Derivation and validation of a clinical prediction rule for uncomplicated ureteral stone--the STONE score: retrospective and prospective observational cohort studies.

ABSTRACT:

Objective

To derive and validate an objective clinical prediction rule for the presence of uncomplicated ureteral stones in patients eligible for computed tomography (CT). We hypothesized that patients with a high probability of ureteral stones would have a low probability of acutely important alternative findings.

Design

Retrospective observational derivation cohort; prospective observational validation cohort.

Setting

Urban tertiary care emergency department and suburban freestanding community emergency department.

Participants

Adults undergoing non-contrast CT for suspected uncomplicated kidney stone. The derivation cohort comprised a random selection of patients undergoing CT between April 2005 and November 2010 (1040 patients); the validation cohort includ

SUBMITTER: Moore CL 

PROVIDER: S-EPMC3966515 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature