Validation of the kidney failure risk equation and its impact on referral strategies for chronic kidney disease: protocol for a retrospective cohort study using national claims and laboratory data in Thailand.

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Title: Validation of the kidney failure risk equation and its impact on referral strategies for chronic kidney disease: protocol for a retrospective cohort study using national claims and laboratory data in Thailand.
Authors: Phannajit J; MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK jeerath.p@chula.ac.th.; Division of Clinical Epidemiology, Department of Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand.; Division of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.; Center of Excellence for Metabolic Bone Disease in CKD patients, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand., Narkpaichit C; National Health Security Office, Bangkok, Thailand., Angkurawaranon C; Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand., Aramrat C; Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand., Cleary F; Medical Research Council Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK., Major RW; School of Medical Sciences - Public Health and Epidemiology Division (SAPPHIRE Group), University of Leicester College of Life Sciences, Leicester, UK.; University Hospitals of Leicester NHS Trust, Leicester, England, UK.; Leicester, Leicestershire and Rutland Integrated Care Board, Leicester, UK., Pichaiwong W; Nephrology Division, Department of Medicine, Rajavithi Hospital, College of Medicine, Rangsit University, Bangkok, Thailand., Anutrakulchai S; Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand., Praditpornsilpa K; Division of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand., Turner HC; MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK., Nitsch D; Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.; Department of Non-Communicable Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK.; UK Renal Registry, UK Kidney Association, Bristol, England, UK.
Source: BMJ open [BMJ Open] 2026 May 15; Vol. 16 (5), pp. e114382. Date of Electronic Publication: 2026 May 15.
Publication Type: Journal Article; Validation Study
Journal Info: Publisher: BMJ Publishing Group Ltd Country of Publication: England NLM ID: 101552874 Publication Model: Electronic Cited Medium: Internet ISSN: 2044-6055 (Electronic) Linking ISSN: 20446055 NLM ISO Abbreviation: BMJ Open Subsets: MEDLINE
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  Data: Validation of the kidney failure risk equation and its impact on referral strategies for chronic kidney disease: protocol for a retrospective cohort study using national claims and laboratory data in Thailand.
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  Data: <searchLink fieldCode="AU" term="%22Phannajit+J%22">Phannajit J</searchLink>; MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK jeerath.p@chula.ac.th.; Division of Clinical Epidemiology, Department of Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand.; Division of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.; Center of Excellence for Metabolic Bone Disease in CKD patients, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.<br /><searchLink fieldCode="AU" term="%22Narkpaichit+C%22">Narkpaichit C</searchLink>; National Health Security Office, Bangkok, Thailand.<br /><searchLink fieldCode="AU" term="%22Angkurawaranon+C%22">Angkurawaranon C</searchLink>; Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.<br /><searchLink fieldCode="AU" term="%22Aramrat+C%22">Aramrat C</searchLink>; Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.<br /><searchLink fieldCode="AU" term="%22Cleary+F%22">Cleary F</searchLink>; Medical Research Council Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.<br /><searchLink fieldCode="AU" term="%22Major+RW%22">Major RW</searchLink>; School of Medical Sciences - Public Health and Epidemiology Division (SAPPHIRE Group), University of Leicester College of Life Sciences, Leicester, UK.; University Hospitals of Leicester NHS Trust, Leicester, England, UK.; Leicester, Leicestershire and Rutland Integrated Care Board, Leicester, UK.<br /><searchLink fieldCode="AU" term="%22Pichaiwong+W%22">Pichaiwong W</searchLink>; Nephrology Division, Department of Medicine, Rajavithi Hospital, College of Medicine, Rangsit University, Bangkok, Thailand.<br /><searchLink fieldCode="AU" term="%22Anutrakulchai+S%22">Anutrakulchai S</searchLink>; Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.<br /><searchLink fieldCode="AU" term="%22Praditpornsilpa+K%22">Praditpornsilpa K</searchLink>; Division of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.<br /><searchLink fieldCode="AU" term="%22Turner+HC%22">Turner HC</searchLink>; MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK.<br /><searchLink fieldCode="AU" term="%22Nitsch+D%22">Nitsch D</searchLink>; Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.; Department of Non-Communicable Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK.; UK Renal Registry, UK Kidney Association, Bristol, England, UK.
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  Data: <searchLink fieldCode="JN" term="%22101552874%22">BMJ open</searchLink> [BMJ Open] 2026 May 15; Vol. 16 (5), pp. e114382. <i>Date of Electronic Publication: </i>2026 May 15.
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