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Ckd statistical methods

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https://www.readbyqxmd.com/read/28774438/individualized-drug-dosing-using-rbf-galerkin-method-case-of-anemia-management-in-chronic-kidney-disease
#1
Hossein Mirinejad, Adam E Gaweda, Michael E Brier, Jacek M Zurada, Tamer Inanc
BACKGROUND AND OBJECTIVE: Anemia is a common comorbidity in patients with chronic kidney disease (CKD) and is frequently associated with decreased physical component of quality of life, as well as adverse cardiovascular events. Current treatment methods for renal anemia are mostly population-based approaches treating individual patients with a one-size-fits-all model. However, FDA recommendations stipulate individualized anemia treatment with precise control of the hemoglobin concentration and minimal drug utilization...
September 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28751576/analytic-considerations-for-repeated-measures-of-egfr-in-cohort-studies-of-ckd
#2
Haochang Shou, Jesse Y Hsu, Dawei Xie, Wei Yang, Jason Roy, Amanda H Anderson, J Richard Landis, Harold I Feldman, Afshin Parsa, Christopher Jepson
Repeated measures of various biomarkers provide opportunities for us to enhance understanding of many important clinical aspects of CKD, including patterns of disease progression, rates of kidney function decline under different risk factors, and the degree of heterogeneity in disease manifestations across patients. However, because of unique features, such as correlations across visits and time dependency, these data must be appropriately handled using longitudinal data analysis methods. We provide a general overview of the characteristics of data collected in cohort studies and compare appropriate statistical methods for the analysis of longitudinal exposures and outcomes...
July 27, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28748877/vitamin-d-levels-and-other-biochemical-parameters-of-mineral-bone-disorders-and-their-association-with-diastolic-dysfunction-and-left-ventricular-mass-in-young-nondiabetic-adult-patients-with-chronic-kidney-disease
#3
Satyendra Kumar Sonkar, Mohit Bhutani, Gyanendra Kumar Sonkar, Sant Kumar Pandey, Sharad Chandra, Vivek Bhosale
Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in patients with end-stage renal disease. Chronic kidney disease (CKD)-associated cardiovascular mortality is more prevalent in those with diastolic heart failure and is an early predictor, while increased left ventricular mass (LVM) is a strong independent risk factor. Hypovitaminosis D is extensively being studied as a nontraditional risk factor for CVD. The aim of the present study is to look at the association of Vitamin D and other parameters of mineral bone disorder (MBD) with diastolic dysfunction and LVM in nondiabetic young adult patients with CKD...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28741050/risk-factors-for-progression-of-chronic-kidney-disease-in-the-eppic-trials-and-the-effect-of-ast-120
#4
Gerald Schulman, Tomas Berl, Gerald J Beck, Giuseppe Remuzzi, Eberhard Ritz, Miho Shimizu, Mami Kikuchi, Yuko Shobu
BACKGROUND: Two randomized, double-blind, placebo-controlled trials (EPPIC-1 and EPPIC-2) investigated the efficacy and safety of AST-120, an oral spherical carbon adsorbent, in adults with chronic kidney disease (CKD). While the benefit of adding AST-120 to standard therapy was not supported by these trials, we performed a post hoc analysis to focus on CKD progression and to determine the risk factors for the primary endpoint in the EPPIC trial population. METHODS: In the EPPIC trials, patients were randomly assigned 1:1 to treatment with AST-120 or placebo...
July 24, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28733768/estimates-of-health-utility-scores-in-chronic-kidney-disease
#5
Nigar Sekercioglu, Bryan Curtis, Sean Murphy, Gord Blackhouse, Brendan Barrett
INTRODUCTION: Coverage decisions in publicly funded healthcare systems require a formal, systematic and transparent assessment process for policies related to distribution of resources. The process is complex and employs multiple types of information, such as clinical effectiveness, costs and health utility scores which are used to produce quality-adjusted life years. The purpose of this study was to create health utility scores for CKD patients within the Canadian population. METHODS: This is a cross-sectional study of CKD patients...
July 21, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28721320/detection-of-chronic-kidney-disease-by-using-different-equations-of-glomerular-filtration-rate-in-patients-with-type-2-diabetes-mellitus-a-cross-sectional-analysis
#6
Sojib Bin Zaman
Introduction Chronic kidney disease (CKD) is a global threat due to its high mortality. It is essential to know the actual magnitude of diabetic CKD to design a specific management program. However, there is limited knowledge regarding the most suitable equation to measure CKD in patients with Type 2 diabetes mellitus (T2DM). This paper aimed to analyze estimated glomerular filtration rate (eGFR) based on different equations to detect the CKD among T2DM.  Methods A hospital-based cross-sectional study was carried out, and a clinical registry was used to collect 4,042 T2DM patients from a large district hospital in Northeast Thailand...
June 14, 2017: Curēus
https://www.readbyqxmd.com/read/28716856/statistical-methods-for-recurrent-event-analysis-in-cohort-studies-of-ckd
#7
Wei Yang, Christopher Jepson, Dawei Xie, Jason A Roy, Haochang Shou, Jesse Yenchih Hsu, Amanda Hyre Anderson, J Richard Landis, Jiang He, Harold I Feldman
Cardiovascular events, such as hospitalizations because of congestive heart failure, often occur repeatedly in patients with CKD. Many studies focus on analyses of the first occurrence of these events, and discard subsequent information. In this article, we review a number of statistical methods for analyzing ordered recurrent events of the same type, including Poisson regression and three commonly used survival models that are extensions of Cox proportional hazards regression. We illustrate the models by analyzing data from the Chronic Renal Insufficiency Cohort Study to identify risk factors for congestive heart failure hospitalizations in patients with CKD...
July 17, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28702365/abnormal-amyloid-%C3%AE-42-expression-and-increased-oxidative-stress-in-plasma-of-ckd-patients-with-cognitive-dysfunction-a-small-scale-case-control-study-comparison-with-alzheimer-s-disease
#8
G Vinothkumar, C Kedharnath, S Krishnakumar, S Sreedhar, K Preethikrishnan, S Dinesh, A Sundaram, D Balakrishnan, G Shivashekar, Sureshkumar, P Venkataraman
BACKGROUND: Cognitive dysfunction has been increasingly recognized in chronic kidney disease (CKD) patients. Senile plaques are important pathophysiological characteristic of cognitive dysfunction. The major component of plaques is the amyloid β (Aβ) peptide released from proteolytic cleavage of amyloid precursor protein (APP). Plasma Aβ has been a focus of the growing literature on blood based biomarkers for cognitive dysfunction. Oxidative stress is prevalent in CKD and it plays an important role in cognitive dysfunction...
December 2017: BBA Clinical
https://www.readbyqxmd.com/read/28689198/influence-of-the-method-of-definition-on-the-prevalence-of-left-ventricular-hypertrophy-in-children-with-chronic-kidney-disease-data-from-the-know-ped-ckd-study
#9
Heeyeon Cho, Hyun Jin Choi, Hee Gyung Kang, Il-Soo Ha, Hae Il Cheong, Kyung Hee Han, Seong Heon Kim, Min Hyun Cho, Jae Il Shin, Joo Hoon Lee, Young Seo Park
BACKGROUND/AIMS: Children with chronic kidney disease (CKD) have a high risk of cardiovascular disease. Left-ventricular (LV) hypertrophy (LVH) is an early marker of cardiovascular disease in pediatric CKD, and the prevalence of LVH in pediatric CKD is approximately 20-30% in pre-dialysis CKD patients. However, there is no consensus on the ideal method of defining LVH in pediatric CKD patients. Previous studies have typically used the LV mass index (LVMI), which is calculated as LV mass in grams divided by height in meters to the 2...
July 7, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28686534/new-model-for-estimating-glomerular-filtration-rate-in-patients-with-cancer
#10
Tobias Janowitz, Edward H Williams, Andrea Marshall, Nicola Ainsworth, Peter B Thomas, Stephen J Sammut, Scott Shepherd, Jeff White, Patrick B Mark, Andy G Lynch, Duncan I Jodrell, Simon Tavaré, Helena Earl
Purpose The glomerular filtration rate (GFR) is essential for carboplatin chemotherapy dosing; however, the best method to estimate GFR in patients with cancer is unknown. We identify the most accurate and least biased method. Methods We obtained data on age, sex, height, weight, serum creatinine concentrations, and results for GFR from chromium-51 ((51)Cr) EDTA excretion measurements ((51)Cr-EDTA GFR) from white patients ≥ 18 years of age with histologically confirmed cancer diagnoses at the Cambridge University Hospital NHS Trust, United Kingdom...
August 20, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28683079/validation-of-glomerular-filtration-rate-estimating-equations-in-chinese-children
#11
Ke Zheng, Mengchun Gong, Yan Qin, Hongmei Song, Ximin Shi, Yuan Wu, Fang Li, Xuemei Li
BACKGROUND: Glomerular filtration rate (GFR) is essential for renal function evaluation and classification of chronic kidney disease (CKD), while the reference method in children are cumbersome. In the Chinese children, there was no data about GFR measured through plasma or renal clearance of the exogenous markers, and therefore no validated GFR-estimating tools in this population. METHODS: We measured GFR with double-sample plasma clearance of 99mTc-DTPA (mGFR) in 87 hospitalized children with renal injury...
2017: PloS One
https://www.readbyqxmd.com/read/28658750/retrospective-comparison-of-estimated-gfr-using-2006-mdrd-2009-ckd-epi-and-cockcroft-gault-with-24-hour-urine-creatinine-clearance
#12
B Vinodh Kumar, Thuthi Mohan
INTRODUCTION: The assessment of Glomerular Filtration Rate (GFR) is essential for clinical practice in assessing kidney function, drug dosing, detecting and estimating the prognosis of Chronic Kidney Disease (CKD). The most common practical method for assessing GFR is performed with a 24 hour/timed urine collection for creatinine clearance evaluation. The estimation of eGFR by creatinine based formulae is known to be a rapid and reliable means of approximation of creatinine clearance...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28623542/identification-of-differentially-expressed-mirnas-associated-with-chronic-kidney-disease-mineral-bone-disorder
#13
Kyung Im Kim, Sohyun Jeong, Nayoung Han, Jung Mi Oh, Kook-Hwan Oh, In-Wha Kim
The purpose of this study is to characterize a meta-signature of differentially expressed mRNA in chronic kidney disease (CKD) to predict putative microRNA (miRNA) in CKD-mineral bone disorder (CKD-MBD) and confirm the changes in these genes and miRNA expression under uremic conditions by using a cell culture system. PubMed searches using MeSH terms and keywords related to CKD, uremia, and mRNA arrays were conducted. Through a computational analysis, a meta-signature that characterizes the significant intersection of differentially expressed mRNA and expected miRNAs associated with CKD-MBD was determined...
June 14, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/28603903/a-systematic-review-of-sodium-thiosulfate-in-treating-calciphylaxis-in-chronic-kidney-disease-patients
#14
Ting Peng, Ling Zhuo, Ying Wang, Min Jun, Guisen Li, Li Wang, Daqing Hong
BACKGROUND: Calciphylaxis is a severe complication of advanced chronic kidney disease (CKD). Sodium thiosulphate (STS), an antioxidant and calcium chelating agent, has been used for the treatment of calciphylaxis. However, its efficacy and safety have not been systematically analysed and evaluated. METHODS: MEDLINE, EMBASE, and the Cochrane Library database were systematically searched for case report or cases series on use of STS for calciphylaxis published between July 1974 and October 2016...
June 11, 2017: Nephrology
https://www.readbyqxmd.com/read/28599401/the-frequency-of-bone-fractures-among-patients-with-chronic-kidney-disease-not-on-dialysis-two-year-follow-up
#15
Andreja Figurek, Vlastimir Vlatkovic, Dragan Vojvodic, Branislav Gasic, Milorad Grujicic
INTRODUCTION: Renal osteodystrophy is a severe complication of chronic kidney disease (CKD) that increases morbidity and mortality in these patients. Mineral and bone disorder starts early in CKD and affects the incidence of bone fractures. The aim of this study was to observe the frequency of diverse bone fractures in patients with CKD not on dialysis. METHODS: This cohort study included 68 patients, that were followed during the two-year period. The patients were divided in two cohorts: one that developed bone fractures and the other that did not...
May 22, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28575649/genetic-variation-driven-gene-expression-changes-highlight-genes-with-important-functions-for-kidney-disease
#16
Yi-An Ko, Huiguang Yi, Chengxiang Qiu, Shizheng Huang, Jihwan Park, Nora Ledo, Anna Köttgen, Hongzhe Li, Daniel J Rader, Michael A Pack, Christopher D Brown, Katalin Susztak
Chronic kidney disease (CKD) is a complex gene-environmental disease affecting close to 10% of the US population. Genome-wide association studies (GWASs) have identified sequence variants, localized to non-coding genomic regions, associated with kidney function. Despite these robust observations, the mechanism by which variants lead to CKD remains a critical unanswered question. Expression quantitative trait loci (eQTL) analysis is a method to identify genetic variation associated with gene expression changes in specific tissue types...
June 1, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28571128/association-between-serum-cystatin-c-and-creatinine-in-chronic-kidney-disease-subjects-attending-a-tertiary-health-care-centre
#17
Janice DSa, Sukanya Shetty, Roopa Rani Bhandary, Ashalatha V Rao
INTRODUCTION: Chronic Kidney Disease (CKD) is an emerging health problem due to the increasing prevalence of conditions like diabetes mellitus and hypertension. Most patients are diagnosed during the later stages of CKD when the clinical symptoms become apparent. There is a need for early diagnosis to prevent disease progression and associated morbidities. Serum Creatinine (SCr) is commonly used among clinicians to determine renal function. However, SCr is affected by several factors and cannot be entirely relied upon...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28566556/estimation-of-clinical-parameters-of-chronic-kidney-disease-ckd-by-exhaled-breath-full-scan-mass-spectrometry-data-and-iterative-pca-with-intensity-screening-ips-algorithm
#18
Maggie Haitian Wang, Steven Y F Lau, Ka Chun Chong, Chloe Kwok, Maria Lai, Hau Yin Chung, Chung Shun Ho, Cheuk Chun Szeto, Benny Zee
Breath mass spectrometry is a useful tool for identifying important compounds associated with health. However, there have been few studies that explored human exhaled breath by full-scan mass spectrometry as a non-invasive method for medical diagnosis, which may be attributed to the difficulties resulting from multicollinearity and small sample sizes relative to a large number of product ions. In this study, breath samples from 54 chronic kidney disease patients were analyzed by selected ion flow tube mass spectrometry (SIFT-MS) in the full-scan mode...
June 1, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28486670/economic-evaluation-of-a-pre-esrd-pay-for-performance-programme-in-advanced-chronic-kidney-disease-patients
#19
Hui-Min Hsieh, Ming-Yen Lin, Yi-Wen Chiu, Ping-Hsun Wu, Li-Jeng Cheng, Feng-Shiuan Jian, Chih-Cheng Hsu, Shang-Jyh Hwang
Background: The National Health Insurance Administration in Taiwan initiated a nationwide pre-end-stage renal disease (ESRD) pay-for-performance (P4P) programme at the end of 2006 to improve quality of care for chronic kidney disease (CKD) patients. This study aimed to examine this programme's effect on patients' clinical outcomes and its cost-effectiveness among advanced CKD patients. Methods: We conducted a longitudinal observational matched cohort study using two nationwide population-based datasets...
November 10, 2016: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28466665/comparison-of-skinfold-thicknesses-and-bioimpedance-spectroscopy-to-dual-energy-x-ray-absorptiometry-for-the-body-fat-measurement-in-patients-with-chronic-kidney-disease
#20
Aleksandra Rymarz, Katarzyna Szamotulska, Stanisław Niemczyk
BACKGROUND/OBJECTIVES: The aim of the study was to compare the amount of body fat measured by skinfold thickness (SFT) and bioimpedance spectroscopy (BIS) with dual-energy x-ray absorptiometry (DXA) as a reference method. METHODS: Forty-eight patients undergoing hemodialysis treatment thrice-weekly for at least 3 months (HD group) with a mean age of 59.8 ± 15.5 years, 61 patients with chronic kidney disease (CKD) with an estimated glomerular filtration rate (eGFR) <30 mL/min/1...
August 2017: Nutrition in Clinical Practice
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