LAUSR

Major complications after surgery, defined as Clavien-Dindo class IIIa and greater, seriously affect patient outcomes. Although old age is reportedly one of the risk factors for major complications after gastrointestinal surgery , several investigators reported that age was not found to be the risk factor of major complications after gastrointestinal surgery . These discrepancies in the effects of aging on major complications have been thought to be caused by the aging process including either the effects of age alone or several conditions and comorbidities. The effects of age alone on major complications after gastrointestinal surgery, however, have not been evaluated well. In the present study, we investigated associations between age alone and major complications after gastrointestinal surgery.