Which of the Following Is False About the Use of the Peak

question 19

Multiple Choice

Which of the following is false about the use of the peak expiratory flow rate (PEFR) in assessing a patient's response to bronchodilator therapy?

• A)PEFR and lab spirometry forced vital capacity values may correlate poorly.
• B)PEFR is the standard for determining bronchodilator response.
• C)Some peak flowmeters are more accurate and reliable than others.
• D)The peak flow measure is effort and volume dependent.

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Definitions:

Measuring Instrument

A device used for obtaining quantitative information about a physical quantity by comparing it to a standard or through calibration.

Coefficient Alpha

A measure of the internal consistency or reliability of a psychometric test score for a sample of examinees.

Average Interitem Correlations

A statistic used to measure the consistency of responses among related items on a questionnaire or test, indicating the scale's internal reliability.

Reliability Estimate

A statistical measure that quantifies the consistency of a set of measurements or ratings.