However, the
rate of false positive results is likely to increase when testing is performed on animals without clinical signs or who have not come from a high - risk situation.
One might accept a higher
chance of a false positive result in a preliminary study, for instance, whereas a drug trial might require a lower p - value.
The action of simply having a particular app installed also does not substantially prove the existence of modifications, so the «check» also yields a fair
amount of false positives.
While there have been
instances of false positives and false negatives, in most cases a false positive is the result of a known drug reaction.
Because the number of potential factors is practically unlimited, and stock price changes are largely random,
hundreds of false positives are inevitable.
What's more, with the advent of next - generation sequencing, I hate to tell you, but people are going to be reporting a
lot of false positives.
This is due to the high sensitivity, yet low specificity (occasional
incidence of false positives) of the in - clinic test kit; false negative tests are very rare.
She points out that the test would have to have a very low
rate of false positives to avoid putting healthy people at risk of picking up diseases from other, genuinely infected people.
If the
consequences of false positives are much more severe than the consequences of false negatives, then allowing for more false negatives might make sense.
The cost of testing (and often re-testing
because of false positive test results) hinders the success of a spay and neuter program.
I'm happy I found this site, and am happy bonafide scientists are addressing errors of the skeptics, who seem to have little concern about avoiding false negatives (or our biological and economic welfare) and are excessively fearful
of false positives for whatever reasons.
Binary stars provide the primary source
of false positives among Kepler planet candidates, implying that false positives should be nearly randomly - distributed among Kepler targets.
Results from these tests provide also in many cases insights into the nature of the
sources of the false positives, which are generally produced by one of several kinds of configurations involving eclipsing binaries (EB).
This search is contaminated by a large
fraction of false positives, caused by different eclipsing binary configurations that might be confused with a transiting planet.
The cost of testing (and often re-testing because
of false positive test results) hinders the success of a spay / neuter program.
In addition, more than half of women who get annual screenings for 10 years can expect to have a false positive mammogram that requires additional images, and about 20
percent of these false positives result in unnecessary biopsies.
The disease is notoriously difficult to diagnose, leading to a large
proportion of both false positives — where patients undergo surgery they don't need — as well as false negatives — where appendicitis is mistaken for gas or cramps and left untreated.
Hence, we obtain results about the population of these systems, which may be useful to the study of the distribution of binary systems, and for the calibration of the expected number and
nature of false positives in upcoming and planned space missions for transit searches, such as Kepler (Borucki et al. 2008; Gautier et al. 2007, for ground - based follow - up), TESS (Brown & Latham 2008), and PLATO (Catala & the PLATO consortium 2008).
In the original work by Brown, slightly different
classes of false positives were used: MPU (main - sequence star with a giant planet); MSU (undiluted binaries); and the two types of diluted binaries, MSDF (an eclipsing binary + a third non-related star) and MSDT (triple systems).
But the problem
of false positives from picking up unrelated information — what scientists call «artifact» — is still a problem for consumer companies to solve, and the technology that she has seen so far is very rudimentary.
Phrases with «of false positives»