measurement bias

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measurement bias

Decision making
A systematic measurement error that skews all data; for example, an improperly calibrated sphygmomanometer produces biased blood pressure readings.
 
EBM
A systematic error that occurs when, because of the lack of blinding or related reasons such as diagnostic suspicion, the measurement methods (instrument, or observer of instrument) are consistently different between the groups in a study.
References in periodicals archive ?
Bockenhoff, "Analysis of short-term systematic measurement error variance for the difference of paired data without repetition of measurement," AStA.
Bias, or systematic measurement error, in the use of fall risk assessment tools receives little attention in the literature.
Paul Liegey compared traditional CPI methods for two apparel categories (women's coats and jackets and women's suits) to hedonic-quality indexes and found no single direction of difference between the two.(34) While Robert Gordon(35) finds evidence of a systematic effect arising from quality adjustment procedures, in some durable goods, Jack Tripleu notes a nonsystematic effect of quality adjustment procedures for items such as new and used automobiles, airlines, and services(36) Thus, evidence does not exist that the quality adjustment procedures lead to systematic measurement error.
Although there are many kinds, the attention will now be directed to the potential systematic measurement errors arising from changes in consumer selection of products or outlets.
According to the provided systematic measurement errors of the used devices in Table 2, a measured temperature of approximately 270[degrees]C is necessary until the RE exceeds the systematic measurement error of the IR camera in the worst case (ABS).
According to the provided systematic measurement errors of the used devices in Table 2, a measured temperature of approximately 270 [degrees]C is necessary until the RE exceeds the systematic measurement error of the IR camera in the worst case (ABS).
Systematic measurement error of infrared camera and contact thermometer (CT).
Once the cause for the systematic measurement error is found and corrected, the test is recalibrated.
Method effects associated with item wording have been explored in a variety of instruments and found that the practice of using positively- and negatively- worded items may introduce systematic measurement errors that disrupt analyses and interpretations of the results.
"Operators can cause systematic measurement errors without noticing them simply by selecting the wrong settings.
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