biostudies-literatureUnknown137(3)John JB<h4>Objectives</h4>To investigate the associations between how reusable flexible cystoscopes (FCs) are managed during their functioning lifetime and their longevity.<h4>Patients and methods</h4>This was an exploratory retrospective analysis of administrative data collected by a medical supplies company (KARL STORZ Endoscopy (UK) Ltd) on FC usage linked at a National Health Service (NHS) hospital trust level to data from NHS England's Hospital Episodes Statistics dataset on the number of FCs performed each year in the NHS in England. Number of uses before failure (defined as user-determined need for FC return to the supplier) were analysed descriptively and using a negative binomial regression model.<h4>Results</h4>Data were available for 1918 FCs across 70 hospitals. The median (interquartBJU international509-518https://www.ebi.ac.uk/biostudies/studies/S-EPMC12907773biostudies-literatureFactors associated with flexible cystoscope longevity: an analysis of supplier and health service datasets.PMC12907773Gray WKBriggs TWRMcGrath JSFeasey RDasgupta RJohn JBfalseFactors associated with flexible cystoscope longevity: an analysis of supplier and health service datasets.<h4>Objectives</h4>To investigate the associations between how reusable flexible cystoscopes (FCs) are managed during their functioning lifetime and their longevity.<h4>Patients and methods</h4>This was an exploratory retrospective analysis of administrative data collected by a medical supplies company (KARL STORZ Endoscopy (UK) Ltd) on FC usage linked at a National Health Service (NHS) hospital trust level to data from NHS England's Hospital Episodes Statistics dataset on the number of FCs performed each year in the NHS in England. Number of uses before failure (defined as user-determined need for FC return to the supplier) were analysed descriptively and using a negative binomial regression model.<h4>Results</h4>Data were available for 1918 FCs across 70 hospitals. The median (interquart2026-01-01T00:00:00Z2026 Mar2026-07-15T15:41:42.633Z2026-07-06T03:11:44.391ZS-EPMC129077734143639110.1111/bju.70133