So false negative
rate of test B is c/(a+c) = 10/40 = 0.
1%) and false negatives
occurred for 56 of 351 patients (16%).
One can arrive at the relative costs by deciding how many false positives one will accept for every false negative
, or equivalently, how many false negatives
one will accept for every false positive.
The staff report, which is not an official Commission report but reflects the views and findings of some of its staff members, specifically cautioned that the available lead test kits today often result in too many false positives or false negatives
But yesterday a spokesman for the trust said they were not aware of any woman finding out she was actually pregnant after being given a false negative
The concern expressed by advocates of the precautionary principle is about the failure to detect a problem, the chance of allowing a false negative
(a type II error).
This result was obviously a false negative
, a nonlegitimate negative that might have detained a perfectly viable and necessary investigation.
Both computerized systems are intended to reduce the false negative
rate in Pap smears.
A test result that misses something really there is called a false negative
In addition, the records of the 1,252 patients not scoring in the severe" range were examined to determine the incidence of false negative
findings, that is, the number of patients who made unsuccessful or successful suicide attempts and were identified by test results as being subacute.
If a rule was not triggered but the smear contained a positive finding, the sample was graded as a false negative