References
- Andersson R, Hugander A, Thulin A, Nystrom PO, Olaison G. Indications for operation in suspected appen-dicitis and incidence of perforation. BMJ 1994; 308: 107–110.
- Andersson RE, Hugander A, Thulin AJ. Diagnostic accuracy and perforation rate in appendicitis: associa-tion with age and sex of the patient and with appen-dicectomy rate. Eur J Surg 1992; 158: 37–41.
- Andersson RE, Hugander AP, Ghazi SH et al. Diag-nostic value of disease history, clinical presentation, and inflammatory parameters of appendicitis. World J Surg 1999; 23: 133–140.
- Berry J, Jr., Malt RA. Appendicitis near its centenary. Ann Surg 1984; 200: 567–575.
- Chung IL, Kong MS, Lin SL et al. Diagnostic value of C-reactive protein in children with perforated appendi-citis. Eur J Pediatr 1996; 155: 529–531.
- Coleman C, Thompson JE Jr, Bennion RS, Schmit PJ. White blood cell count is a poor predictor of severity of disease in the diagnosis of appendicitis. Am Surg 1998; 64: 983–985.
- Colson M, Skinner KA, Dunnington G. High negative appendectomy rates are no longer acceptable. Am J Surg 1997; 174: 723–726.
- Diethelm A, Stanley R. The acute abdomen. In: Sabiston D, ed. Textbook of surgery. 13th ed. Philadelphia: Saunders, 1991: 736–756.
- Hallan S, Asberg A. The accuracy of C-reactive protein in diagnosing acute appendicitis-a meta-analysis. Scand J Clin Lab Invest 1997; 57: 373–380.
- Horwitz JR, Gursoy M, Jaksic T, Lally KP. Importance of diarrhea as a presenting symptom of appendicitis in very young children. Am J Surg 1997; 173: 80–82.
- Korner H, Sondenaa K, Soreide JA et al. Incidence of acute nonperforated and perforated appendicitis: age-specific and sex-specific analysis. World J Surg 1997; 21: 313–317.
- Korner H, Soreide JA, Sondenaa K. Diagnostic accuracy of inflammatory markers in patients operated on for suspected acute appendicitis: a receiver operating characteristic curve analysis. Eur J Surg 1999; 165: 679–685.
- Kraemer M, Kremer K, Leppert R, Yang Q, Ohmann C, Fuchs KH. Perforating appendicitis: is it a separate disease? Acute Abdominal Pain Study Group. Eur J Surg 1999; 165: 473–480.
- Luckmann R. Incidence and case fatality rates for acute appendicitis in California. A population-based study of the effects of age. Am J Epidemiol 1989; 129: 905–918.
- Nauta RJ, Magnant C. Observation versus operation for abdominal pain in the right lower quadrant. Roles of the clinical examination and the leukocyte count. Am J Surg 1986; 151: 746–748.
- Picus D, Shackelford GD. Perforated appendix present-ing with severe diarrhea. Findings on barium-enema examination. Radiology 1983; 149: 141–143.
- Pieper R. Acute appendicitis. A study of its pathogen-esis, clinical features and histopathology. . Stockholm: Karolinska University; 1981. (Thesis).
- Styrud J, Eriksson S, Granstrom L. Treatment of per-forated appendicitis: an analysis of 362 patients treated during 8 years. Dig Surg 1998; 15: 683–686.
- Tehrani HY, Petros JG, Kumar RR, Chu Q. Markers of severe appendicitis. Am Surg 1999; 65: 453–455.
- Temple CL, Huchcroft SA, Temple WJ. The natural history of appendicitis in adults. A prospective study. Ann Surg 1995; 221: 278–281.
- Watters JM, Blakslee JM, March RJ, Redmond ML. The influence of age on the severity of peritonitis. Can J Surg 1996; 39: 142–146.
- Young B, Gleeson M, Cripps AW. C-reactive protein: a critical review. Pathology 1991;23: 118–124.
- Zweig MH. Evaluation of the clinical accuracy of laboratory tests. Arch Pathol Lab Med 1988; 112: 383–386.
- Zweig MH, Campbell G. Receiver-operating charac-teristic (ROC) plots: a fundamental evaluation tool in clinical medicine. Clin Chem 1993; 39: 561–577.