). Thus, For Exact Calculation Of Specificity Sign, Its

). Thus, for exact calculation of specificity Sign, its diagnostic importance all available symptoms and Syndromes can be divided conditionally on: 1. Is true-positive () 3. Is false positive () 2. Is true-negative () 4. Is false negative () In a general view the diagnostic importance of any symptom looks as The following formula: (io-lp): (ip-lo) = { (:ÉÕ ()} x {P (\): (\)} In practice use more often and estimate Variety of separate tests, symptoms, signs. Diagnostic Their specificity essentially differs. For example, efficiency Laboratory tests considerably varies at the expense of change of borders Sensitivity and specificity of the chosen signs. For revealing of basic signs and symptoms of concrete disease it is necessary to define diagnostic sensitivity (), diagnostic specificity () and diagnostic efficiency () a concrete sign, a syndrome and . = : + 100 %, where - is true-positive results, - is false-negative results of Dch the percent, the better an indicator for revealing of the given disease is expressed in percentage and the above.