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Sensitivity, Specificity

Xray No TB Yes TB Total
Negative 1739 8 1747
Positive 51 22 73
Total 1790 30 1820

Calculate the sensitivity and specificity of an X-ray as a screen for TB and write a brief conclusion statement.

Solution Summary

We can assume that there are four possible groups of patients, as indicated (a, b, c, d) in the table: ...
From these we determine the sensitivity and specificity as follows: ...

Complete, step-by-step solutions for both Sensitivity and Specificity.