Sentences with phrase «in statistical studies»

In this statistical study, researchers ranked auto insurance companies in terms of the actual dollar amount of annual premiums written, which provided an indication of each company's total market share.

Not exact matches

To get a handle on causality in the relation of organizational form with company performance, many studies use before / after comparisons and various statistical corrections for endogeneity of company form.

In fact, there is no other gold study available that contains a comparable wealth of valuable statistical information in chart forIn fact, there is no other gold study available that contains a comparable wealth of valuable statistical information in chart forin chart form.

Using standard statistical methods, it was found that the average sales advantage for the ESOP firms in the study was $ 44,500, or an average of an 8.8 % sales per employee advantage over their non-ESOP counterparts in the same industry and of the same size; 2.)

Statistical studies of the frequency of sexual abuse of minors in the general population as well as statistics about abuse among other groups such as public school teachers lend support to MacRae's point.

Murray draws on those studies, but in Coming Apart, Fishtown, like Belmont, is shorthand for a statistical cohort: people with blue - collar or low - level office jobs and no academic degree more advanced than a high - school diploma.

If religious study issues in the conclusion that truth is found in statistical averages, I think one ought to go back and check one's assumptions.

Research into the role of the churches in community mental health may take two directions: (1) statistical studies, empirically designed, as to the effect of religious beliefs, membership in, and activities of, members of churches and synagogues, and (2) the effects of training in mental health principles and skills of clergymen and laymen in improving their effectiveness in religious behavior.

In microphysics Planck postulated in 1900 that electromagnetic energy is emitted in quantised forms and its study must rely on statistical probabilitiesinstead of classical lawIn microphysics Planck postulated in 1900 that electromagnetic energy is emitted in quantised forms and its study must rely on statistical probabilitiesinstead of classical lawin 1900 that electromagnetic energy is emitted in quantised forms and its study must rely on statistical probabilitiesinstead of classical lawin quantised forms and its study must rely on statistical probabilitiesinstead of classical laws.

The days (or the millennia) of every living form are by statistical reckoning ineluctably numbered; so much so that, using the scale of time furnished by the study of certain isotopes, it is beginning to be possible to calculate in millions of years the average life of a species.

The above studies do not exhaust the statistical research available for clarification of issues in religious broadcasting.

Similarly, there are only limited major statistical studies in the vast area of uses and effects of religious broadcasts.

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Objective To determine whether food industry sponsorship is associated with effect sizes, statistical significance of results, and conclusions of nutrition studies with findings that are favorable to the sponsor and, secondarily, to determine whether nutrition studies differ in their methodological quality depending on whether they are industry sponsored.

Some like to stick a pin in the race card at random, others prefer more logical methods such as in - depth form study or statistical based analysis.

The CIES Football Observatory, billed as an independent study center specializing in football statistical analysis, published the results of another study today - the top 50 value add list.

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.

Diversity and Change in Australian Families: Statistical profiles Australian Institute of Family Studies Melbourne.

Before the study period, there was no statistical difference between the two groups in the prevalence of overweight kids.

According to Robert Hall, professor of pediatrics at the University of Missouri School of Medicine in Kansas City, there was no statistical difference in growth, language development, vision or cognitive development among the children studied, although in most categories the breast - fed infants did show slightly better performance.

Studies have shown no statistical difference in test scores of homeschooled children taught by parents who were certified teachers and homeschooled children who were taught by parents without teaching certificates.

In plain English, statistical power is the likelihood that a study will detect an effect when there is an effect there to be detected.

The strengths of the study include the ability to compare outcomes by the woman's planned place of birth at the start of care in labour, the high participation of midwifery units and trusts in England, the large sample size and statistical power to detect clinically important differences in adverse perinatal outcomes, the minimisation of selection bias through achievement of a high response rate and absence of self selection bias due to non-consent, the ability to compare groups that were similar in terms of identified clinical risk (according to current clinical guidelines) and to further increase the comparability of the groups by conducting an additional analysis restricted to women with no complicating conditions identified at the start of care in labour, and the ability to control for several important potential confounders.

Also, all of these studies include breastfeeding as a covariate in their statistical models.

(For an excellent analysis of the statistical limitations in this study see this UNICEF commentary on it.)

An article on the environmental impact of the production and disposal of millions of plastic and cloth diapers reveals the length to which corporations will go to ensure profit margins: couching advertisements in «scientific studies»; funding studies based on controversial methodologies; using unscientific statistical studies to cook the books on cost - benefit analyses of environmental damage; and employing shrewd, manipulative and effective public - relations strategies.

Studies that had used a child - behaviour measure (reported in at least 20 % of all studies) and where there was sufficient statistical information were synthesised quantitatively (n = 24 stStudies that had used a child - behaviour measure (reported in at least 20 % of all studies) and where there was sufficient statistical information were synthesised quantitatively (n = 24 ststudies) and where there was sufficient statistical information were synthesised quantitatively (n = 24 studiesstudies).

In order to look at the evidence from all relevant studies a vote - counting exercise was undertaken to assess the results of included studies that had not used one of the predominant child - behaviour measures or had not provided enough statistical information to be included in the meta - analysiIn order to look at the evidence from all relevant studies a vote - counting exercise was undertaken to assess the results of included studies that had not used one of the predominant child - behaviour measures or had not provided enough statistical information to be included in the meta - analysiin the meta - analysis.

women allocated to midwife - led continuity models of care were more likely to be attended at birth by a known midwife (RR 7.04, 95 % CI 4.48 to 11.08; participants = 6917; studies = seven); however, the effect estimates for individual studies are highly variable, as reflected in substantial statistical heterogeneity (Tau ² = 0.31; I ² = 94 %; Analysis 1.15).

Randomisation was achieved using numbered, sealed envelopes prepared by the statistical adviser from random permuted blocks and held in the study office.

Studies had to be case control for the purpose of the statistical analysis; have breastfeeding as a measured exposure and leukemia as a measured outcome; include data on breastfeeding duration in months, including but not limited to, 6 months or more (where relevant data were unavailable in the publication, the authors of the studies were contacted); and been published in peer - reviewed journals with full text available in EStudies had to be case control for the purpose of the statistical analysis; have breastfeeding as a measured exposure and leukemia as a measured outcome; include data on breastfeeding duration in months, including but not limited to, 6 months or more (where relevant data were unavailable in the publication, the authors of the studies were contacted); and been published in peer - reviewed journals with full text available in Estudies were contacted); and been published in peer - reviewed journals with full text available in English.

The UK Childhood Cancer Study investigators23 published in 2001 a study that provided 1636 leukemia cases and indicated a weak evidence of borderline statistical significance that ever (compared with never) having been breastfed was associated with a small reduction in leukemia risk (OR, 0.89; 95 % CI, 0.84 - 1Study investigators23 published in 2001 a study that provided 1636 leukemia cases and indicated a weak evidence of borderline statistical significance that ever (compared with never) having been breastfed was associated with a small reduction in leukemia risk (OR, 0.89; 95 % CI, 0.84 - 1study that provided 1636 leukemia cases and indicated a weak evidence of borderline statistical significance that ever (compared with never) having been breastfed was associated with a small reduction in leukemia risk (OR, 0.89; 95 % CI, 0.84 - 1.00).

In addition, increasingly sophisticated statistical modeling techniques were applied to correlational studies to aid understanding of the results.

This is consistent with other studies demonstrating a link between breastfeeding and maternal sensitivity.25, 26,27 For example, in a longitudinal study of more than 1300 families in the USA, mothers who breast fed were observed to be more sensitive to their babies at 6, 15, 24 and 36 months.27 Importantly, this difference persisted after statistical control for the effects of maternal mental health, the quality of the home environment in terms of infant health and stimulation and socioeconomic status.

If you don't have any scientific or statistical training (and I don't believe you do) then you are in no position to make the claim that medical researchers don't «use the scientific method in their studies.»

Another study of 2,900 Australian infants assessed at ages 1, 2 3, 5, 8, 10, and 14 years found that infants breastfed for 6 months or longer, had lower externalizing, internalizing, and total behaviour problem scores throughout childhood and into adolescence than never breastfed and infants fed for less than 6 months.8 These differences remained after statistical control for the presence of both biological parents in the home, low income and other factors associated with poor mental health.

In with respect to the quality of mother - infant relations, a prospective longitudinal study of around 1000 young New Zealanders found a small but significant association between breastfeeding duration and adolescents» perceptions of maternal care, with a longer duration of breastfeeding being associated with increased adolescent perceptions of maternal nurturance.9 This association persisted after statistical control for a wide range of the selection factors noted above.

However, individual studies have been modest in size and lacking in statistical power to exclude even quite large effects on diabetes risk.

The study uses four statistical approaches, which come to the same conclusion: «there is no significant correlation between dissolved methane concentrations in groundwater and proximity to nearby oil / gas wells.»

Though that seems to be a reasonable conclusion, the associated statistical analyses seem «inadequate,» says Sarah Millar, a dermatologist who studies hair at the University of Pennsylvania Perelman School of Medicine, in an email to Science.

While ZMapp seemed to help more people survive an Ebola infection, it narrowly missed the statistical threshold that researchers set to prove the drug's effectiveness, according to the new study, published in the New England Journal of Medicine.

While combining data from many studies improves statistical power, the researchers note that the associations between hormonal contraception and risk of becoming infected with HIV were attenuated for studies at lower risk of methodological bias compared to those at higher risk of bias, suggesting that some of the risk found to be associated with hormonal contraception may be due to bias in the original studies.

The pitfalls of statistical analysis In the new investigation, Wörheide and his colleagues reanalyzed the genome data reported in the earlier studies, and their results reject the «Ctenophora first» hypothesiIn the new investigation, Wörheide and his colleagues reanalyzed the genome data reported in the earlier studies, and their results reject the «Ctenophora first» hypothesiin the earlier studies, and their results reject the «Ctenophora first» hypothesis.

Done well, these methods of blending data can provide a result with strong statistical power, finding an effect that might be missed in a single study.

Studying 49 neuroscience meta - analyses published in 2011, the researchers find that the median statistical power of the 730 included studies was 21 %.

Depending on the institution, these include online case studies, podcasts and webcasts of seminars, and continuing medical education courses on topics such as statistical methods, or engaging the community in research.

Now, Wolfgang Wiedermann, a quantitative psychology and assistant professor in the University of Missouri College of Education, and Alexander von Eye, a quantitative methodologist at Michigan State University, have developed a new statistical technique that can help scientists determine causation of effects they are studying.

The university asked a statistician to check if any of the papers Förster published between 2007 and 2014 — the years he worked in Amsterdam — contained the same highly improbable statistical patterns found in the SPPS study.

Wiedermann and von Eye's six studies were published in the British Journal of Mathematical and Statistical Psychology, the Journal of Person - Oriented Research, Educational and Psychological Measurement, Multivariate Behavioral Research, the International Journal of Behavioral Development and Psychological Methods.

But the evidence for an overall imbalance of the directions of cosmic rays in this new study is stronger, surpassing the so - called five sigma threshold for statistical significance, says Antonio Bueno, an astroparticle physicist at the University of Granada in Spain and co-spokesperson for the 500 - member Auger team.