PD13-01 DUSTING VS BASKETING DURING URETEROSCOPIC LITHOTRIPSY–WHAT IS MORE EFFICACIOUS? INTERIM ANALYSIS FROM A MULTI-CENTRE PROSPECTIVE TRIAL FROM THE EDGE RESEARCH CONSORTIUM

INTRODUCTION AND OBJECTIVES: A variety of factors have converged to change individual physician practice. In this study, we aim to elucidate the evolving practice patterns as related to individual practice within inpatient urology over a 30 year period spanning from 1982 to 2012. METHODS: We conducted a retrospective cohort study by querying the centralized New York State data on partial nephrectomy (PN; N1⁄419,309), radical nephrectomy (RN; N1⁄489,911), radical prostatectomy (RP; N1⁄490,437), and radical cystectomy (RC; N1⁄416,490) for all physician encounters in the state of New York for the years 1982e2012 using the Statewide Planning and Research Cooperative System (SPARCS). Using ICD-9 procedure codes (PN: 55.4, RN: 55.5, RP: 60.5, RC: 57.71), we identified all encounters that involved one of the procedures. We performed descriptive analyses to determine the quantity of cases, the quantity of patients, and the distribution of the cases among operating physicians. The top 5% of physicians were defined by their caseload relative to other physicians in the respective procedure and their contribution was analyzed. RESULTS: Between 1982 and 2012, the proportion of procedures completed by the top 5% of physicians increased significantly for all procedures (PN: 14.0% in 1982 to 39.5% 2012, c (N1⁄42,054), p