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词汇 false negative
释义

Definition of false negative in English:

false negative

noun
  • A test result which wrongly indicates that a particular condition or attribute is absent.

    it's possible to have a false negative—the test says you aren't pregnant when you are
    as modifier premature assessments may give false negative results
    Example sentencesExamples
    • These cutoffs were intentionally set "low" to prevent false negatives during the screening phase.
    • DNA evidence is so accurate that I think that having false negatives is a rarity.
    • To account for the possiblity of false negatives, a test should be done more than 3 months after exposure.
    • There are some who say that because of false positives and false negatives early detection is not worth it.
    • According to the National Cancer Institute, in women ages 40-49 there is a high rate of missed tumors, resulting in 40% false negative test results.
    • Unfortunately, it has a 40% false positive rate ... though it has a very low false negative rate.
    • False negatives create a sense of security that is certainly sometimes unwarranted.
    • In the case of a number of patients who were given false negative results on cervical screening in east Kent in England, the courts awarded the patients compensation.
    • Some parents who receive false negative results experience anger, and some have planned to take legal action.
    • False negatives could have bigger consequences than false positives.
    • It takes time for antibodies to develop, so having the test too early can lead to false negative results.
    • First, he says, the test can give false negative or positive readings, requiring additional tests for verification.
    • There is, however, an irreducible number of false negative results in any screening programme; the reasons for this are complex.
    • But the technology is expensive and subject to false negatives, Lowe says.
    • From my own site's statistics, that figure is a refreshing 99.22%, with 0.26% false positives and 0.52% false negatives.
    • In terms of misclassifications, false positives were more prevalent than false negatives.
    • The false negative rate is 4.6 per cent.
    • A needle biopsy can produce a false negative if enough cells are not sampled.

Definition of false negative in US English:

false negative

noun
  • A test result which incorrectly indicates that a particular condition or attribute is absent.

    it's possible to have a false negative—the test says you aren't pregnant when you are
    as modifier introducing a known quantity of cyanide into the sample may prevent false negative results
    Example sentencesExamples
    • Unfortunately, it has a 40% false positive rate ... though it has a very low false negative rate.
    • These cutoffs were intentionally set "low" to prevent false negatives during the screening phase.
    • False negatives could have bigger consequences than false positives.
    • DNA evidence is so accurate that I think that having false negatives is a rarity.
    • In the case of a number of patients who were given false negative results on cervical screening in east Kent in England, the courts awarded the patients compensation.
    • But the technology is expensive and subject to false negatives, Lowe says.
    • To account for the possiblity of false negatives, a test should be done more than 3 months after exposure.
    • First, he says, the test can give false negative or positive readings, requiring additional tests for verification.
    • The false negative rate is 4.6 per cent.
    • There are some who say that because of false positives and false negatives early detection is not worth it.
    • From my own site's statistics, that figure is a refreshing 99.22%, with 0.26% false positives and 0.52% false negatives.
    • Some parents who receive false negative results experience anger, and some have planned to take legal action.
    • A needle biopsy can produce a false negative if enough cells are not sampled.
    • In terms of misclassifications, false positives were more prevalent than false negatives.
    • According to the National Cancer Institute, in women ages 40-49 there is a high rate of missed tumors, resulting in 40% false negative test results.
    • There is, however, an irreducible number of false negative results in any screening programme; the reasons for this are complex.
    • False negatives create a sense of security that is certainly sometimes unwarranted.
    • It takes time for antibodies to develop, so having the test too early can lead to false negative results.
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