Scoring systems seem to be ideal for supporting diagnosis of acute appendicitis because they are non invasive, require no special equipment and can be used in clinical routine. Several scores for appendicitis have been developed with good results in the original publications. Unfortunately these good results could not be reproduced on a German data base. Therefore we developed a new score using multivariate statistics and a quality controlled prospective data base. The score covers 8 variables: tenderness, rebound tenderness, micturition, type of pain, leucocytes, age, relocation of pain, rigidity. Independent evaluation of the score on a Dutch database resulted in a negative appendicectomy rate of 21% and a missing appendicitis rate of 2%. The results are encouraging, so that further testing and clinical application can be recommended.
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