Sentences with phrase «different study populations»

The hypotheses were then tested empirically in a variety of different study populations, including U.S. military veterans of the Vietnam war, college fraternity and sorority members who had undergone hazing, English Premier League football fans, martial arts practitioners of Brazilian Jiu Jitsu who sometimes use painful belt - whipping, and twins to examine the level of fusion.

Not exact matches

The IARC acknowledges the difficulty of determining causality, but their report concludes that, «the consistent associations of colorectal cancer with consumption of processed meat across studies in different populations, which make chance, bias, and confounding unlikely as explanations.»

In a new study published on 19 February in the open access journal PLOS Biology, researchers show that similar — or even identical — mutations can occur during diversification in completely separate populations of E. coli evolving in different environments over more than 1000 generations.

In a new study published on 19 February in the open access journal PLOS Biology, researchers show that similar - or even identical - mutations can occur during diversification in completely separate populations of E. coli evolving in different environments over more than 1000 generations.

But without multiple mutually corroborating & very rigorous population studies to determine strong associations among different variables, one can't speak confidently on what causes what — and this in a discipline, psychology, already fraught with poorly designed and low - statistical - rigor studies.

Planned variation studies, in which program components, content, home visitor training, or dosage of services is varied, can identify core dimensions of implementation that are critical for achieving program impacts, as well as dimensions that could be adapted for different contexts and populations without threatening the program's effectiveness.

More comparative studies and impact evaluations are needed within countries to determine which strategies are most effective at promoting and supporting EBF with different populations.

Quiz Ref IDOur conclusions are limited by our study population, which was selected from a single cohort from the United States and sampled at a single time point; thus, our findings may not be entirely generalizable to populations elsewhere or to different points in infant development.

Mr. Lippman said last week he was not beginning the commission with a particular outcome in mind, but intended only to study the population, see if it could be shrunk, and determine whether a different model is feasible.

While there was some variation between the populations that were studied, such as between men and women, people living in different regions, or people with different risk factors, the researchers found that nut consumption was associated with a reduction in disease risk across most of them.

Eighty percent of a population of Burmese long - tailed macaques on an island in southern Thailand use stone and shell tools to crack open seafood, and do so using 17 different action patterns, according to a study published May 13, 2015 in the open - access journal PLOS ONE by Amanda Tan from Nanyang Technological University, Singapore, and colleagues, under an 8 year field project led by Michael D Gumert, also from NTU.

The authors caution that further study and replication of their results in different populations is needed to verify their model before it will be useful for individual genetic tests — or before longevity «cocktails» are created.

«These studies from AAIC 2014 underscore the need to fund larger, longer - term studies in different and diverse populations to enable us to develop helpful «prescriptions» for lifestyle change — for example, which foods to eat and avoid, how much physical activity and what types — and to learn more specifically about how Alzheimer's and dementia risk factors change as we age,» Snyder added.

Scientists in the six - site study analyzed the tissue in 41 rheumatoid arthritis patients, separating out different immune cell populations.

Although the new JNCI study did not analyze individual cell phone usage — preferring instead to take a broader look at the population at large — other research has examined subgroups of cell phone users to try to discern different trends among more frequent use.

Now, a team of scientists at the Icahn School of Medicine at Mount Sinai have developed the Just EGFP Death - Inducing T - cell, or JEDI T - cells, which enable the visualization of T - cell antigens, allowing researchers to study T - cell interactions with different cell types, model disease states, and finally determine the functions of otherwise poorly characterized cell populations.

They then compared their predictions with field studies of more than 1000 lizard populations on four different continents.

Human epidermal equivalents representing different types of skin could also be grown, depending on the source of the stem cells used, and could thus be tailored to study a range of skin conditions and sensitivities in different populations.»

According to an extensive genomic study, the two types of population result from tens of thousands of years of adaptation to their different environments.

Next, they used a technique called fluorescence - activated cell sorting to separate out the newly differentiated retinal ganglion cells from a mixture of different cells into a highly purified cell population for study.

That trend is problematic considering that African - Americans — the most at - risk population for multiple myeloma — have different genetics that can affect how this type of cancer progresses and what kind of targeted therapies are most effective, said Zarko Manojlovic, lead author of the study.

Human epidemiology studies in populations in different geographic locations, as well as clinical and molecular studies, show that Merkel cell polyomavirus causes Merkel cell carcinoma.

Researchers in this study used budding yeast, creating populations of cells with more than 10 million different randomised genomes, to investigate how genetic diversity affected resistance.

Overall, the study's data from mitochondrial DNA — different from nuclear DNA in that it helps scientists trace maternal lineages — reveal that population structure in humpback whales is largely driven by female whales that return annually to the same breeding grounds and by the early experience of calves that accompany their mothers on their first round - trip migration to the feeding grounds.

This may be due to different study designs, population variation in vitamin D levels, or a failure to account for the combined effect of exposure and underlying genetic variation in the vitamin D pathway.

So researchers may have to duplicate their studies in different populations to take account of important geographical variations.

«Some of the students in our study didn't know that what they were experiencing was different from the rest of the population, and it blew their minds,» says Jared Medina, assistant professor in UD's Department of Psychological and Brain Sciences.

Hardy went to GS6 looking for possible international collaborators to continue her studies of breast cancer across different populations.

The study is the first to look at these different biological markers, as well has how the gene's impact on dopamine production specifically affects Caucasian populations.

The study's researchers use DALYs, or disability - adjusted life years, to compare the health of different populations and health conditions across time.

The researchers looked at a total of 142 publications from 95 different population studies that studied the relationship between consumption of fruits and vegetables and the subsequent risk of chronic diseases.

The research teams, led by Nima Sharifi, M.D., of the Cleveland Clinic Lerner Research Institute, studied the role of the HSD3B1 (1245C) genetic variant in two different prostate cancer patient populations, following androgen deprivation therapy (ADT).

In an attempt to answer the question of whether genes that show high levels of variability across different species could also be useful in population - level evolutionary studies, scientists in Brazil, Singapore, and the United Kingdom teamed up to test the utility of numerous genes previously found to be useful in inferring relationships of cactus species.

The study, recently published in the journal Ecology Letters, reveals that contrary to expectation, the massive glaciers that expanded and contracted across the region affected animal populations in different ways at different times.

With no meat, milk, eggs, fish, or cheese in our diets, the U.S. population would not receive enough of several different essential dietary nutrients from the foods they eat, according to the study results.

«We found that the relatively homogeneous population seen across western Eurasia today, including Europe and the Near East, used to be a highly substructured collection of people who were as different from one another as present - day Europeans are from East Asians,» said David Reich, professor of genetics at Harvard Medical School and co-senior author of the study.

Co-author, Eva Phillip, from the University of Kiel, says: «The study shows that it is important to investigate different ages of a population to understand population wide changes and responses.

If we take as the reference the values relating to men in order to compare both genders, as men are faster and have more stamina, we might be led to believe that women «don't give all they've got,» but «we are in no doubt that women do give the maximum; so if this is relativized to the actual values of the population being studied, the results would be different with respect to the physical demands involved in women's soccer,» points out Castellano.

In a study appearing in the journal PLOS ONE, researchers at The Ohio State University and their colleagues have demonstrated how two separate effects of climate change combine to destabilize different populations of coral microbes — that is, unbalance the natural coral «microbiome» — opening the door for bad bacteria to overpopulate corals» mucus and their bodies as a whole.

This study compared 126 different measures of working poverty using 2013 population data.

Their recent study, which appears as the cover article in the May issue of Cancer Research, shows that mathematical models can be used to predict how different tumor cell populations interact with each other and respond to a changing environment.

«Going back to study the wild population can give you a different mechanism or different genes,» says Sandoval Guzmán.

Malin Pinsky, an ecologist at Rutgers University who studies population dynamics of coastal marine species and who was not involved in the research, described the study as significant because of its unusually large scope, as well as its focus on different fish life stages.

Now a team of researchers has confirmed this by studying female diet and male ornament variation in different populations of the fish.

«Killer whales have been thought of by some as something like the poster child» for the process, «because there are multiple genetically distinct populations [which have not yet been formally described as separate species] with different prey preferences in the North Pacific and Antarctic,» says Phillip Morin, a cetacean biologist at the Southwest Fisheries Science Center in San Diego, California, who was not involved in the new study.

Michaela Hau, an evolutionary physiologist at the Max Planck Institute for Ornithology in Germany, says that the new study is «immensely valuable» because it was carried out with a large number of baboons who lived in the wild rather than a captive population, which might be suffering from different kinds of stresses due to captivity, social isolation, or variable food quality.

In its study, the team of scientists explains that species with low habitat requirements depend on the exchange between different populations.

It could therefore not be excluded that differences in the treatment results were caused by differences between the study populations and not by the different drugs used.

The researchers also looked at how the diseases spread and studied genetic similarities between DWV in different pollinator populations.

«The strengths of our study are that we have confirmed these results in a completely different animal group, and that our data comes from wild populations,» she concludes.