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Consider the data shown in Table E1.15. Calculate the sensitivity and specificity of x-ray as a screening test for tuberculosis.

TABLE E1.15

 

 

 

 

 

Tuberculosis

X-ray

No

 

Yes

Total

Negative

1739

 

8

1747

Positive

51

 

22

73

Total

1790

 

30

1820

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