Abstract: From 1969 to 1993 six major sets of diagnosis criteria were proposed for BD. The analysis of sensitivity, specificity and the accuracy was done on 2632 BD patients and 1916 control patients. A Confidence Interval (CI) at 95% was calculated for each result. Sensitivity: Mason & Barnes 70.9% ± 1.7, O'Duffy 77% ± 1.6, International 84.5% ± 1.4, Dilsen 89.4% + 1.2, Japan 90.8% ± 1.1, Iran 95.6 ± 0.8 ...