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Tag: "statistics" at biology news

US life expectancy about to decline, researchers say

...t. To do this, they used recently published health statistics and assumed that everyone who is currently obese acquired the body mass index of people who have the lowest risk of death. By calculating years-of-life-lost due to obesity and combining that with estimates of the prevalence of obesity in younger gen...

Increased risk of osteoporosis associated with gene that one in five people have

... hip fractures, which can be devastating." Recent statistics from the National Osteoporosis Foundation estimate that more than 20 percent of hip fracture patients die within a year. Additionally, about 30 percent of hip fracture patients will fracture the opposite hip, up to 25 percent may require long-term nu...

Computational Method Speeds Mapping of Cell Signaling Networks

... Bayesian network modeling. Bayesian analysis uses statistics to determine associations and dependencies between molecules in a network. With sufficient experimental data, for example, a Bayesian network analysis can not only identify an association between signal molecules A and B, it can detect whether B depe...

Researchers make gains in understanding antibiotic resistance

...thing about it." Steitz cited, for example, recent statistics published in the journal Nature, stating that hospitals in the United States see some two million cases of antibiotic-resistant infections each year; 90,000 patients die annually from such infections. In their experiments, Steitz and his colleagues ...

Canadian youth 4th highest in international obesity study

...ight and obesity in youth." The study is based on statistics gathered in 2001-2002 by the World Health Organization's Health Behaviour in School-Aged Children report, which surveyed more than 160,000 young people aged 11, 13, and 15 years in Europe and North America. The Canadian component of the WHO initiativ...

Confocal imaging promises early detection of skin cancer

Skin cancer is on the increase. Recent statistics for Germany show that some 10 to 12 people in every 100,000 get the disease every year. Alarmingly, this figure is growing at the rate of five to ten per cent annually. From the same group, some 140 will also get non-melanoma or less serious skin can...

Ocean climate predicts elk population in Canadian Rockies

Mark Hebblewhite can look at specific climate statistics from the north Pacific Ocean and tell you how the elk are doing in Banff National Park. The University of Alberta doctoral student is the first researcher to show a correlation between the North Pacific Oscillation (NPO) and a mammal population. Bas...

Researchers develop promising new gene network analysis method

...ed scientists from the fields of biology, physics, statistics and computer science at Brown, Università di Bolog...des-old tool used to crunch everything from sports statistics to language production. The other was a correlation method based on network theory, which has been u...

Scripps research scientists identify infertility molecule

...eports that in 2002, the latest year for which the statistics are available, more than 100,000 women over the age of 40 gave birth. This was the first time that this number topped 100,000 in a given year. The success of these older-than-traditional women at childbearing belies the difficulty that many women ov...

Scalpel-free surgery could reduce risk of HIV and hepatitis exposure for health care workers

...unity, bypassing the selection bias of traditional statistics of known infected patients presenting to primary care clinics. Furthermore, the authors report that blood-borne pathogens are associated with certain types of operations. The researchers also found that the operations associated with the greatest ri...

Sandia completes depleted uranium study

...m DU exposure are not supported by veteran medical statistics nor supported by his analysis. Only a few U.S. veterans in vehicles accidentally struck by DU munitions are predicted to have inhaled sufficient quantities of DU particulate to incur any significant health risk. For these individuals, DU-related risk...

Naturally occurring asbestos linked to lung cancer

...ible for collecting cancer incidence and mortality statistics for more than one tenth of the United States population. An estimated 98.9 percent of all mesothelioma cases diagnosed in California are reported to the registry. The registry's size enabled researchers to identify an association that might not have...

Retina adapts to seek the unexpected, ignore the commonplace

...et animals encounter many environments with visual statistics different from this hypothetical 'average' scene," Meister says. "We have found that when this happens, the retina adjusts its processing dynamically: The spatio-temporal receptive fields of retinal ganglion cells change after a few seconds in a new ...

Forsyth scientists find three bacteria associated with oral cancer

...n several days. The need for screening Government statistics show that, every year, some 30 thousand US residents are diagnosed with oral cancer. Of those diagnosed, more than 90 per cent are found to have OSCC. If discovered and treated early, OSCC has a five-year survival rate of 80-to-90 percent. But 60 per...

Exercise aside, genes may ultimately dictate seniors' mobility

...main independent longer, he added. Federal health statistics have shown that about 34 percent of the U.S. population aged 70 or older reports difficulty walking a quarter of a mile. These individuals are at much greater risk of moving into a nursing home or dying over a two-year period, compared with their cou...

Most embryos produced during IVF do not result in live births

... Sterility, the study reviewed seven years of U.S. statistics from all the fertility clinics that report data on reproductive techniques. Director of the Yale Fertility Center, Pasquale Patrizio, M.D., professor in the Department of Obstetrics, Gynecology & Reproductive Sciences led the project. "Somethin...

Immune system has evolved to prevent autoimmune disease

...rching for this distribution in health and medical statistics could shed light on this immunological puzzle and settle the scientific controversy." The Rice analysis finds the human immune system evolved to minimize the risk of cross-reactivity. For example, each cell in our bodies contains about 100,000 prote...

Number Of Babies Born Prematurely Nears Historic Half Million Mark In U.S.

...r one killer of newborns. We see from these latest statistics that the prematurity crisis in this country continues to intensify, and the aftermath of Hurricane Katrina will only make it worse, " said Dr. Jennifer L. Howse, president of the March of Dimes. "Babies are dying and those who survive are too often l...

Grasshopper love songs give insight into sensory tuning

... strategy of sensory neurons is not matched to the statistics of natural stimuli per se, but rather to a weighted ensemble of natural stimuli, where the different behavioral relevance of stimuli determines their relative weight in the ensemble." Machens, Herz, and their colleagues also concluded that their ana...

Cornell finds natural selection in humans

...rlos Bustamante, assistant professor of biological statistics and computational biology at Cornell. The Cornell/Celera team found that genes involved in immune function, sperm and egg production, sensory perception and transcription factors (proteins that control which genes are turned on or off) have been pa...

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