()
.
:
a ;
b ;
c ;
d - ;
= a/(a+c);
= d/(b+d);
=c/(+c)
= b/(b+d).
100 .
= a/(a+b);
= d /(c+b).
= (a+b) / a;
= (a+b+c+b) /a;.
.
. (likelihood ratios (LR)). , . , , , , . (LR+) , . :
, , ( ), LR+ . LR+ , . 1, 1 = 0, LR+ . LR+ = 1 , / , , . LR+ 1 , , , , . LR+ , .
(LR- ) , . LR- :