false-negative


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false-negative

 [fawls´ neg´ah-tiv]
1. denoting a test result that wrongly excludes an individual from a diagnostic or other category.
2. an individual so excluded.
3. an instance of such a result; called also false-negative reaction.

false-negative

(fôls′nĕg′ə-tĭv)
adj.
Being or relating to a result from a medical test that is erroneously negative.

type-2 error

An error made when a test fails to reject a false null hypothesis.
References in periodicals archive ?
They found reporting error, not editing and imputation procedures, was the main cause of the undercount, in particular false-negative response error.
The MMSE was the least accurate, with a 21% misclassification rate, reflected in an 18.6% false-positive rate for those without dementia and a 2.4% rate of false-negative for those with dementia.
For girls who had false-negative results and were later diagnosed with autism, the delays were more pronounced, compared with girls with true-negative results.
The researchers found that, compared with the true-negative group, children in the false-negative group exhibited delays in social, communication, and motor skills; these differences were more pronounced in girls.
After the positive HBsAg results were reported, an epidemiologic investigation was initiated by NDHHS and the Lincoln-Lancaster County Health Department to determine the cause of the false-negative test results and to identify any HBV transmission.
Deficiencies in RDT storage and operational issues were ruled out as causes of the false-negative results.
In our study, we found false-negative rate as 5.2% in ETM group which was less than lung cancer group.
These results indicate that the differences in the ion ratios at different concentrations should be taken into account because if only one tolerance limit is applied across all concentrations, it is likely that false-negative results will occur at low concentrations, especially at concentrations between 1.56 to 12.5 ppb.
States variably use either IRT/IRT, IRT/DNA, or IRT/IRT/DNA protocol, and although each protocol aims for optimal sensitivity with high specificity, false-positive and false-negative results still occur [5].
[13,14] Various substances may interfere with immunoassays by cross-reacting with the test reagents and resulting in false-negative, false-positive or invalid results.
Positive Predictive Value (PPV], Negative Predictive Value (NPV], false-positive rate and false-negative rate were determined.