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. 2020 Apr;125(4):586-594.
doi: 10.1111/bju.14991. Epub 2020 Jan 24.

Evaluation of the economic burden of kidney stone disease in the UK: a retrospective cohort study with a mean follow-up of 19 years

Robert M Geraghty  1 , Paul Cook  2 , Valerie Walker  2 , Bhaskar K Somani  2
Affiliations

Evaluation of the economic burden of kidney stone disease in the UK: a retrospective cohort study with a mean follow-up of 19 years

Robert M Geraghty et al. BJU Int. 2020 Apr.

Abstract

Objective: To estimate the cost of kidney stone disease (KSD) in England.

Patients and methods: We conducted a retrospective cohort study of patients with KSD, referred to a metabolic stone clinic between 1990 and 2007 using electronic records of patients with KSD in a tertiary referral centre, to determine cost using UK National Health Service (NHS) tariff, with subsequent extrapolation to the entire England population. Those with no documentation and <5 years follow-up were excluded. The outcome measure was calculation of cost (as per 2018 NHS tariff) presented as lower and higher estimates for: per episode; total within the cohort; and estimation of initial, 5-,10- and 15-year costs for the cohort and total population in England. Linear regression was used to examine for significant predictors of per episode and total cost.

Results: A total of 781 patients were included in the study after 1000 records were screened for inclusion, with a mean follow-up of 19 years. The mean (SD) overall costs per episode were between £1277 (1724) and £2887 (2492). Total initial costs for the cohort were between £950 842 and £2 336 442, rising to between £1.43 million and £3.02 million at 15 years of follow-up. Estimated cost in 2010 in England alone was between £190 million and £324 million.

Conclusion: KSD is a costly disease, comparable to the combined cost of prostate and bladder cancer in UK.

Keywords: cost; follow-up; kidney stone; obesity; treatment; urolithiasis.

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