geographic disparity between the DSAs within a state for all states with more than one DSA (California, New York, North Carolina, Ohio, Pennsylvania, Texas, and Wisconsin). Findings suggested that changes which are untested run the risk of unintended consequences, and Statewide Sharing should be further studied and considered.
AHRQ-funded; HS021078.
Citation: Davis AE, Mehrotra S, Kilambi V . The effect of the Statewide Sharing variance on geographic disparity in kidney transplantation in the United States. Clin J Am Soc Nephrol 2014 Aug 7;9(8):1449-60. doi: 10.2215/cjn.05350513.
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Keywords: Chronic Conditions, Disparities, Kidney Disease and Health, Policy, Transplantation
Valencia V, Moghadassi M, Kriesel DR
Study of Tomography Of Nephrolithiasis Evaluation (STONE): methodology, approach and rationale.
This paper describes the rationale and methods of STONE (Study of Tomography Of Nephrolithiasis Evaluation), a pragmatic randomized comparative effectiveness trial comparing different imaging strategies for patients with suspected urolithiasis. It concluded that the detailed methodology of STONE will provide a roadmap for comparative effectiveness studies of diagnostic imaging conducted in an ED setting.
AHRQ-funded; HS019312.
Citation: Valencia V, Moghadassi M, Kriesel DR . Study of Tomography Of Nephrolithiasis Evaluation (STONE): methodology, approach and rationale. Contemp Clin Trials 2014 May;38(1):92-101. doi: 10.1016/j.cct.2014.03.006..
Keywords: Comparative Effectiveness, Imaging, Kidney Disease and Health, Research Methodologies
Scialla JJ, Kao WH, Crainceanu C
Biomarkers of vascular calcification and mortality in patients with ESRD.
This study evaluated the association between selected calcification biomarkers and long-term mortality in a large prospective cohort of dialysis patients. It found that factors such as osteoprotegerin and fetuin-A may be risk factors for all-cause and cardiovascular mortality in patients undergoing dialysis, but they do not improve risk prediction.
AHRQ-funded; HS008365
Citation: Scialla JJ, Kao WH, Crainceanu C . Biomarkers of vascular calcification and mortality in patients with ESRD. Clin J Am Soc Nephrol. 2014 Apr;9(4):745-55. doi: 10.2215/CJN.05450513..
Keywords: Kidney Disease and Health, Mortality, Chronic Conditions
Minsinger KD, Kassis HM, Block CA
Meta-analysis of the effect of automated contrast injection devices versus manual injection and contrast volume on risk of contrast-induced nephropathy.
The researchers conducted a meta-analysis examining the currently published evidence on the reduction of contrast volume and the possible reduction of contrast-induced nephropathy (CIN) with the use of automated contrast injectors (ACIs) versus manual injection. They found that the incidence of contrast-induced nephropathy was significantly reduced by 15% for those using ACIs compared with manual injection.
AHRQ-funded; HS018443.
Citation: Minsinger KD, Kassis HM, Block CA . Meta-analysis of the effect of automated contrast injection devices versus manual injection and contrast volume on risk of contrast-induced nephropathy. Am J Cardiol 2014 Jan;113(1):49-53. doi: 10.1016/j.amjcard.2013.08.040..
Keywords: Heart Disease and Health, Kidney Disease and Health, Risk
Beaubrun AC, Kanda E, Bond TC
Form CMS-2728 data versus erythropoietin claims data: implications for quality of care studies.
The purpose of this study was to compare predialysis erythropoietin-simulating agents (ESA) care reported on Form CMS-2728 with Medicare claims for ESA treatment submitted for patients 67 years and older at initiation of dialysis with Medicare as the primary payer. It found that the agreement between Form CMS-2728 and claims data is poor and discordant results are observed when comparing the use of these data sources to predict health outcomes.
AHRQ-funded; HS000032.
Citation: Beaubrun AC, Kanda E, Bond TC . Form CMS-2728 data versus erythropoietin claims data: implications for quality of care studies. Ren Fail 2013;35(3):320-6. doi: 10.3109/0886022x.2012.747967..
Keywords: Medicare, Data, Elderly, Quality of Care, Kidney Disease and Health

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