Sentences with phrase «high false negative»

The most common lab tests have a very high false negative rate, making diagnoses even more difficult.

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 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»).

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).

If you're very early in your pregnancy, than your hCG levels may not be high enough to be detected by a home pregnancy test, resulting in false negative pregnancy tests.

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.

When the results were compared with studies in the literature using standard radiocolloid tracers the researchers found that the SN biopsy using tilmanocept provided a high identification rate and low false negative rate for SNs, thus facilitating accurate prediction of the spread of the cancer.

The aim of firing this massive bank of laser beams would be to either heat a chamber sufficiently high — about 1029 degrees Kelvin — to create a false vacuum inside or compress a pair of spherical plates to within the Planck distance of each other, creating negative energy via the Casimir effect.

The high number of false negative results found in the study implies a risk that athletes who use rHuEpo will avoid detection and damage the fundamental goal of fair competition.

In addition, RNAi screens are also known to exhibit a high background, which can lead to both false negatives and the need for highly redundant libraries to ensure statistical significance.

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

Clinical examination and imaging technologies are critical elements for detecting and diagnosing breast cancer, yet the high rate of false positives and false negatives resulting from these approaches can significantly impact patient care.

In fact, as «The Pregnant Mathematician» points out, when the test is evaluated mathematically, there is both a high rate of false positives and false negatives in women who may actually have GD.

So if we're using these traditional labs, we have this high tendency towards false - neg — excuse me — false - negative.

Antibody tests can be specific but they have high rates of false negatives (you can have the infection without antibodies) and false positives (you may have cleared the infection but the antibodies are still around).

However, because porphyrins are easily destroyed, 60 the risk of false negatives is high unless the sample is handled carefully.

One cause of false - negative results is high breast density.

Included within this teacher PPT are 27 starters to revise high frequency vocabulary, grammar and essential exam topics ⁃ 2 false friend activities ⁃ Opposites match up ⁃ Gap fill - nouns in German ⁃ Dominoes - adjectives ⁃ Match up - negative expressions ⁃ Categorisation of irregular verbs in 6 tenses ⁃ Unscramble letters - reflexive verbs ⁃ Reading comprehension - leisure ⁃ Gap fill - possessive pronouns ⁃ Writing - house and home ⁃ Writing - free time ⁃ Categorisation - adjectives to describe personality ⁃ Town or countryside - arguments for and against ⁃ Ideal town conditional writing frame ⁃ Sentence match - directions ⁃ Reading comprehension - school timetable ⁃ Crossword - higher numbers ⁃ Writing / speaking - common questions with numbers ⁃ Writing - times ⁃ Word search - time phrases ⁃ Match up - question words ⁃ Word unscramble - restaurant vocabulary ⁃ Common questions ⁃ Opinion adjectives - fill in the missing vowels ⁃ Opinions - past, present or future?

The error associated with using initial performance to predict future performance appears to be quite high: the false negative rate is 68 percent.

If we wanted to reduce false negatives, thus limiting the potential harm to students of having ineffective teachers continue in the classroom, we might choose to set a higher bar, in the sense that we identify more teachers as ineffective initially.

The error associated with using initial performance to predict future performance appears to be quite high: only 32 percent of teachers classified as low - performing in math are in the lowest performance quintile in future years, meaning that the false negative rate is 68 percent.

While the false positive rate is very low, the false negative rate is likely to be quite high: very few truly low - performing teachers are flagged for targeted supports or dismissal.

Thus, the «false negative» rate for these classifications is probably high.

Some teachers who are not high - performing will be classified as such (false positives), while some teachers who are high - performing will not be classified as such (false negatives).

A likely explanation is that high self - esteem gives the person a false sense of invulnerability to negative consequences.

However, it is not a very sensitive means of heartworm detection in the cat (i.e., there is a high chance of false negative test results).

Although PCR testing methods offer promise, these techniques result in relatively high numbers of false - positive and false - negative results, so they are not routinely being recommended.

Diagnosis of canine dirofilariosis in animals which originate from a low - endemic region is difficult for 3 main reasons: 1) possible absence of circulating microfilariae (occult disease), 2) high frequency of a low number of adults, which in turn produces false negative results, using either ELISA or latex agglutination test, 3) possible false sero - positive results, due to cross-reaction with adult antigens of Dirofilaria (Nochtiella) repens (Schrey, 1996), the agent of subcutaneous dirofilariasis causing chronic pruritic dermatitis in dogs (Tarello, 1999).

ENVIRONMENTALISTS, those concerned about reducing harm to people and the earth, follow «THE MEDICAL MODEL» of avoiding false negatives (acting as if there is no problem, when indeed there is); that is, they do not need high certainty of a problem to start addressing it.

Apparently, since data such as the all time record HIGH Antarctic sea ice, advancing Arctic sea ice, slowing to non existent GMSL at less than 2 / mm annual (and negative in some recent years), flat to lower global temps for almost 2 decades, and all the myriads of other associated data... flatly, empirically, REFUTE this cadre of AGW grant leaching con artists pretending to do science with grossly false models....

I have rated the potential impact in the field as high, but I have to emphasise that this would be a strongly negative impact, as it does not clarify anything but puts up the (false) claim of some big inconsistency, where no consistency was to be expected in the first place.

Low power studies produce more false negative than high power studies.

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).

Megan distinguishes between a situational aspect of divorce, where parents under high stress exhibit negative behaviors, and that of divorces that involve Personality Divorces, False Allegations, and potentially toxic levels of Parental Alienation.