Data_Sheet_1_Assessment of Surgical Complications With Respect to the Surgical Indication: Proposal for a Novel Index.docx

Introduction: The Clavien–Dindo classification is a broadly accepted surgical complications classification system, grading complications by the extent of therapy necessary to resolve them. A drawback of the method is that it does not consider why the patient was operated on primarily.
Methods: We designed a novel index based on Clavien–Dindo but with respect to the surgical indication. We surveyed an international panel of otolaryngologists who filled out a questionnaire with 32 real case-inspired scenarios. Each case was graded for the surgical complication, surgical indication, and a subjective rating whether the complication was acceptable or not.
Results: Seventy-seven otolaryngologists responded to the survey. Mean subjective rating and surgical complication grading for each scenario showed an inverse correlation (r2 = 0.147, p = 0.044). When grading the surgical complication with respect to the surgical indication, the correlation with the subjective rating increased dramatically (r2 = 0.307, p = 0.0022).
Conclusion: We describe a novel index grading surgical complications with respect to the surgical indication. In our survey, most respondents judged a complication as acceptable or not according to its grade but kept in mind the surgical indication. This subjective judgment could be quantified with our novel index.