Of the 829 study patients, 393 (47.4%) had appendicitis. Other diagnoses included non-specific abdominal pain for 259 patients, urinary tract infection for 29, acute gastroenteritis for 24, acute diverticulitis for 19, ovarian cyst for 17, gynecological infections for 11, and acute cholecystitis for 9. Other specific diagnoses were found in 68 patients.