A Patient Who Had a Mantoux Test for Tuberculosis Two

question 10

Multiple Choice

A patient who had a Mantoux test for tuberculosis two days ago has a 2 mm area of erythema at the site of the test. The nurse concludes that this patient's response

• A) is negative.
• B) is positive for tuberculosis.
• C) should be followed up with a tine test.
• D) is unable to determine the presence of tuberculosis.

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Definitions:

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values.

Mean

A statistical measure representing the average value of a set of numbers, calculated by dividing the sum of all values by the count of values.

Z-score

A statistical measure representing the number of standard deviations a data point is from the mean of the dataset, often used in standardizing scores.

Chi-square Test

A statistical procedure employed to evaluate whether a significant correlation exists between two variables that are categorical.