Comparisons of perioperative outcomes and costs between open and laparoscopic radical prostatectomy: A propensity‐score matching analysis based on the J apanese D iagnosis P rocedure C ombination database

We compared perioperative outcomes and costs between open and laparoscopic radical prostatectomy for prostate cancer. The J apanese D iagnosis P rocedure C ombination database, including cases from 2007 to 2010, was used by one‐to‐one propensity‐score matching. The following items were compared: complication rate; homologous and autologous transfusion rate; first cystography day and cystography repeat rate; anesthesia time; postoperative length of stay; and costs. Multivariate analyses were carried out by including age, C harlson C omorbidity I ndex, T stage, hospital volume and hospital academic status as variables. As a result, among 15 616 open and 1997 laparoscopic radical prostatectomies, 1627 propensity‐score matched pairs were generated. The laparoscopic approach showed a better overall complication rate (3.4% vs 5.0%), homologous transfusion rate (3.3% vs 9.2%), autologous transfusion rate (44.9% vs 79.3%), first cystography day (mean 6th vs 7th day), mean postoperative length of stay (mean 11 vs 13 days), and cost without surgery and anesthesia (mean $7965 vs $9235; all P