Sentences with phrase «few limited studies»

But because the evidence supporting this claim comes from just a few limited studies, and because other studies contradict some of that evidence, it would be unwise to conclude that confounding is not a problem.

Some neuroscientists maintain that Fast ForWord is a prime example of what happens in the brain - based education industry: A few limited studies with a neuroscientific basis are used to underscore decades of marketing.

Not exact matches

Although gentrification is changing most every major city, «the really spectacular cases seem to be limited to relatively few,» the study notes.

In Grant's documented studies, meeting the very people you help is the greatest motivator, even if limited to a few minutes.

But it was a very unsatisfying attempt — to have weighty theological questions determined by delegates who came together for a few days with little prior study of the issues, who were sometimes inclined to suppose that such questions admitted of «yes» or «no» answers, and who passed judgment after rather limited opportunity for discussion and debate.

It limits the divine nature of Scripture to some non-existent manuscripts, and restricts the accurate understanding of Scripture to a few scholarly elites who study Greek and Hebrew while shut away from the rest of the world, and then tell all of us who are out in the world, how wrong and ignorant we are about what the Bible really means.

There appear to be no studies of children brought up by two male parents, and the few studies purporting to show that children with two lesbian mothers are in no way disadvantaged are typically flawed: they are taken from limited samples, have not followed the children's behaviour through time, and have generally been compiled solely on the lesbian parents» opinions.

«We studied how Swansea played, how defensively sound they were and how they limited Arsenal to very few chances.

Two of the Purdue studies [36,37] suggested that it might be possible to reduce risk of brain trauma by gradually increasing the amount of contact in the football pre-season to allow time for players» brains to adjust, and one, by finding that players who sustained more than 50 hits per game, were much more likely than those who sustained fewer hits to be «flagged» by ImPACT and / or fMRI results as having neurocognitive deficits or altered brain activity, suggested that players be limited to a certain number of plays per game (a hard rule to implement, given the prevalence of two - way players in the high school game).

A few longitudinal prospective studies provide rigorous insight but often at the expense of simplification of concepts (variables) in a limited number of countries.

NEW YORK (Reuters Health)- High school kids in California, a state that limits the junk food sold in vending machines, eat fewer calories in school than kids in states without such regulations, according to a new study.

Previous studies have found that a few TNCs own large chunks of the world's economy, but they included only a limited number of companies and omitted indirect ownerships, so could not say how this affected the global economy — whether it made it more or less stable, for instance.

The study was conducted in Jena, Germany, a city with 100,000 residents and only a few days over the last several years during which concentrations of some air pollutants exceeded EU daily limits.

The researchers caution that their study was limited by the relatively few locations nationwide that routinely monitor particulate matter.

According to the researchers, the limits of spare capacity have been studied in very few other species, with most work focused on several varieties of snakes.

However, some caution in the interpretation of the results is necessary, as underlined in an accompanying editorial by Salvatore Petta, MD, PhD, of the Section of Gastroenterology and Hepatology, Di.Bi.M.I.S., University of Palermo, Italy, and Giulio Marchesini, MD, of the Department of Medical and Surgical Sciences (DIMEC), «Alma Mater» University, Bologna, Italy., In fact, the study included only an elderly Caucasian population and there were few participants in the no - coffee or no - tea control groups, which limit a straightforward conclusion about the effect of coffee and tea on the liver..

The method is usually very time consuming and the results are often limited to very few or even a single study subject.

A study by UK - based Critical Limited, a consulting company, shows that while the number of biotech companies in Europe and the United States is almost equal, European companies are much smaller and have very few products in later stages.

Nevertheless, as Tobias says, it is still ``... a field beset with relatively few facts but many theories... The story of early hominid brains has to be read from carefully dated, well identified, fossilised calvariae, or from endocranial casts formed within them... Such materials confine the Hercule Poirot, who would read «the little grey cells» of fossil hominids, to statements about the size, shape and surface impressions... of ancient brains...» The other major limiting factor at the moment is the lack of suitable fossil skulls for such studies.

Earlier studies had proposed that Y chromosome diversity is limited because only a few stallions were tamed and bred into domestic horses about 5,500 years ago.

Very few studies on screening for other gynecologic conditions with pelvic examination alone have been conducted, and the USPSTF found that these studies have limited generalizability to the current population of asymptomatic women seen in primary care settings in the United States.

So that leads me to the next question: How have changes in technology in the past few years helped you in searching the limits of your knowledge about what you study?

Bone marrow biopsies often produce limited numbers of tumor cells to test — as few as 50,000 tumor cells in this study — but for this technique that is enough to test many different drugs and drug combinations.

This makes it very difficult to accurately predict weather changes more than a few days in advance, though weather forecasters are continually working to extend this limit through the scientific study of weather, meteorology.

Janka seemed to work nonstop, his ferocious drive coexisting with a persistent fear: Because he was one of only a handful working in what was then a limited field of study, Janka worried that by the time he completed his doctorate, he'd be a 30 - something with few job prospects.

Studies that specifically examine whether cannabis can substitute for opioids in providing pain relief have been limited to just a few hundred patients at most.

«Past studies that confirmed Bergmann's rule were mostly looking at just a few species at a time, over only small areas, or were data limited,» says Riemer.

While most urine samples collected from about 200 people in Huepetuhe last year showed mercury levels below the World Health Organization limit for occupational exposure, a few were extremely high, according to Dr. Jonh Astete, who coordinated the study by Peru's National Institute of Health.

«While a few studies have analyzed the associations of both air quality and health over a long period, they were typically limited to analyses of a specific air pollutant or a couple of pollutants,» Lyerly said.

Interpretation of neutrophil studies is limited by the fact that they have fewer mitochondria than muscle cells or other types of blood cells.

Here, a few: Limit those happy hours Heavy drinkers have a higher risk of developing the disease, according to a study from the Sylvester Comprehensive Cancer Center at the University of Miami's Miller School of Medicine.

One reason is that the study was fairly short - term, and there were few cancer cases, which limited the researchers» ability to detect a protective effect.

We are culturally very attached to a «no pain, no gain» mentality when it comes to health and success, yet studies show that individuals with greater levels of self - compassion actually demonstrate less motivational anxiety and use of fewer self - limiting behaviors like procrastination.

The limited reports of complications arising from use of the modified Atkins diet (MAD) or low glycaemic index treatment suggest fewer and less serious adverse events when these more liberal modified diets are used (32, 33, 34, 35), although a prospective review of 6 MAD studies found 13 % of 92 children and adults discontinued the diet due to intolerance or side effects (36).

While there are a limited few studies that seem to find no benefit of HMB, the overall consensus of these studies is that creatine and HMB combined work together to increase strength and also increase lean muscle mass.

But then again, we should appreciate that studies are few and far between and tend to be limited in scope.

Whereas enthusiasm for fasting is increasing, clinical relevance remains low because of insufficient human data, including almost nonexistent controlled trials (21, 33 — 36), few clinical outcomes studies (37, 38), lack of correction for inflated type I error rates from multiple hypothesis tests, and limited safety data (39 — 41).

In addition, these studies capture only the most direct impacts of the desegregation program and are limited to a few interventions that may not be typical.

Experiments can not faithfully represent a real world characterized by multivariate, nonlinear (and often reciprocal) causal relationships Moreover, few education researchers have much difficulty detailing contingencies likely to limit the effectiveness of a proposed reform that were never part of a study's design.

Our study is not limited by small sample sizes or only a few years of outcome data.

Not much has changed during the last decade in terms of the limited amount of rigorous research, although a few more studies have been conducted.

«The findings suggest that while teachers and leaders at all levels of JCPS articulate the importance of focusing on (limited English proficient) students, very few can articulate a specific vision or set goals for (their) growth,» the study noted in its recommendations.

Using nine specific quality benchmarks, including things like whether teachers had specialized training in early childhood education, if the maximum class size was 20 students or fewer and what the student to staff ratio was, Erin Baumgartner found that none of the 50 campuses included in the study met all nine of the quality benchmarks and that students of limited English proficiency were less likely to be enrolled in pre-kindergarten programs with six or more quality indicators.

According to their descriptions, nerds focused on their studies, spent a lot of time reading and in the library, had limited social circles, participated in few activities, and worked all the time.

He summed up the takeaways in his post, «The last hardcover» which merits more rumination (preferably with several friends including an author, a publisher, and editor, an agent and a bottle of eighteen year old Laphroaig,) but absent the minds and the bottle of Scotch at 9:00 am in my study, I'll limit myself to an invitation and a few amuse - gueules.

There were four studies done a few years ago that showed 80 percent of «limited ingredient» kibbles (prescription and over-the-counter) were contaminated with proteins that were not listed on the label.

Although few studies about the numbers of animals entering shelters and the numbers of healthy animals euthanized in shelters have been done and those that are available depend on a limited number of survey responses, all indications are that fewer dogs are entering animal shelters, more of the dogs that are entering shelters are leaving for new homes, and there is actually a shortage of puppies and small dogs in some areas of the country.

The assumption was that the limiting factor was the formation of nanosized clusters, but the folks who study CCNs know that there are more than enough nanosized little things in the air from dust, etc, that a few more don't matter.

In fact there are only a very few for which the trend lies outside the confidence limits for the period under study.

Yet, anecdotal information aside, there are very, very few studies of the internal operation of such panels (LaMont 2010), and for evaluating the effectiveness of IPCC's approach, the community has only the very limited literature matching its projections over the past 20 years to actual climate outcomes (Rahmstorf et al. 2007; Pielke 2008).