RPFT Exam Dumps | A pulmonary function laboratory routinely tests five subjects as biologic controls. Acceptable instrument

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NBRC
Registry Examination for Advanced Pulmonary Function Technologists
NBRC.RPFT.v2023-05-04.q84
Question 23

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Question 23/84

A pulmonary function laboratory routinely tests five subjects as biologic controls.
Acceptable instrument performance over time is indicated when measurements

A. Are within the 95% confidence interval predicted for an individual being tested.

B. For each individual are within 2 standard deviations of the mean of previous
measurements for each individual.

C. Of the group as a whole agree with those predicted by linear regression for changes in age.

D. For an individual are within 2 standard deviations of the mean of those for the group.

Correct Answer: A

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