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

Journal Club Summary Methodology Score: 2.5/5                 Usefulness Score:  2/5   Moore CL, Bomann S, Daniels B, Luty S, Molinaro A, Singh D, Gross CP. BMJ. 2014 Mar 26;348:g2191. Full Article      This study derived and validated an objective clinical prediction...