## Answers

Tested Positive Disease Positive ve Disease Negative 473 75 Tested Negative 25 523 773, B = 75, C=25, D = 523 D Specificity = D/(0+ 1) X 100 = 523 (523+75) *100 = 5208- X100 = 87.45% 2) Sensitivity = Al CAPO) X 100 = 473 x.100 = 473 x 100 (173+25) 498 = 94-97% = 95% * The false positives are : A l(A+B) x 100 = 473 mm (22+75X100 = 473 x100 © The false negatives are = 86,31% = 523X 100 523+25* - D/CD+C) x 100 = 523 x 100 = 95.43% 523+25 548

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