Sentences with phrase «is a false positive on»

Not exact matches

There are numerous false positives of rising VIX on a modest pullback.

Claiming a god exists is absolutely a positive statement of false knowledge, but saying we can't know, don't know, and that we as an individual don't have enough evidence to make a positive statement on any gods existance, that's a rational position to take.

Which brings us back to Oona Stannard's clear and public statement on 25 February that the Government's «draft guidance is a positive step forward -LSB-... It] helps support schools in counteracting [false impressions of relationships] from within their own carefully planned SRE programmes.»

When the SCAT2 was issued, superseding the original SCAT published in 2005, the authors recommended continued reliance on the SAC until prospective studies could be conducted to assess the SCAT2's sensitivity (how good the test is in identifying athletes with concussion; for example, a test which is very sensitive will have few false negatives, rarely missing those later found to have concussion) and specificity (a test with high specificity will have few false positives, rarely mis - classifying people without concussion as having concussion).

Despite the name, a chemical pregnancy is not a false pregnancy or a false positive on a pregnancy test.

I have six children and after the third, I gave up on the moms groups, and play dates, etc. because it just seemed like so much work to be superficial to try to be positive, and do my hair, and try to match my clothes (let alone put on a bra) to try to keep up with some false image.

Highland Park's system will be on from 7 a.m. to 10 p.m., when the parks are open, to minimize disturbing neighbors with «false positives,» said Calvin Bernstein, the chairman of the district's Finance Committee and a strong advocate of acquiring the system.

«Anomaly detection isn't new, and it has a problematic history of reporting a lot of false positives,» says Dr. Will Enck, an assistant professor of computer science at NC State and co-author of a paper on the work.

David Colquhoun, a retired pharmacologist and feisty tweeter on these issues, proposes that researchers should report not only the P value, but also how likely the hypothesis needed to be to assure only a 5 percent false positive risk.

These high - energy rays are also easily distinguished from normal background radiation, cutting down on false positives.

While there are a number of portable tests for cocaine commercially available, these are mainly based on antibody reagents, which can not offer quantitative data and — since the cocaine antibody can bind to something that is not cocaine — can give false positive results.

The blood tests, used on at least 2 million people a year, are wrong 50 % of the time, says WHO, yielding either false positives or negatives, both of which are dangerous.

Used in conjunction with mammography, imaging based on nuclear medicine is currently being used as a successful secondary screening alongside mammography to reduce the number of false positive results in women with dense breasts and at higher risk for developing breast cancer.

To reduce false positives when identifying genetic variations associated with human disease through genome - wide association studies (GWAS), Dartmouth researchers have identified nine traits that are not dependent on P values to predict single nucleotide polymorphisms (SNP) reproducibility as reported in Human Genetics on October 2, 2014.

On that basis, Kennedy says, «clearly this method is prone to false positives.»

The data on the numerous candidates are somewhat preliminary and require validation, but a new analysis by a pair of astrophysicists at the California Institute of Technology suggests that the percentage of false positives among Kepler's candidate planets may be less than 10 percent.

«Our finding of time - limited harm after false - positive screening mammograms is relevant for clinicians who counsel women on mammographic screening and for screening guideline development groups,» the researchers note.

While the result is false, the psychological toll is real, and so are the billions of dollars spent every year on tests and procedures performed as a result of false positives.

Discounting false positive sources based on observational or instrumental artifacts or produced by statistically possible coincidences of noise - features in low - amplitude detections, such sources are all related to eclipsing systems.

Next, the authors used a machine learning classifier trained on 592 true positive and 1,630 false positive de novo calls that had been validated experimentally.

Adaptive optics images made with ARIES at the MMT of 87 Kepler Objects of Interest place limits on the presence of fainter stars in or near the Kepler... ▽ More The Kepler mission has revolutionized our understanding of exoplanets, but some of the planet candidates identified by Kepler may actually be astrophysical false positives or planets whose transit depths are diluted by the presence of another star.

This issue was identified by follow - up on likely «false - positive» genetic associations with genome - wide statistical significance in case - control analysis.

Major sources of astrophysical false positives are planetary transits and stellar eclipses on background... ▽ More The Kepler Mission was launched on March 6, 2009 to perform a photometric survey of more than 100,000 dwarf stars to search for Earth - size planets with the transit technique.

A suite of diagnostic tests is performed on all candidates to aid in discrimination between genuine transiting planets and instrumental or astrophysical false positives.

One common cause of false positives are so - called «high - risk» lesions that appear suspicious on mammograms and have abnormal cells when tested by needle biopsy.

On the plus side, Aisner points out, testing via circulating tumor DNA returns very few false - positives — when a test discovers DNA with a cancer - causing genetic change, it is strong evidence that this alteration is, in fact, present in the patient's cancer.

Based on several realistic estimates of this frequency we conclude with very high confidence that this small signal is due to a super-Earth-size planet (Kepler - 9d) in a multiple system, rather than a false positive.

In legal terms, the false positive rate means the proportion of cases in which, on the basis of the evidence, a suspect is found guilty when in fact they are innocent.

The sample number was progressively reduced to 129 KOIs on 125 target stars, by removing already known false positives, stars too faint to be observed by SOPHIE, and candidates with orbits of more than 400 days, to insure that at least 3 transits could be observed.

«Our finding that breast cancer risk remains elevated up to 10 years after the false - positive result suggests that the radiologist observed suspicious findings on mammograms that are a marker of future cancer risk,» said the study's lead author, Louise M. Henderson, PhD, a UNC Lineberger member and an assistant professor of radiology at the UNC School of Medicine.

Data filtering criteria based on the cross correlation score (Xcorr) and delta correlation (ΔCn) values along with tryptic cleavage and charge states were developed using the decoy database approach and applied for filtering the raw data to limit false positive identifications to < 1 % at the peptide level [22]--[24].

Discussion: «Our finding of time - limited harm after false - positive screening mammograms is relevant for clinicians who counsel women on mammographic screening and for screening guideline development groups.»

It is clear, however, that evidence of an excess of amino acid substitutions (at least from site - by - site tests) is no longer a sufficiently convincing demonstration of selection, not only because a high ratio could result from selection on synonymous mutations rather than positive selection on proteins [5], but also because there is potentially a high false discovery rate of selected sites [6].

In fact, the FDA has been cracking down on some services in recent years, pointing out the health risks posed by possible false positive or false negative results.

People who got a false - positive result on a breast or prostate cancer screening test were more likely to adhere to screening guidelines for breast cancer and colon cancer going forward, researchers found.

There is a high rate of false positives on the 1 - hour glucose challenge test.

Thore says that her doctor told her that the false positives were likely caused by her PCOS, and cysts on her uterus that can secrete pregnancy hormones.

Mostly, we worried about the signals that low proficiency standards sent to parents: the false positives indicating that their kids were on track for success when they actually weren't.

[12] The false positive rate, those teachers who are not classified as low performing based on initial pre-tenure performance but who are low performing according to post-tenure performance is also 68 percent (i.e. those in column 1 but not in row 1).

Setting the effectiveness minimum based on an imperfect measure will result in both false positives and false negatives: some teachers will be falsely classified as ineffective when their true effectiveness is above the cutoff, and others will be falsely classified as effective when their true effectiveness is below the cutoff.

Those teachers above the red line (true effectiveness) on the vertical axis but below the blue line (measured effectiveness) on the horizontal axis are misclassified as ineffective — a false positive (represented by the red dots).

The terms false positive and false negative can be confusing, because what is «true» or «false» depends on the hypothesis being tested, and the term «positive» does not necessarily connote that a teacher is effective or ineffective.

Misclassified cases are either false positives (FPs; those students identified as at risk who later perform satisfactorily on reading outcomes) or false negatives (FNs; those students not identified by the screen as at - risk but who later perform poorly on reading outcomes).

I have also had a couple engine lights come on but they were false positive.

On the other hand, the more you «sell» it with false pretenses like «BESTSELLER», the more critically and harshly they will read (higher expectations are harder to meet) so you'll get less positive reviews and shares.

I do not recommend simply running a replacement on this search, however, because there would be too many false positives.

It should be noted that tests on kittens under 6 months of age frequently result in false positive results and should be deemed unreliable.

Add some education on animal health and welfare and you'll be well on your way to effecting positive change while inoculating yourself against unfair and false accusations.

On occasion false positives can occur, so this verification test is important.

Glucose - positive urine can be false - negative for protein on dipstick tests.