Although the Brandywine population is still predominantly rural, `` there are indications of a consistent and a statistically significant trend away from the older and relatively isolated rural communities.

A test result ( calculated from the null hypothesis and the sample ) is called statistically significant if it is deemed unlikely to have occurred, assuming the truth of the null hypothesis.

A statistically significant result ( when a probability ( p-value ) is less than a threshold ( significance level )) justifies the rejection of the null hypothesis.

factors are formally found to produce statistically significant

Carl Jung sought to invoke synchronicity to explain results on astrology from a single study he conducted, where no statistically significant results were observed.

Results showed that ACE inhibitors were associated with a statistically significant 10 % mortality reduction: ( HR 0. 90 ; 95 % CI, 0. 84-0. 97 ; P = 0. 004 ).

Interestingly, analysis of mortality reduction by different ACE inhibitors showed that perindopril-based regimens were associated with a statistically significant 13 % all-cause mortality reduction.

However, during 2006-8, several reviews of case reports and pilot studies have failed to confirm this effect, collectively indicating no statistically significant interaction between daily consumption of 250 mL cranberry juice and warfarin in the general population.

The factors that were shown to have a statistically significant effect on the chance that a civil war would occur in any given five-year period were:

Furthermore, because of the nature of the statistical tests used by experimenters, a very small proportion of all experiments conducted will yield an overall statistically significant result ( suggesting that clairvoyance took place at above-chance levels ), again simply because of chance.

There is anecdotal evidence that the use of nitrox reduces post-dive fatigue, particularly in older and or obese divers ; however a double-blind study to test this found no statistically significant reduction in reported fatigue.

In 2008, a study was published using wet divers at the same depth and confirmed that no statistically significant reduction in reported fatigue is seen.

The most accepted results are all small to moderate statistically significant results.

The results were statistically significant and are consistent with the fact that semen contains several agents that have important roles in the prevention of pre-eclampsia, which may arise out of an immunological condition.

For many of the assessments there were small but statistically significant differences of measured behaviors in children who consumed the food additives compared with those who did not.

For those comparisons in which no statistically significant differences were found, there was a trend for more hyperactive behaviors associated with the food additive drink in virtually every assessment.

Oral pentosan polysulfate is believed to provide a protective coating in the bladder, but studies show it is not statistically significant compared to placebo.

Percutaneous sacral nerve root stimulation ( PNS ) was able to produce statistically significant improvements in several parameters, including pain.

Now the result is statistically significant at the 5 % level.

The study also found a small, but statistically significant, increase in unemployment for adults aged 20 – 24.

In 1995, Card and Krueger analyzed 14 earlier time-series studies on minimum wages and concluded that there was clear evidence of publication bias ( in favor of studies that found a statistically significant negative employment effect ).

In those conditions, obedience dropped to 47. 5 percent, though the difference was not statistically significant.

Further data, from the APPROVe trial, showed a statistically significant relative risk of cardiovascular events of 1. 97 versus placebo — which caused a worldwide withdrawal of rofecoxib in October 2004.

However, the data set post-1985 ( which is widely regarded as a turning point in the Ganzfeld experiments ) remains statistically significant and has an inclining effect size regression.

A hit by pitch is not counted statistically as a walk, though the effect is mostly the same, with the batter receiving a free pass to first base.

It analyzed the results of 380 studies ; the authors reported an overall positive effect size that was statistically significant but very small relative to the sample size and could be explained by publication bias.

Selective reporting has a compounded effect on meta-analysis, which is a statistical technique that aggregates the results of many studies in order to generate sufficient statistical power to demonstrate a result that the individual studies themselves could not demonstrate at a statistically significant level.

It concluded that, although there is a statistically significant overall effect, it is not consistent and relatively few negative studies would cancel it out.

While the debate remains hotly disputed, it is therefore not surprising that a comprehensive review of published studies of gun control, released in November 2004 by the Centers for Disease Control and Prevention, was unable to determine any reliable statistically significant effect resulting from such laws, although the authors suggest that further study may provide more conclusive information.

Women showed a statistically non-significant trend to weaker influence of hereditary effects, while men showed no effect of shared environmental effects.

Epidural analgesia has no statistically significant impact on the risk of caesarean section, and does not appear to have an immediate effect on neonatal status as determined by Apgar scores.

In other conditions involving three or more trials, there was no statistically significant effect for smoking, dementia, depression, obesity, hypertension, insomnia and anxiety, although confidence intervals were wide.

Utts maintained that there had been a statistically significant positive effect, with some subjects scoring 5 %- 15 % above chance.

Such devices are often based on microscopic phenomena that generate a low-level, statistically random " noise " signal, such as thermal noise or the photoelectric effect or other quantum phenomena.

In statistical testing, a result is deemed statistically significant if that result is sufficiently extremee that, without an underlying effect, would be expected to arise by chance only rarely, and hence provides enough evidence to reject the hypothesis of ' no effect '.

use a neoclassical growth model to show that women's education has a positive statistically significant effect on labor productivity, more robust than that of men's education.

This implies that after adjusting for multiple comparisons, the Mars effect is no longer statistically significant even at the modest significance level of 0. 05 and is probably a false positive.

The averaged effect was described as very variable across the social class and A-level attainment of the candidates ; it was " small and not strongly significant for students with high A-level scores " ( i. e. for students at the more selective universities ) and “ statistically significant mostly for students from lower occupationally-ranked social-class backgrounds ”.

While the syndrome and the associated conditions may be statistically related, they do not have a clear cause and effect relationship, i. e., there is likely to be a separate underlying problem or risk factor that explains the association.

This result was not statistically significant though, and when the data on all types of leukiama in the study were taken together, a beneficial effect of the high-flavonoid diet was seen .< ref name =" pmid9876473 ">

An analysis conducted by Professor Jessica Utts showed a statistically significant effect, with gifted subjects scoring 5 %- 15 % above chance, though subject reports included a large amount of irrelevant information, and when reports did seem on target they were vague and general in nature.

" Mann carried out a series of statistical sensitivity tests on 24 long term datasets, in which he statistically " censored " each proxy in turn to see the effect its removal had on the result.

Many genetic differences ( polymorphisms ) have little effect on health or reproductive success, but serve to statistically distinguish one population from another.