Antithrombotic drugs have a minimal effect on intraoperative blood loss during emergency surgery for generalized peritonitis: a nationwide retrospective cohort study in Japan.

"Declarations Ethics approval and consent to participateThis study was approved by the Institutional Review Board of Saiseikai Utsunomiya Hospital (No. 2018-15). The requirement for obtaining informed consent from patients was waived because the data sets were anonymous. Consent for publicationInformed consent was waived because of the anonymous nature of the data. Competing interestsT.M., H.S., K.K., A.K.L., T.K., Y.K., Y.K., and J.S. declare no competing interests.N.I. and H.M. are affiliated with the Department of Healthcare Quality Assessment, which is a social collaboration department at the University of Tokyo supported by National Clinical Database, Johnson & Johnson K.K., and Nipro Corporation. Competing interests T.M., H.S., K.K., A.K.L., T.K., Y.K., Y.K., and J.S. declare no competing interests. N.I. and H.M. are affiliated with the Department of Healthcare Quality Assessment, which is a social collaboration department at the University of Tokyo supported by National Clinical Database, Johnson & Johnson K.K., and Nipro Corporation."

"Funding This study was supported by a grant from the Japanese Society for Abdominal Emergency Medicine. The funding source had no role in the design, practice, or analysis of this study."