News tagged with risk factors
Researchers from Murdoch University's School of Health Professions are urging health organisations to reconsider their attitudes to mothers and babies bedsharing.
Health Apr 29, 2013 | 4.1 / 5 (34) | 0
(Medical Xpress)—UCLA life scientists have identified a gene previously implicated in Parkinson's disease that can delay the onset of aging and extend the healthy life span of fruit flies. The research, ...
Genetics May 06, 2013 | 4.8 / 5 (18) | 1 |
(Medical Xpress)—The first symptoms of major depression may be behavioral, but the common mental illness is based in biology—and not limited to the brain.
Psychology & Psychiatry May 23, 2013 | 4.9 / 5 (9) | 0 |
Both daughters and sons from divorced families are significantly more likely to initiate smoking in comparison to their peers from intact families, shows a new analysis of 19,000 Americans.
Health Mar 14, 2013 | 4.2 / 5 (5) | 1
The mantra that quality is more important than quantity is true when considering how social relationships influence depression, say U-M researchers in a new study.
Psychology & Psychiatry Apr 30, 2013 | 4.2 / 5 (5) | 0 |
Having too much body fat makes arteries become stiff after middle age, a new study has revealed.
Cardiology May 15, 2013 | 5 / 5 (4) | 0 |
(HealthDay)—Elderly people who are socially isolated and lonely may be at greater risk of early death, British researchers report.
Health Mar 25, 2013 | 4.8 / 5 (4) | 1 |
Many people know what it's like to feel sad or down from time to time. We can experience negative emotions due to many things – a bad day at work, a relationship break-up, a sad film, or just getting out ...
Psychology & Psychiatry Mar 11, 2013 | 5 / 5 (3) | 1
Although sildenafil is best known for promoting erections, it may also serve as a weight loss aid by coaxing our bodies to store more healthy "brown fat" relative to unhealthy "white fat" than it would otherwise do on its ...
Overweight and Obesity Apr 01, 2013 | 5 / 5 (3) | 0
Researchers at the University of Maryland School of Medicine, Baltimore, have shown in a mouse model that infection with nematodes (also known as roundworms) can not only combat obesity but ameliorate related metabolic disorders. ...
Immunology Apr 25, 2013 | 5 / 5 (3) | 1
Depression may inhibit the anti-inflammatory effects typically associated with physical activity and light-to-moderate alcohol consumption, according to researchers at Duke Medicine.
Psychology & Psychiatry Mar 26, 2013 | 4.7 / 5 (3) | 0 |
A new study with college roommates shows that a particular style of thinking that makes people vulnerable to depression can actually "rub off" on others, increasing their symptoms of depression six months later.
Psychology & Psychiatry Apr 18, 2013 | 4 / 5 (3) | 0 |
Study of Atomic-Bomb Survivors: Even lower levels of ionizing radiation exposure may lead to soft tissue cancers
In one of the largest and longest follow-up studies ever conducted to assess the effects of ionizing radiation upon the development of soft tissue sarcomas in humans, the investigators found that much lower levels than previously ...
Surgery Feb 11, 2013 | 5 / 5 (2) | 0
(HealthDay)—A staggering one in eight Americans has been diagnosed with type 2 diabetes, a new Harris Interactive/HealthDay poll suggests.
Diabetes Feb 20, 2013 | 5 / 5 (2) | 0 |
For the first time, an international team of researchers has found that a combination of a particular virus in the mother and a specific gene variant in the child increases the risk of the child developing schizophrenia.
Psychology & Psychiatry Mar 08, 2013 | 5 / 5 (2) | 0
A risk factor is a variable associated with an increased risk of disease or infection. Risk factors are correlational and not necessarily causal, because correlation does not imply causation. For example, being young cannot be said to cause measles, but young people are more at risk as they are less likely to have developed immunity during a previous epidemic.
Risk factors are evaluated by comparing the risk of those exposed to the potential risk factor to those not exposed. Let's say that at a wedding, 74 people ate the chicken and 22 of them were ill, while of the 35 people who had the fish or vegetarian meal only 2 were ill. Did the chicken make the people ill?
So the chicken eaters' risk = 22/74 = 0.297 And non-chicken eaters' risk = 2/35 = 0.057.
Those who ate the chicken had a risk over five times as high as those who did not, suggesting that eating chicken was the cause of the illness. Note, however, that this is not proof. Statistical methods would be used in a less clear cut case to decide what level of risk the risk factor would have to present to be able to say the risk factor is linked to the disease (for example in a study of the link between smoking and lung cancer). Even then, no amount of statistical analysis could prove that the risk factor causes the disease; this could only be proven using direct methods such as a medical explanation of the disease's roots.
The earliest use of risk factor analysis dates back to Avicenna's The Canon of Medicine (1020s), though the term "risk factor" was first coined by heart researcher Dr. Thomas R. Dawber in a landmark scientific paper in 1961, where he attributed heart disease to specific conditions (blood pressure, cholesterol, smoking).
For more information about Risk factor, read the full article at
This text uses material from Wikipedia and is available under the GNU Free Documentation License.