Analytic code, statistical analysis plan, and de-identified aggregate tables for a single-surgeon Versius versus da Vinci robot-assisted radical prostatectomy cohort study

Analytic R code, the frozen statistical analysis plan, the column data dictionary, the STROBE reporting checklist, the software environment manifest, and de-identified aggregate result tables underlying a retrospective single-surgeon cohort study comparing positive surgical margin (PSM) control between the Versius and da Vinci platforms in robot-assisted radical prostatectomy (704 consecutive cases, Poland, 2021-2026; external contextual calibration against a Brigham and Women's Hospital da Vinci multiport benchmark). The primary analysis is an era-clean, overlap-weighted propensity-score model estimating the average treatment effect in the overlap population on the absolute risk-difference scale. No individual patient-level data are included; the analytic master is held under controlled access subject to institutional approvals (Medical University of Lodz Bioethics Committee RNN/99/26/KE; Mass General Brigham IRB 2021P002957), data-use agreements, the Polish Personal Data Protection Act, and the EU General Data Protection Regulation. The aggregate tables and code are shared for transparency and reproducibility.