Sentences with phrase «statistical significance of their results»

Only 1 report assessed the association of industry sponsorship with effect size estimates, and 2 measured the association with statistical significance of the results.

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.

Due to the lack of homogeneous data on statistical significance of results or effect size, we could not quantitatively synthesize data (ie, conduct a meta - analysis) on these outcomes.

We conducted a systematic review of studies examining the association of industry sponsorship with the statistical significance of results, effect sizes, and conclusions of nutrition research.

The 2 - tailed Student's t - test was used to assess the statistical significance of our results.

With many different indices and an overall period not very long in comparison with the variability being studied it's quite possible that filtering leads to very low statistical significance of the results.

«The statistical significance of these results is far too strong to be merely dismissed, and should wipe out much of the uncertainty about the reality of global warming,» said lead author Tim Barnett of the Scripps Institution of Oceanography.

The link you provided is a rebuttal of that argument, i.e., the Bartlett formula for effective degrees of freedom fails in that case, and the statistical significance of their result is much higher than that formula would imply.

The effect is of a magnitude that remains close to the limit of detectability, or many measurements are necessary because of the very low statistical significance of the results.

On qualitative level it's pretty convincing but there are a couple of points that make it difficult to tell the statistical significance of the results.

Wonderful, R2 soars to 0.32, and with the coefficient at MINUS 6.96 and t = MINUS 4.76 and p = 2.23E - 05 we have superb statistical significance of the result that Net Forcing has a powerful effect on temperature change, it's just too bad that it is actually NEGATIVE.

Analyzed the sensitivity of a proposed price increase across ~ 400 stores, using Microsoft Excel to calculate elasticity of demand and find optimal price, and Minitab to verify statistical significance of results

Limitations include the small sample size and that data on the statistical significance of the results was not presented.

Limitations include small sample size, small number of data points, and that data on the statistical significance of the results was not presented.

Not exact matches

What the two groups have found is the beginnings of a detection «bump»: ATLAS team quotes a tentative result at 125 - 126GeV with a statistical significance of 3.6 σ (3.6 standard deviations); the CMS team finds one at 124GeV at a lower confidence level of 2.6 σ.

At first, the studies originally done claimed some kind of statistical significance, however when the studies were re-done under more tighter controlled conditions, there was no apparent results that would indicate prayer to be any more effective than anything else.

When comparing results from between - to within - family estimates, coefficients for 10 of the 11 outcomes are substantially attenuated toward zero and none reach statistical significance (p < 0.05).

However, these modest differences did not achieve statistical significance and could be, at least partly, the result of confounding; adjustment for potential confounding factors was not systematically possible with the available data.

You'll want to wait for what's called «statistical significance,» a fancy term that means that there's a 95 % chance that the results are representative of what would happen if you let the test go on forever.

Fortunately, for us and the rest of the busy world, an online calculator called AB / BA will calculate the statistical significance of your test results.

The ATLAS signal has a statistical significance of 2.3 sigma at 126 GeV, meaning that the result has around a 2 per cent chance of being down to a random fluctuation; the comparable excess at CMS has a significance of just 1.9 sigma.

Rigorously combining the two current data sets would effectively double the statistics; Tonelli suspects it would firm up the statistical significance to between 3.7 and 3.9 sigma, or a 1 in 10,000 chance of the result being a fluke.

The results had high statistical significance, and Baeten said both drugs worked «comparably» in uninfected men and women, although he would not specify the number of infections by gender in different arms of the study.

A p - value, or statistical significance, does not measure the size of an effect or the importance of a result.

The journal Basic and Applied Social Psychology recently banned the use of p - values and other statistical methods to quantify uncertainty from significance in research results

Ventricular arrhythmias occurred in 3.6 percent of patients who received beta blockers and in 6.9 percent of those who received a placebo, a difference that met the threshold for statistical significance but did not result in a clinically significant difference, Roolvink said.

It is usually a result that has a statistical significance that is rather low so that you might have a 20 percent difference (UNCLEAR (4.17) or a relative risk of 1.2 or something like that; and so it is easy when you have risks that are so small or the differences are so small to have one study show one kind of result and another study show a different kind of result.

The media's varied interpretations of the Thai AIDS vaccine study's results reflect the widespread confusion over the meaning of statistical significance.

For years, scientists have used standard statistical techniques to measure the significance of their results or the degree of correlation between two variables.

The excess had a statistical significance of 2.6 sigma, meaning there is about a 0.5 percent probability that the result is due to chance.

Semi-quantitative real - time PCR results of smad1 displayed that its expression was elevated during the day to 3.00 ± 0.48 (T11 in Fig. 5C) when seawater had added calcium, compared to relative expression of 1.56 ± 0.2 in control corals (C11 in Fig. 5C; statistical significance p < 0.05, one - way ANOVA, n = 3).

It suggests the biomedical community has been chasing statistical significance, potentially giving dubious results the appearance of validity through techniques like p - hacking — or simply suppressing important results that don't look significant enough.

The results suggest that women without FMc were more likely to have advanced disease features than women with FMc although none of these associations achieved statistical significance.

The patterns for boys in other subjects are quite consistent with those observed in history, though I should again be cautious in drawing strong conclusions because many of the results fall short of conventional levels of statistical significance.

In fact, there have been seven scientifically valid random - assignment analyses of voucher programs, and all seven found either that all voucher students perform significantly better than their nonvoucher contemporaries, or at least that most of them do (in some studies the results for black students, the majority of participants, are positive, while the results for other students fail to achieve statistical significance).

The abstract should be structured in accordance with the format: Introduction, which will include the objective or purpose of the research; Methodology, will include basic procedures (design, sample selection or cases, methods and techniques of experimentation or observation and analysis); Results, main findings (give specific datas and their statistical significance, when applicable) and Conclusions.

The purpose of tests of statistical significance is to determine whether results reflect genuine changes in performance or simply random fluctuation.

And when she describes the results from the federally funded Washington, D.C., experiment, she focuses only on the fourth - year achievement results, which showed a positive effect but fell short of the conventional standard for statistical significance by having a p =.06 instead of.05.

They also suggest that reading scores were nearly 2 percentile points higher among these students, though the results for reading fall just short of conventional levels of statistical significance (see Figure 1).

Mike also abandons any consideration of statistical significance and consolidates all positive findings together and all negative findings together, regardless of how random or reliable those individual results appear to be.

For that reason, we also discuss large impacts that fall short of statistical significance when the pattern of results is consistent over the six year time period.

As a result, the annual impacts of the intervention must be as much as 20 to 30 percent of a standard deviation in order to be detected at conventional levels of statistical significance.

They cherry - picked (if you'll pardon the expression) their method to ensure that the positive results for vouchers wouldn't achieve statistical significance, as was established pretty convincingly not only by Howell and Peterson's devastating response in Ed Next but also by Caroline Hoxby's observations in an NBER paper on their manipulation of the definition of race — Krueger and Zhu use a definition of race that is not currently used by the Census, NCES, or anyone else I know of, and that doesn't accurately reflect the way children really identify themselves by race — and they applied it selectively to only some of the students in the data set, not all of them.

Overview of the Assessment Reporting the Assessment Results — Scale Scores and Achievement Levels Description of Reading Performance by Item Maps for Each Grade Results Are Estimates NAEP Reporting Groups Exclusion Rates Statistical Significance Cautions in Interpretations

What was the statistical significance of the comparative differences that are cited in the survey results?

Almost all of the factors and smart beta strategies exhibit a negative relationship between starting valuation and subsequent performance whether we use the aggregate measure or P / B to define relative valuation.9 Out of 192 tests shown here, not a single test has the «wrong» sign: in every case, the cheaper the factor or strategy gets, relative to its historical average, the more likely it is to deliver positive performance.10 For most factors and strategies (two - thirds of the 192 tests) the relationship holds with statistical significance for horizons ranging from one month to five years and using both valuation measures (44 % of these results are significant at the 1 % level).

Low beta is the primary exception in our results, showing only one instance of statistical significance — at the 10 % level for the two - year horizon (matching the half - life), using the blended valuation measure — over the entire combination of horizons and two valuation measures.

Most strategies produce results which pass tests of statistical significance at 95 % confidence.

It would be an interesting exercise to select a sufficient number for statistical significance of random papers in other fields of science, and try to recreate their results based on publicly available data, and compare that against the allegations against climate scientists.

it is important to recognize that an inherent difficulty of testing null hypotheses is that one can not confirm (statistically) the hypothesis of no effect.While robustness checks (reported in the appendix), as well as p values that never approach standard levels of statistical significance, provide some confidence that the results do not depend on model specification or overly strict requirements for statistical significance, one can not entirely dismiss the possibility of a Type II error.