There were 3 (
false negative) and 1 (false positive) cases.
Among the
false negatives, about 60% reported having other insurance coverage.
The
false negative rate in our study was 10% (3/30) which was not within the target (<5%) set by 2005 guidelines of American society of clinical oncology2.
Peru and recently Eritrea had a high percentage of gene deletion and so a high percentage of
false negatives. In that case, they had withdrawn the use of RDT and advise the use of alternative methods of malaria testing.'
As a result, EBUS-TBNA reported as anthracosis was
false negative in 25.8% of lung cancer and 5.2% of EMT patients.
The goal in setting this range is to have the least number of false positives and
false negatives.
False negatives will occur when the ion ratio of analytes in spiked environmental samples does not meet the tolerance criteria such that the analyte in question will be considered "nondetect." On the contrary, one cannot set a tolerance range too wide that will likely result in a significant number of false positives.
Evaluation of the value of Saline Sonosalpingography Total Number of Patients 20 True positives 12 True negatives 5 False positives 1
False negatives 2 Sensitivity 85.71% Specificity 83.33% Positive predictive value 92.31% Negative predictive value 71.43% False positive rate 28.57%
False negative rate 14.29% Likelihood ratio if test positive 5.14% Likelihood ratio if test negative 0.17% Accuracy 85% Prevalence 70%
A similar study in Nigeria with same sample size like our study showed high
false negative rate and no false positive results on ICT as compared to ELISA .It is not consistent with our results.
Ideally for a good diagnostic test,
false negative should be zero.
(3) In the American College of Surgeons oncology Group (ACOSOG) Z1071 trial, cN1 subgroup no node was dissected in 46 of 649 patients (7.1%) and
false negatives occurred for 56 of 351 patients (16%).
At least three of the volunteers with a history of severe reaction to peanuts had a variety of reactions (including one
false negative) to one or more of the three commercial extracts tested.