measurement bias

(redirected from systematic measurement error)

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 ?
Systematic measurement error is much easier to find and identify than random error.
Once the cause for the systematic measurement error is found and corrected, the test is recalibrated.
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).
Bias, or systematic measurement error, in the use of fall risk assessment tools receives little attention in the literature.
46 indicated that the * Model not tested on best cut-off score an independent was 5 points sample * ROC (1) analysis indicated that the best cut-off score was 2 points Systematic Measurement Error Precision Error Not reported Not reported Accuracy Error Not reported False positive = 47.
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.
Operators can cause systematic measurement errors without noticing them simply by selecting the wrong settings.
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.
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