false-negative rate


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Related to false-negative rate: false negative error, True positive

false-negative rate

Etymology: L, fallere, to deceive, negare, to deny, ratum, calculate
the rate of occurrence of negative test results in subjects known to have the disease or behavior for which an individual is being tested.

false-neg·a·tive rate

(fawls-neg'ă-tiv rāt)
Percentage of incorrect results that are, in fact, positive.

false-negative rate

The rate of occurrence of negative test results in those who have the attribute or disease for which they are being tested.
See also: rate
References in periodicals archive ?
As a result of this strategy, we find the lot-to-lot variations in the false-positive and false-negative rates acceptable.
There is a high false-negative rate in this situation [22], This has been contradicted by a study performed in Cremona, Italy, where researchers were able to show that neoadjuvant chemotherapy does not alter the location of sentinel lymph nodes and they demonstrated a high pick-up rate before and after neoadjuvant chemotherapy [23], A meta-analysis in support of SLNB post neoadjuvant therapy on 1273 patients from 21 small studies showed an overall SLN detection rate of 90%, sensitivity 88%, specificity 100%, and false-negative rate of 12% [24], This compares very well with three meta-analyses of SLNB in patients who had not received neoadjuvant chemotherapy [25,26], with a highest detection rate of 96% and a false-negative rate of 7% in one of the studies [27].
Compared with each adjusted QM, the unadjusted QM had a false-negative rate of over 0.
Surface and bagged readings had false-negative rates of 21 percent, well above the study performance criteria of five percent or less.
chi square] and Fisher exact tests were used to compare the efficiency, false-positive rate, false-negative rate, and review rate between different sets of criteria.
So in essence, we're reducing the false-negative rate from 26% down to 4%," he said.
Due primarily to tumor heterogeneity, the false-negative rate for the HER2 test, particularly by immunohistochemistry (IHC), is estimated to be 10-15% or higher; the HER2 FISH test, which Biocept performs on CTCs, is considered a "gold standard".
Therefore, small size and low number of tumours could potentially account for the high false-negative rate (38%) seen in this study when accessing NMP22's ability to detect early carcinogenesis or subclinical recurrences.
1) In numerous instances, the literature indicates that radiographs have a high false-negative rate in detecting cervical-spine fractures.
The false-negative rate of conventional histology depends on the protocol followed for pathological examination of SLNs which varies considerably throughout Europe [7] and can be reduced by serial sections and immunohistochemistry (IHC).
Prior researchers have noted a 50% false-negative rate for the first polysomnograph in diagnosing OSA.