Nighttime Cholecystectomies are Safe When Controlled for Individual Patient Risk Factors-A Nationwide Case-Control Analysis.

Background: The aim of this study was to evaluate if the time of day a cholecystectomy was performed affects in-hospital complication rates and mortality.

Methods: A national quality measurement database was retrospectively studied. Study period was 2010 to 2017.

Elevated preoperative CEA is associated with worse survival in stage I-III rectal cancer patients.

Background: The objective of this investigation was to assess whether preoperative carcinoembryonic antigen (CEA) level is an independent predictor of overall survival in rectal cancer patients.

Methods: All patients (n=504) undergoing a resection for stage I-III rectal cancer at the Kantonsspital St Gallen were included into a database between 1991 and 2008. The impact of preoperative CEA level on overall survival was assessed using risk-adjusted Cox proportional hazard regression models and propensity score methods.