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 ?
Of course, a systematic measurement error will also act like a break, and a one-off shift like a measurement error, which will 'confuse' the analysis, as would a measurement error followed by a break of a similar magnitude and sign.
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.
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