Characteristics of Biomedical Measures

Question	Answer
Sensitivity	The degree of change in the physiological variable the instrument can detect
Specificity	The capability of the instrument to measure the desired variable of interest
Stability	The ability of an instrument to maintain a calibration over a given time interval
Validity	The extent to which the instrument measures the actual parameter of interest
Accuracy	Degree to which the variable sensed by the instrument reflects the actual value
Precision	The discriminatory power of the instrument; the smaller the change sensed, the greater the precision
Reliability	Accuracy of the measurement over time

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	Created by Donna Myers over 9 years ago