Sentences with phrase «of false positive test»

The cost of testing (and often re-testing because of false positive test results) could possibly hinder the success of a spay and neuter program.

Not exact matches

The data presented last week, though not peer - reviewed, suggests they can do that remarkably well — with the algorithm, in the five - minute testing windows, detecting AFib with a 99.3 % rate of sensitivity and a 0.8 % rate of «false positives.»

The national cost of false - positive tests and overdiagnosed breast cancer is estimated at $ 4 billion a year, according to a 2015 study in Health Affairs.

They suggest most women in their 40s should not have routine mammograms because the tests may cause more harm than good because of false positive results (follow - up testing proves negative for cancer).

A new genetic test that analyzes the free DNA floating in a pregnant woman's blood was proven to be more effective at predicting chromosomal disorders compared with standard screening tests, due to its much smaller incidence of false - positive results.

THE BIOPSY»S DANGEROUS CASCADE: HOW TO LESSEN THE NEED FOR INVASIVE TESTING Intervention Track Hosted By: Insigniam Current medical tests are too often marred by high rates of overdiagnosis («false positive» results) or they too often miss the danger altogether («false negatives»).

Unless you think the amounts of the decay element are varying just the right amount to give a false positive to highly repeatable tests and calibrations from samples all over the world (and beyond with meteorites), then you are wrong.

Christian disbelief is, instead, a positive testing of what is true and false by a single criterion: «By this you know the Spirit of God: every spirit which confesses that Jesus Christ has come in the flesh is of God, and every spirit which does not confess Jesus is not of God» (1 John 4:2 — 3).

This study leaves open the question of whether the green tea tested in this study is contaminated with gluten or if something in the green tea is causing false positive results.

Fearful of a mass drug - test failure — poppy seeds are said to cause false positives — Chimello ordered flight attendants to replace the offending rolls with unseeded ones.

But then again, the thousands of false positives on a cancer screening also suffer in some ways, the emotional stress, the follow - up testing, etc..

Although we do not have results of confirmatory testing, we would expect a similar rate of false positives for our screening.

Rather than being «confirmed,» they were «validated» through a series of simpler follow - up observations and complex statistical tests designed to rule out false positives.

Because only about 16 in every 100,000 people end their own lives, a test with such a level of accuracy will give many false positive and false negative results if used on the general population.

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.

A study published this month, and paid for by Sequenom, found that the company's test has a false positive rate of 0.2 % (G. E. Palomaki et al..

Because ovarian cancer is relatively rare, occurring in approximately one out of every 2,500 women, a test with only 99 percent specificity would result in false - positive diagnoses for 25 women, leading to unnecessary and risky surgeries and procedures.

If you're testing a long shot, say with a 10 percent chance of being effective, the false positive risk for a P value of.05 is 76 percent.

But cost - benefit decisions, even as the price of Tc - 99m rises when supply shrinks, should include the cost of follow - up tests after a false - positive thallium scan, he urges.

Dr. Catalona, who was the first physician in the U.S. to run the phi test, added, «However, the problem is that higher levels of PSA can also be caused by a benign enlargement or inflammation of the prostate, leading to many false ‐ positives for cancer and ultimately unnecessarily invasive biopsies and an increased potential for patient harm.»

Results of a multi ‐ center clinical study found a 31 percent reduction in unnecessary biopsies due to false ‐ positives as a result of using the phi test.1

More work is needed to refine the tests so that they can detect tinier amounts of target molecule, and ensure the rates of false positives and negatives meet the standards required for diagnostic tests.

«Such a high rate of a false positives in this particular study was unexpected,» says Tandy - Connor, who believes that some of the discrepancies in the results can be explained by technical differences between the various testing methods used.

As the authors note, the blood test's» accuracy may be even higher as some of the «false positives» — healthy cases mischaracterized as AD — may be from subjects who are actually positive for pre-symptomatic manifestations of Alzheimer's.

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.

In an editorial also published in the July 1 issue of Annals of Internal Medicine, Dr. George Sawaya and Dr. Vanessa Jacoby of the Department of Obstetrics, Gynecology and Reproductive Sciences at the University of California, San Francisco write, «The pelvic examination has held a prominent place in women's health for many decades and has come to be more of a ritual than an evidence - based practice... With the current state of evidence, clinicians who continue to offer the examination should at least be cognizant about the uncertainty of its benefits and its potential to cause harm through false - positive testing and the cascade of events it prompts.»

The test also had a handful of false positives, however, making its specificity 92 %.

The test is much less accurate for Edward syndrome and Patau syndrome, however, with respective detection rates of about 96 % and 92 % and a false positive rate of 0.26 %.

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.

As a result, blood tests may be detecting the presence of other mycobacterial infections; they may also produce false positives when antibody levels remain elevated after cases of TB have been treated.

Inappropriate testing for heart attacks increases the cost of treatment; increases the number of false positives, which could lead to further testing and unnecessary consultations; and adds to patient anxiety, said Dr. Anil Makam, Assistant Professor of Internal Medicine at UT Southwestern and first author of the study published today in JAMA Internal Medicine.

And skilled staff in good laboratories can almost always distinguish genuine infection from a false positive by carrying out an array of tests.

Additionally, false - positive results occurred, suggesting contaminations or wrong handling of the tests.

The new NIST human genome RMs increase the ability of DNA sequencing laboratories to be more confident in their reporting of true positives, false positives, true negatives and false negatives, and therefore, significantly improve genetic tests used for disease risk prediction, diagnosis, and progression tracking.

«This study has shown that the main advantage of cfDNA testing, compared with the combined test, is the substantial reduction in false positive rate.

Using a two - tiered testing strategy, the new test quickly identified all of the NPC patients with no false positives and no false negatives.

In addition to the huge hit to your wallet, there's also the potential harm of false positives, and just because a test has traditionally been done for a condition doesn't mean it's the best way to treat it.

It's highly likely, however, that you have fallen victim to a false positive — a result that, despite the accuracy of the test, erroneously yields an affirmative result that points toward illness.

«Good as gold: Researchers use gold nanoparticles to enhance the accuracy of biomedical tests, thereby eliminating false positive results.»

The assay — when compared against the performance of the conventional ELISA — has proved to be «up to clinical standards,» according to the researchers, with the added ability of removing the false positives, thereby eliminating the need for repeated testing.

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.

«Our method would be an effective low - cost addition to a battery of tests helping to lower the false positive rate since it provides 10 % better sensitivity and specificity than any other screening method, including Pap and HPV tests,» says Huang.

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).

Because of these false positives, a sequence of tests - as originally outlined by Alonso et al. (2004)- is employed, beginning with detailed revisions of the detection light - curves, and continuing for surviving candidates with follow - up observations, to either reject them from the list of planetary candidates or to verify their planetary nature.

We used a false discovery rate rather than standard significance measures to avoid an inflated false - positive rate as a consequence of the large number of hypothesis tests (42).

We discuss common correction schemes such as Bonferroni, Holm, Benjamini & Hochberg and Storey's q and show how they impact the false positive rate (FPR), false discovery rate (FDR) and power of a batch of tests.

Identification of those men at greatest risk for prostate cancer development and progression would provide a means of targeted screening, thereby reducing unnecessary testing, false positive tests, and the burden of overdiagnosis and over treatment.

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.

For models, such as SMR, where the distribution of the model parameters is unknown, permutation test and stability selection are typically used to control for false positives.