Sentences with phrase «representative study sample»

«This is a representative study sample, and the study results can therefore be generalized to people in the Western world, «says Oluf Pedersen, Professor and Scientific Director at the Faculty of Health and Medical Sciences, University of Copenhagen.

Not exact matches

There are no controls for gender in the study, although the sample is representative of the real world, with fewer women on the list.

One of the things young statistics students are supposed to learn is that results only count to the degree that your sample is representative of the larger group you study.

The telephone survey of a representative sample of approximately 3,000 Americans was conducted as part of a broader study of people in the 27 member states of the European Union and in Brazil, China, Croatia, Iceland, India, Israel, Norway, Russia, Switzerland, Turkey, the United States, Japan and South Korea in the summer of 2012 on behalf of the European Commission.

Of course, our study has limitations too, including that we could not be certain about how fully representative it was because not everyone in the Gallup sample allowed us access to their Facebook data.

But this 1990 study was actually based on a sample that was apparently distorted by volunteer bias and hence not representative of homosexual persons in general.

One study revealed that in a representative sample of 2,460 Americans, persons with more education were more likely to seek out a clergyman, and regular church members were also quicker to call on their pastor (54 percent among Protestants and 52 percent among Catholics)(Gerald Gurin, Americans View Their Mental Health, p. 335.)

Over the past ten years, several institutes that study public opinion have regularly asked representative samples of the population of those over eighteen years of age whether they favored or opposed homosexual marriage and adoption of children by same - sex couples.

Over the last ten years, several institutes that study public opinion have regularly asked representative samples of the population of those over eighteen years of age whether they favored or opposed homosexual marriage and adoption of children by same - sex couples.

Days after the report was released, the NFL released an official statement acknowledging the findings, but also suggesting that they may not be representative of all of the league's players: «The report doesn't confirm that the condition is common in all football players; it reflects high occurrence in samples at the Boston brain bank that studies CTE,» they wrote.

In its latest study published in a special section of the Journal of AOAC International focusing on food allergens and gluten, GIG said obtaining representative test samples for antibody - based testing (traditional way for testing gluten) is challenging when analyzing whole grains for gluten.

Drawing material from the National Education Longitudinal Study of 1988 (NELS - 88) and tracking a representative sample of students who were in 10th grade in 1990 and 12th grade in 1992, to see what was happening in their lives in 2000, the following was discovered in comparing high school athletes to non-athletes.

Moreover, our intervention sites were hospitals and affiliated polyclinics matched on a number of characteristics including geographical region and urban vs rural status, and the study sample is representative of general population of Belarus.

With respect to potential sources of bias in the study sample, the initial cohort through which these women were identified is a self - selected population and may not be representative of all women who use fluoxetine during pregnancy.

Some of these studies involved large representative samples from the United States; 2 some studies controlled for potential confounders, such as parental stress3 and socioeconomic status; 4 and some studies examined the potential of parental reasoning to moderate the association between physical punishment and child aggression.5 Virtually without exception, these studies found that physical punishment was associated with higher levels of aggression against parents, siblings, peers and spouses.

Participants were identified from a nationally representative consumer panel of more than 500,000 households in the United States.16 Compared with a nationally representative sample, participants in the Infant Feeding and Practices Study II were more likely to be white, middle class, and employed women.

Nevertheless, the initial study was viewed by AAAS as a useful step toward development of a more scientifically rigorous and representative international survey that would enable generalization beyond the sample completing the questionnaire.

These findings highlight the importance of systematic study of diagnostic criteria in representative samples of the general population.

The paper studied 20 discharges of plasma chosen as a representative sample of those created in PPPL's National Spherical Torus Experiment (NSTX) prior to its recent upgrade.

The study was based on the 1997 National Longitudinal Survey of Youth, a national representative sample of nearly 9,000 youth between the ages of 12 and 16 who were tracked and interviewed annually until their early twenties.

Loyola researchers studied vitamin D data from a nationally representative sample of 2,877 U.S. children and adolescents ages 6 to 18 who participated in the National Health and Nutrition Examination Survey.

Waber and her colleagues at hospitals in five other cities screened thousands of children in order to get a sample that was representative of the diverse demographics of the U.S. Study participants could not have behavioral or cognitive abnormalities or any risk of developing a mental or neurological disorder.

Data were drawn from a representative sample of more than 22,000 Canadians, the 2012 Canadian Community Health Study: Mental Health.

«Our study is the first to examine enforcement actions for alcohol laws by campus police and security agencies in a large, nationally representative sample of colleges,» said Nelson.

One recent study (pdf) found that among a representative sample of U.S. science students, those who said their science teachers had them read textbooks more often had higher test scores.

The seniors were part of an ongoing longitudinal study funded by the National Institute on Aging (NIA), which surveys a representative sample of 20,000 older adults in the U.S. every two years.

The studies varied widely in how recent they were, how nationally representative they were, and by their sample size, Balk and his co-authors acknowledged.

The study examined a nationally representative sample of high school students.

«Accordingly, we examined the effects of allergic disease on respiratory health in two sets of patients with COPD, one a nationally representative sample of 1,381 COPD patients from the National Health and Nutrition Survey III (NHANES III) and the other a cohort of 77 former smokers with COPD from a study of the effects of endotoxin exposure on health status.»

The study included 17,897 respondents from the National Health Interview Survey (NHIS), administered by the U.S. government since 1957 to examine a nationally representative sample of U.S. households about health and sociodemographic variables.

Studies should be longitudinal — following women over time — and include larger, more representative samples.

The study by University of Florida and Research Triangle Park researchers is the first to look at sleep difficulty by smoking status in a large population - based, nationally representative sample.

They asked a nationally representative sample of over 1,800 Americans to say how much they agree with various statements, and compared their answers to a small group of experts — professors, polled at a psychology conference, who had been studying memory for more than 10 years.

A new study has found that sleep difficulties and hours of sleep can predict a number of specific problems, including binge drinking, driving under the influence of alcohol, and risky sexual behavior in a nationally representative sample.

«More studies that explore both the short - and long - term infant and maternal outcomes of these findings are needed, in nationally representative samples, to optimize clinical care.»

The study of such phenomena in optics offers the advantage of taking place on very short timescales, thus making it possible to measure a representative sample of events and to reliably characterize its statistical properties.

«Our study examined a nationally representative sample of males and confirmed strong links between problematic gambling and violent behaviours, and also showed links with non-problem gambling.

The work, which analyzed a nationally representative sample of nearly 2,000 couples, is the first study to consider how the discrimination experiences of both people in a relationship are associated with their health.

Langa and colleagues used data and cognitive test results from ISR's long - term Health and Retirement Study to evaluate trends from 2000 to 2012 among a nationally representative sample of more than 21,000 people age 65 or over.

The researchers used the Early Childhood Longitudinal Study, Kindergarten Class 1998 - 99 (ECLS - K), which followed a nationally representative sample of kindergarteners from the 1998 - 1999 school year through 2006 - 2007, at which time the majority of participants were enrolled in 8th grade.

Most parents in the 500 Family Study are highly educated, employed in professional occupations, and work, on average, longer hours and report higher earnings than do middle - class families in other, nationally representative samples.

It relies on data on nearly 14,000 individuals from the National Longitudinal Study of Adolescent Health (Add Health), which began tracking a nationally representative sample of youths in 1995 when they were in seventh through twelfth grades and 11 to 19 - years - old.

This is the first study to examine the association between the risk of complications after surgery and the rate of unplanned re-hospitalizations in a large, nationally representative sample of patients undergoing general surgery.

The study examined the longitudinal association between depression and subsequent violence from three representative samples in the Netherlands, United Kingdom and Finland.

The study included a nationally representative 20 percent sample of Medicare fee - for - service beneficiaries who died in 2011.

In a countrywide representative sample, the study assessed almost 1,500 Guatemalans, men and women between 18 and 65 years old.

Given that just 36 fish were sampled, it is difficult to know for sure whether the proportion of mislabeled species — 8 % in this study — is truly representative.

A study concerning the evolution of mitochondrial DNA, performed by researchers from the Universitat Autònoma de Barcelona (UAB), has allowed to determine the frequency and pattern of heteroplasmy in the complete mitochondrial genome using a representative sample of the European population.

Investigators looked at data from a large, nationally representative sample of preschool - aged children — the Early Childhood Longitudinal Study - Birth Cohort, conducted by the National Center for Education Statistics.

90 children (49 boys and 41 girls) from four primary schools participated in this study which was limited by the fact that the sample size is not representative.