Medical College of Wisconsin
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Underuse of 24-hour urine collection among children with incident urinary stones: a quality-of-care concern? Urology 2014 Aug;84(2):457-61 PMID: 24958480

Pubmed ID





OBJECTIVE: To determine the prevalence of 24-hour urine collection among first-time pediatric stone formers and investigate factors associated with its use.

MATERIALS AND METHODS: Using data from the MarketScan Commercial Claims and Encounters Database (2002-2006), children presenting to the emergency department with an incident episode of upper urinary tract stone disease were identified through a diagnosis code-based algorithm. The number of patients performing a 24-hour urine collection within 6 months of this encounter was calculated. Temporal trends in the prevalence of use were assessed. We fitted multivariate logistic regression models to examine factors associated with testing.

RESULTS: In total, 1848 children presented with an incident upper tract stone, of which 12.0% submitted a 24-hour urine collection. This percentage remained stable over the study period. Testing was more common among younger patients (P <.001) and those who visited urologists (P <.001) or nephrologists (P <.001). The odds of testing were nearly 4-fold or 7-fold higher if the patient saw a urologist (odds ratio, 3.99; 95% confidence interval, 2.83-5.62) or a nephrologist (odds ratio, 7.00; 95% confidence interval, 3.95-12.41), respectively.

CONCLUSION: Despite rates of stone recurrence, 24-hour urine collection appears to be underused among children. Efforts to increase its use are therefore likely to benefit pediatric patients with urinary stone disease.

Author List

Ellison JS, Kaufman SR, Kraft KH, Wolf JS Jr, Hollenbeck BK, Hollingsworth JM


Jonathan Scott Ellison MD Assistant Professor in the Urologic Surgery department at Medical College of Wisconsin


2-s2.0-84905092827   5 Citations

MESH terms used to index this publication - Major topics in bold

Quality of Health Care
Urinary Calculi
Urine Specimen Collection
jenkins-FCD Prod-353 9ccd8489072cb19f5b9f808bb23ed672c582f41e