Assessment of PULP score in predicting 30-day perforated duodenal ulcer morbidity, and comparison of its performance with Boey and ASA, a retrospective study.

•The current study is the first to report the sensitivity and specificity of the three scoring systems (ASA, Boey and PULP) for post perforated duodenal ulcer repair 30-day morbidity.•It is also the first study to assess accuracy indices for PULP in predicting post perforated duodenal ulcer repair 30-day morbidity.•Compared with ASA and Boey, PULP score had the largest area under the curve and was the only score to significantly predict post perforated duodenal ulcer repair 30-day morbidity.