Sentences with phrase «of a false positive»

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.
A clause was also added giving context to the number of false positives in the research.
Does the risk of false positive results outweigh the benefit of preventing a small number of deaths from breast cancer?
«The risk of a false positive makes it unlikely to be used by criminals to scope out a home,» he said.
Are there any proven cases of false positives in this test similar to other breeds?
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.
It does have a high incidence of false positives and can have a false negative.
This raises the possibility of a false positive match, which can have serious consequences for the accused.
The likelihood of false positives goes up with every assessment given.
There is a high rate of false positives on the 1 - hour glucose challenge test.
But reducing the risk of false positives leads to more false negatives, and vice versa.
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.
Some have argued that the lack of specificity is a consequence of the false positive rate of any objective diagnostic test.
Is it possible to decrease the costs 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.
It registered just a fifth of the false positives and false negatives of the next best system.
The test also had a handful of false positives, however, making its specificity 92 %.
The shape of the overall distribution of the false positive rate follows previous predictions, except for candidates with transit depths below about 0.4 %.
The magnitude of both false positives and false negatives should be considered in personnel decisions.
The occurrence of these false positives is the primary reason technical investors need to use more than one indicator.
Because the number of potential factors is practically unlimited, and stock price changes are largely random, hundreds of false positives are inevitable.
What are the implications of false positives and false negatives created by a machine?
First, the number of false positive results is rather high and varies widely by state.
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.
So the new approach greatly reduces the chances 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.
The continuing problem of false positives in repeated measures ANOVA in psychophysiology: A multivariate solution
But an alternative is to make statistical calculations for the probability of false positives among these thousands of exoplanet candidates.
Brown (2003) completed the pioneering work on the types of false positives expected in transit searches.
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.
Frankly, I'll take the fear of false positives over the fear of ignorantly not knowing I have cancer anytime.
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.
Less obvious is the potential harm of false positive results and subsequent costly or invasive procedures.
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.
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