Sentences with phrase «matched population study»

[2] The only matched population study, comparing 1,046 homebirths with 1,046 hospital births, was published in 1977 by Dr. Lewis Mehl, a family physician and medical statistician.

Not exact matches

(Washington, D.C.: Committee on Education and the Workforce, February, 13, 2002), http://archives.republicans.edlabor.house.gov/archive/hearings/107th/eer/enronthree21302/kruse.htm Another study comparing a matched sample of ESOP versus non-ESOP firms in with similar industries and workforce sizes among closely held companies, again, using population data on all available US DOL data followed the ESOP firms before and after their adoption of the ESOP from 1988 to 1998 along with the matched firms and found that 20 % of the ESOP firms had a defined benefit plan before adopting their ESOP, and 10 years later, after adopting their ESOP, they had defined benefit plans five times more than non-ESOP firms), 33.3 % of ESOP firms had a 401 (k) plan before adopting their ESOP with 52.4 % 10 years later (five times more than non-ESOP firms), and 35.7 % of ESOP firms had a deferred profit - sharing plan before adopting their ESOP with 51.2 % 10 years later (five times more than non-ESOP firms).

The geographic and age distributions of the men who took part in the study closely match what is known about these populations.

Venneman et al 2009 were first to find unqualified proof of this long suspected fact having conducted a populations - based study of 333 infants who died of SIDS between 1998 and 2001 matched in age to 998 «control infants» born 4 to 6 weeks after the case infants.

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.

Although our study cohorts were closely matched on prognostic variables, we do not underestimate the degree of self - selection that takes place in a population of women choosing home birth.

Another interesting phenomenon from the study is that the youth gang population identified in the study didn't match the demographic profile from police.

They found that among people in treatment for drug and alcohol use, the overall rate of smoking was 84 percent, compared with a rate of 31 percent for members of the general population, matched for gender and year of study.

So, despite the fact that we have this first descriptive approach, more research needs to be done by incorporating new variables, by expanding the sample and by adapting the ranges of intensity of the population studied; while guaranteeing equality, that would enable us to complement the comparison with respect to the demands made on both genders when playing a football match.

«In our large population - based study of more than 6,000 adults with CAP and almost 30,000 matched controls, we found that CAP patients have high rates of long - term morbidity and mortality compared to those who have never had CAP, irrespective of their age.»

This latest study, which cross-linked 23,201 female cancer survivors from the Scottish Cancer Registry with hospital discharge records, revealed 6627 pregnancies among the cancer survivors when nearly 11,000 would have been expected in a comparable matched control group from the general population.

«We can see the huge genetic impact that the slave trade had on American populations and our data match historical records», said study author Dr Garrett Hellenthal from the UCL Genetics Institute, «The majority of African Americans have ancestry similar to the Yoruba people in West Africa, confirming that most African slaves came from this region.

«What this study does is look at where the most cost - effective yet untapped resources are likely to be when the last of these mandates culminates in 2025, and what it might cost to connect them to the best - matched population centers.»

The company's original tertiary target for the SCiStar study, after observing the safety and activity of AST - OPC1, was that 45 - 50 % of study subjects would recover at least 2 motor levels on at least one side at 12 months, which is approximately double the rate of spontaneous recovery expected based on a similarly matched population and published literature.

Our study of annelid development reveals a population of mesodermal cells that converge and extend along the ventral midline and express a combination of transcription factors, signaling molecules, and guidance factors that closely matches that of the vertebrate chordamesoderm.

This was a case control study comparing the eating habits of cancer patients with those of people matched for age, race, etc. from the general population.

The study population comprised the DCCT T1DM cohort (N = 1441) and a subset of the EDC cohort (n = 161) selected to match DCCT entry criteria.

The study's «matching» method compared charter schools to public schools that are likely to share the same neighborhood, same economic conditions, and the same population of students and parents.

From the dataset of 18,968 education agencies, 7,233 agencies were removed that did not match the study population criteria, for a total of 11,735 districts in the sample frame.

A recently published study shows that adoption and targeted TNR (matching a target population to available resources in order to achieve a high sterilization rate, which is necessary to achieve population stabilization and reduction) resulted in a 66 % reduction in shelter cat impoundment over 2 years.

The results of these studies must be interpreted with caution, since the population in these papers were not random or age matched.

The study took random samples from populations of different sizes and then compared the samples to the whole population to see how many records were identifiable, that is, matched uniquely to a unique person in the whole population on the basis of 9 demographic variables: Age (85 categories), race (4 categories), gender (2 categories), ethnicity (2 categories), marital status (3 categories), income (3 categories), employment status (2 categories), working class (4 categories), and occupation (42 categories).

Also, we used objective approaches to quantify neighbourhood attributes that allowed us to partially control for potential reverse causality due to depressed individuals tending to exhibit negative cognitive bias resulting in negative thoughts and perceptions.65 Residential self - selection bias is likely to be a trivial source of reverse causality in this study because Hong Kong's high levels of population density (6760 people / km2) and low percentage of developed land (less than 25 %) 66 limit most residents» choice of accommodation and 37 % of Hong Kong older adults live in public rental housing.67 Given the satisfactory response rate and the level of similarity in depressive symptoms and sociodemographic characteristics of participants recruited from two types of recruitment centres, the findings from this study are likely to be generalisable to the population of Chinese Hong Kong older adults matching the study eligibility criteria and other populations of older adults living in similar ultra-dense metropolises of Southeast Asia.

We will use two comparison groups for this analysis: (1) children recorded in the KiDS database as eligible for the Brighter Futures Program who did not participate; and (2) a propensity - matched comparison group from the whole study population, matched on individual - level characteristics similar to those outlined in the methods to address objectives 1 and 2.

Similarly, the National Child Development Study in the UK, which has followed up a large general population sample of children born in 1958, found that children from single - parent families were at greater risk for psychological problems than a matched group of children from intact families not only in childhood (Ferri, 1976) but also in early adulthood (Chase - Lansdale et al., 1995) and middle age (Elliot and Vaitilingam, 2008).

Therefore, this study investigated temperament traits and their associations with internalizing and externalizing problem behavior in young clinically referred children and compared the strenghts of these associations to an age and gender matched general population sample.