Development and validation of a nomogram for predicting post-operative abdominal infection in patients undergoing pancreaticoduodenectomy

•There are still few clinical models to predict abdominal infection after PD.•Preoperative biliary drainage increases risk of postoperative abdominal infection.•CRP, DB and AKP levels on POD3 contribute to prediction of abdominal infection.•The nomogram serves as an useful tool to predict postoperative abdominal infection.