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Impact of Using Risk-Based Stratification on Referral of Patients With Chronic Kidney Disease From Primary Care to Specialist Care in the United Kingdom

Bhachu, H.K., Cockwell, P., Subramanian, A., Adderley, N.J., Gokhale, K., Fenton, A., Kyte, Derek, Nirantharakumar, K. and Calvert, M. (2021) Impact of Using Risk-Based Stratification on Referral of Patients With Chronic Kidney Disease From Primary Care to Specialist Care in the United Kingdom. Kidney International Reports. ISSN 2468-0249 (In Press)

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Abstract

Introduction: The externally validated Kidney Failure Risk Equation (KFRE) for predicting risk of end-stage
renal disease (ESRD) has been developed, but its potential impact in a population on referrals for patients
with chronic kidney disease (CKD) from primary to specialty nephrology care is not known.
Methods: A cross-sectional population-based study of individuals in United Kingdom primary care
registered in The Health Improvement Network database was conducted. National Institute of Health and
Care Excellence (NICE) 2014 CKD guidelines versus the 4-variable KFRE set at a >3% risk of ESRD at 5
years were applied to patients identified with CKD stage 3-5 between January 1, 2016, and March 31, 2017.
Results: In all, 39,476 (36.6%) of 107,962 adults with CKD stage 3-5 had a urine albumin:creatinine ratio
(ACR) available and entered into the primary analysis. Of that, 7566 (19.2%) patients fulfilled NICE criteria
for referral, 2386 (31.5%) of whom had a #3% 5-year risk of ESRD. Also 8663 (21.9%) patients had a >3%
5-year risk of ESRD, 3483 (40.2%) of whom did not fulfill NICE criteria; this represents 8.8% of the primary
population. By using the KFRE threshold rather than NICE criteria for referral, 5869 patients (14.9% of the
primary analysis population) would have been reallocated between primary and specialist care. Imputa�tional analysis was used for missing ACR measurements and showed similar results.
Conclusions: A risk-based referral approach would lead to a substantial reallocation of patients between
primary care and specialist nephrology care with only a small increase in numbers eligible, ensuring those
at higher risk of progression are identified.

Item Type: Article
Additional Information:

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

A pdf file of this article is available to download from this WRaP record.

Uncontrolled Discrete Keywords: chronic kidney disease, cross-sectional study, disease progression, guidelines, kidney failure risk equation, patient referral
Divisions: College of Health, Life and Environmental Sciences > School of Allied Health and Community
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Copyright Info: Open Access article
Depositing User: Derek Kyte
Date Deposited: 07 Jul 2021 09:15
Last Modified: 12 Jul 2021 09:58
URI: https://eprints.worc.ac.uk/id/eprint/10629

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