The research data consist of 829 data collection forms. Out of these patients 103 lacked neutrophil count, and one lacked CRP count. Results of imaging were evaluated by in-house radiology residents. Details of in-hospital delay, histological findings of the appendix, and final diagnoses were retrieved from a hospital patient data database.
Patients’ medical records were reviewed after a minimum of 2 weeks after the admission to confirm the final diagnosis. If the patient was readmitted during these two weeks, and was diagnosed with acute appendicitis or appendicular abscess, the final diagnosis was classified as acute appendicitis.