A study published in JAMA Psychiatry uncovers significant associations between social vulnerability—a measurement that aggregates social determinants of health like socioeconomic status, housing type, education and insurance ...
Jul 24, 2024
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The Summer Olympic Games feature throwing events, such as shot put, hammer throw and discus. One training tool used by these athletes is throwing different mass implements to improve competitive performance, but the method ...
Jul 23, 2024
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People in their 50s with severe peripheral artery disease or PAD may be more likely than people in their 80s to undergo leg amputation one to five years after emergency surgery to restore blood flow to the lower limbs, according ...
Jul 22, 2024
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Addressing problems with diagnosing and treating breast cancer, scientists at EPFL have developed EMBER, a tool that integrates breast cancer transcriptomic data from multiple databases. EMBER can improve precision oncology ...
Jul 19, 2024
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As the world's population ages, so does the proportion of older drivers on the road. Safe driving requires adequate memory, perceptual and motor skills, and executive function abilities. Although individuals with severe Alzheimer's ...
Jun 24, 2024
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Parkinson's disease is most well-known and well-studied for its motor impairments—tremors, stiffness and slowness of movement. But less visible symptoms such as trouble with memory, attention and language, which can also ...
May 29, 2024
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Scientists from EMBL's European Bioinformatics Institute (EMBL-EBI) and the German Cancer Research Center (DKFZ) have used Danish health registries to predict individual risks for the 20 most common types of cancer.
May 23, 2024
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A statistical model can accurately predict the risk of bloodstream infections in a subset of children with cancer, according to a study published in the Journal of Clinical Oncology.
Mar 28, 2024
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An estimated 5% to 10% of blindness worldwide is due to the rare inflammatory eye disease uveitis. Intermediate uveitis is often associated with a chronic course of the disease and the need for immunosuppressive therapy. ...
Jan 30, 2024
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We've all had the experience of looking at a picture—of a sunset, a person, a sleek vehicle or adorable animal—and finding it enormously pleasing. But why? Are we culturally conditioned to gain pleasure from certain images ...
Jan 25, 2024
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A statistical model is a set of mathematical equations which describe the behavior of an object of study in terms of random variables and their associated probability distributions. If the model has only one equation it is called a single-equation model, whereas if it has more than one equation, it is known as a multiple-equation model.
In mathematical terms, a statistical model is frequently thought of as a pair (Y,P) where Y is the set of possible observations and P the set of possible probability distributions on Y. It is assumed that there is a distinct element of P which generates the observed data. Statistical inference enables us to make statements about which element(s) of this set are likely to be the true one.
Three notions are sufficient to describe all statistical models.
One of the most basic models is the simple linear regression model which assumes a relationship between two random variables Y and X. For instance, one may want to linearly explain child mortality in a given country by its GDP. This is a statistical model because the relationship need not to be perfect and the model includes a disturbance term which accounts for other effects on child mortality other than GDP.
As a second example, Bayes theorem in its raw form may be intractable, but assuming a general model H allows it to become
which may be easier. Models can also be compared using measures such as Bayes factors or mean square error.
This text uses material from Wikipedia, licensed under CC BY-SA
