# statistical significance

(redirected from Significant reduction)

## sta·tis·ti·cal sig·nif·i·cance

(stă-tis'ti-kăl sig-nif'i-kăns),
Statistical methods allow an estimate to be made of the probability of the observed degree of association between variables, and from this the statistical significance can be expressed, commonly in terms of the p value.
Farlex Partner Medical Dictionary © Farlex 2012

## statistical significance

A term used in statistical analysis when a hypothesis is rejected. As a general rule, the non plus minimum significance level is 5%—i.e., it is said to be significant at the 5% level—which means that when the null hypothesis is true, there is only a 1-in-20 chance of rejecting it.

## statistical significance

Significance Statistics A statement of the probability that an observation represents a true causal relationship and not a chance occurrence; the probability that an event or difference occurred as the result of an intervention–eg, a vaccine, rather than by chance alone; this probability is determined by using statistical tests to evaluate collected data. See Significance.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

## sta·tis·ti·cal sig·nif·i·cance

(stă-tis'ti-kăl sig-nif'i-kăns)
Statistical methods that allow an estimate to be made of the probability of the observed degree of association between variables, and from this the statistical significance can be expressed, commonly in terms of the p value.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
BARCLAYS denied it was planning a significant reduction to its branch network, amid speculation that up to a quarter of its 1,600 sites in the UK could close.
But the Norwegian Colorectal Cancer Prevention trial did find that individuals who actually underwent screening were 60% less likely to die from colorectal cancer than were controls who were not screened--a significant reduction.
A presentation from the 44th annual meeting of the American Society of Clinical Oncology revealed that calcium and magnesium administered intravenously to patients undergoing chemotherapy results in a significant reduction in neurotoxicity, a common side effect of chemotherapeutic drugs.* Neurotoxicity is characterized by pain in the extremities that can be severe enough to prevent cancer patients from continuing their treatment.
This meta-analysis revealed that fibre supplementation with a mean dose of 11.5 g/day resulted in a non significant reduction of 1.13 mm Hg in systolic BP, and a significant reduction of 1.26 mm Hg in diastolic BP.
While this is not a significant reduction in overall cost, it is an incremental step to lower costs for products made in the U.S., improving domestic competitiveness with other countries.
She added: "In North Wales' case there would be a significant reduction in precept.
Compared with baseline, a significant reduction in serum testosterone was observed after treatment in both the orlistat-treated group (approximately 94 ng/dL versus 115 ng/dL) and the metformin-treated group (approximately 97 ng/dL versus 120 ng / dL).
Sainsbury's said the pounds 2.6 million represented a 'significant reduction' of around pounds 1 million from what Sir Peter was originally entitled to.
no open windows or vents) people can expect to see a significant reduction in the quantity of mold spores in the air.
A significant reduction in the damage to DNA in the skin cells was also measured.
Children given IVGG plus corticosteroids showed statistically significant reduction in cytosine levels, while no significant reduction occurred in the IVGG-only group.
SGG Vetroflam meets the radiation control classification of Euronorm EN 357; it gives in excess of 60 minutes integrity and gives a significant reduction in radiated heat transmission.

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