Sentences with phrase «high false positive»

Many of the scales demonstrated weak psychometrics in at least one of the following ways: (a) lack of psychometric data [i.e., reliability and / or validity; e.g., HFQ, MASC, PBS, Social Adjustment Scale - Self - Report (SAS - SR) and all perceived self - esteem and self - concept scales], (b) items that fall on more than one subscale (e.g., CBCL - 1991 version), (c) low alpha coefficients (e.g., below.60) for some subscales, which calls into question the utility of using these subscales in research and clinical work (e.g., HFQ, MMPI - A, CBCL - 1991 version, BASC, PSPCSAYC), (d) high correlations between subscales (e.g., PANAS - C), (e) lack of clarity regarding clinically - relevant cut - off scores, yielding high false positive and false negative rates (e.g., CES - D, CDI) and an inability to distinguish between minor (i.e., subclinical) and major (i.e., clinical) «cases» of a disorder (e.g., depression; CDI, BDI), (f) lack of correspondence between items and DSM criteria (e.g., CBCL - 1991 version, CDI, BDI, CES - D, (g) a factor structure that lacks clarity across studies (e.g., PSPCSAYC, CASI; although the factor structure is often difficult to assess in studies of pediatric populations, given the small sample sizes), (h) low inter-rater reliability for interview and observational methods (e.g., CGAS), (i) low correlations between respondents such as child, parent, teacher [e.g., BASC, PSPCSAYC, CSI, FSSC - R, SCARED, Connors Ratings Scales - Revised (CRS - R)-RSB-, (j) the inclusion of somatic or physical symptom items on mental health subscales (e.g., CBCL), which is a problem when conducting studies of children with pediatric physical conditions because physical symptoms may be a feature of the condition rather than an indicator of a mental health problem, (k) high correlations with measures of social desirability, which is particularly problematic for the self - related rating scales and for child - report scales more generally, and (l) content validity problems (e.g., the RCMAS is a measure of anxiety, but contains items that tap mood, attention, peer interactions, and impulsivity).

3 studies that assessed screening showed limited ability to predict future maltreatment because of high false positive results.

They say fraudsters have now developed tools to circumvent such techniques, and these methods even have a high false positive rate, meaning dating sites are falsely identifying good users as bad.

(28) However, other research suggests that this may be an overestimation, due to the high false positive rate associated with the lactulose breath test used to diagnose SIBO.

Since satellites are transient and sporadic events, we used the Hubble Frontier Fields (HFF) dataset which is manually checked for satellite trails has been used as a truth set to verify that the method in this document does a complete job without a high false positive rate.

Researchers believe there are two explanations for the very high false positive results from the first stage of the screening process.

The screening has a high false positive rate because PSA levels rise from nonmalignant prostate growth.

A doula can remind you of the high false positive rate for EFM and remind you to ask your caregiver about options for verifying the diagnosis (such as using an internal monitor or stimulating the baby's scalp).

Although studies have indicated that the monitor has a high false positive rate (says the baby is in distress when he is not), the mother who has been told her baby is in distress may be too concerned to remember that it may not be real.

Not exact matches

As with all technical indicators, an overbought or oversold indicator may be followed by higher highs or lower lows, giving the impression of a false negative or false positive.

The price of being tactical are the inevitable false positives, where you sell only to buy back in at higher prices.

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»).

While other feed grade rice protein manufacturers resorted to adding Melamine in 2005 to achieve a false positive protein measurement and falsely convince the animal feed arena to meet the Axiom specification, Axiom Foods remained dedicated to proprietary, chemical - free processes and certified organic product development while maintaining protein levels consistently higher than any other competitor.

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).

First, the number of false positive results is rather high and varies widely by state.

NIPT screens for more chromosomal conditions than other screening options, as well as offers the highest detection rate and lowest false positive rate for Down syndrome.

There are different ways to test for Down syndrome screening but the Integrated Test is the most specific, has the highest detection rate and a low false - positive rate.

It does have a high incidence of false positives and can have a false negative.

The false positive rate is much higher than the false negative rate of existing gun laws.

That means the 1 % false positive rate will likely be higher in less healthy populations, notes proteomics researcher Lance Liotta of George Mason University in Manassas, Virginia.

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.»

It must be sensitive enough to highlight potential problems, but not so broad that it generates high numbers of false - positive results, said Dr. Dean Foti, a clinical assistant professor of neurology at the University of British Columbia.

«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.

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

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.

«The finding that MBI substantially increases detection rates of invasive cancers in dense breasts without an unacceptably high increase in false positive findings has important implications for breast cancer screening decisions, particularly as 20 states now require mammography facilities to notify women about breast density and encourage discussion of supplemental screening options,» says Dr. Rhodes.

«As we look at lessons learned from this outbreak, the high false - positive screening rate and other delays in diagnosis may have resulted in unprotected exposure of frontline staff.

Even if the false - positive rate for each incoming spike is as high as 1 in 2, the collective false - positive rate for 100 spikes arriving at the same time is considerably less.

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.

«Hydrogen peroxide explosives are a challenge because they are dangerous, but there are so many personal hygiene products that have hydrogen peroxide in them that the false positive rate is very high,» Brotherton said.

But the dollar cost, and personal cost, can be much higher for those who receive false positives and unnecessary biopsies.

At the same time, there are a high number of false positives associated with screening programmes, meaning healthy people are inappropriately identified as having a potential condition, leading to overdiagnosis and overtreatment.

The older group also had a slightly higher rate of false - positive screening results.

The high - amplitude region of depths over 5 % is not covered by candidates in the follow - up program, because the eclipse depth as such identifies these cases as false positives in planet finding, excluding them automatically from follow - up observations.

We combined photometry, medium / high - resolution spectroscopy, adaptive optics / speckle imaging and archival survey images to rule out any false positive detection scenarios, validate the planet, and further characterize the system.

For eleven of them (KOI - 0571.05, 1422.04, 1422.05, 2529.02, 3255.01, 3284.01, 4005.01, 4087.01, 4622.01, 4742.01, and 4745.01) we show that the likelihood they are true planets is far greater than that of a false positive, to a confidence level of 99.73 % (3 sigma) or higher.

We distill these candidates into sets of 104 validated planets (57 in multi-planet systems), 30 false positives, and 63 remaining candidat... ▽ More We present 197 planet candidates discovered using data from the first year of the NASA K2 mission (Campaigns 0 - 4), along with the results of an intensive program of photometric analyses, stellar spectroscopy, high - resolution imaging, and statistical validation.

In order to identify false positives and confirm transiting exoplanets, we have assembled a follow - up network (KELT - FUN) to conduct imaging with higher spatial resolution, cadence, and photometric precision than the KELT telescopes, as well as spectroscopic observations of the candidate host stars.

The high rate of multiplicity combined with the low rate of identified false - positives indicates that the multiplanet systems contain very few false - positive signals due to other systems not gravitationally bound to the target star (Lissauer, J. J., et al., 2012, ApJ 750, 131).

Available data suggest few SNP alleles can pass the genome - wide multiple testing criteria and the false positive rate is very high.

Based on an analysis of the Kepler brightness measurements, along with high - resolution imaging and spectroscopy, Doppler spectroscopy, and (for 11 stars) asteroseismology, we establish low false - positive probabilities for all of the transiting planets (41 of 42 have a false - positive probability under 1 %), and we constrain their sizes and masses.

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.

Using these observations along with other constraints from high resolution imaging and spectroscopy we are able to exclude the vast majority of possible false positives.

The NPR story reported that another recent study found that the false - positive rate for lung CT (computerized tomography) is 33 percent among those who have had two screening tests — higher than the National Cancer Institute trial found.

However, given the large number of individuals that contributed to each RNA pool, it is unlikely that the genes for which we do detect differential expression represent false positives arising from high among - individual variance.

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.

The system passes a battery of tests for false positives, including reconnaissance spectroscopy, high - resolution imaging, and centroid motion.

On synthetic data, we show that BPT provides higher sensitivity in identifying relevant features from the SMR model than permutation test and stability selection, while retaining strong control on the false positive rate.

A high sensitivity score thus corresponds to a high hit rate and a low false positive rate.

Every several centuries Earth will experience these false alarms of high rates of temperature changes both positive and negative.