One recent study (27) evaluated the detection rate of glandular lesions (both AIS and adenocarcinoma) and found that the false-negative rate
for Pap tests to detect glandular lesions was 8.
We include the 2008 ACS so that we can examine an assumption in the Medicaid evaluation literature: that year-to-year variation in the false-negative rate
is constant across the states and does not systematically bias estimates of the impact of Medicaid expansions on health insurance coverage.
Overall, to better define any hazard-screening program, we should seek enough understanding to allow us to estimate the false-positive rate ([alpha]), the false-negative rate
([beta]), and the likely frequency of the hazard (P[H]).
TABLE 4 Niton Soil Measurement Methods and Corresponding False-Negative Rates
Niton Soil Number of Number of Measurement False-Negative Positive Laboratory Method Readings (<400 ppm) Results ([greater than or equal to]400 ppm) Surface readings 13 62 (Test Cup 2) Bagged readings 13 62 (Test Cup 2) Test Cup 1 1 57 (Test Cup 1) (prepared by grinding) Test Cup 2 2 62 (Test Cup 2) (prepared by grinding and sieving) Niton Soil False-Negative Measurement Rate Method Surface readings 21% Bagged readings 21% Test Cup 1 2% (prepared by grinding) Test Cup 2 3% (prepared by grinding and sieving)
Participants in PAP-PT had a lower false-negative rate
The overall false-negative rate
of sentinel node biopsy in primary breast cancers [greater than or equal to] 3 cm was 8/64 (13%).
The false-negative rate
improved as more nodes were dissected: 17 of 41 (41.
IgG anti--pertussis toxin enzyme-linked immunosorbent assay (ELISA) testing is superior to IgA anti--pertussis toxin ELISA, which has a high false-negative rate
Jackson also reported that with the IEC, ADA, and VA/DoD cutoffs for diabetes, screening with HbA1C was specific but insensitive, with a false-negative rate
of 68% at the 6.
4% false-positive rate and a 13% false-negative rate
The false-negative rate
for the LDST has been reported to be close to zero at cutoffs above 500-550 nmol/L (18-20 [micro] g/dL) (4,5,7,15-17).
28) The National Academy of Clinical Biochemistry, however, has recommended that the sensitivity of qualitative or semiquantitative dipstick testing exceed 95% in order to minimize the false-negative rate
and, consequently, the need to confirm negative as well as positive-negative results by a laboratory method.