1
2
3
4
5
T + D T nod T + nod D T D T + nod T + D D + nod T + T + + T a a + c d b + d b b + d = 1 specificity c a + c = 1 sensitivity a a + b d c + d a + c a + b + c + d a + b a + b + c + d a + d a + b + c + d 6
7
8
9
10
11
12
13
14