Head lice reveal contact between modern and ancient humans
...us , took place about 1.8 million years ago but is statistically consistent with the more recent divergence time of the lice (at 1.18 mya). Reed and colleagues therefore propose a scenario in which H. sapiens and H. erectus carried distinct types of lice. As the first waves of modern humans left Africa about 1...Obese women with early-stage breast cancer more likely to die than women of normal weight
...patients) and obese (701). "Our results show a statistically significant difference between obese women and the other groups," said Anderson. The five-year rates for overall survival were 92 percent, 92 percent and 88 percent for the normal-weight, overweight and obese groups, respectively. Five-year rates o...Sedentary overweight people get insulin boost from short term exercise; CVD risks trend down
...er day. While the CVD changes weren't statistically significant, Mitchell noted, "in the negative energy balance group (NEG), all of the markers were trending in a favorable direction, whereas almost no changes, or even slightly negative changes, occurred in the zero energy balance (ZERO) group." ...Plentiful fossils of dinosaur contemporary allow population study
...ke cycles, about 350,000 years apart, but found no statistically significant differences in the size of specimens from the different periods," Casey said. The researchers also tested for size differences between two different types of Tany based on a bone in the pelvic region that about 40 percent of them have. O...Elevated inflammatory enzyme, Lp-PLA2, significantly linked to ischemic stroke
...ticipants with the highest levels of Lp-PLA2 had a statistically significant doubling of risk of suffering an ische....0 milligrams/deciliter). When investigators also statistically accounted for participants' levels of LDL-C and high-density lipoprotein cholesterol (HDL-C) and CRP...Acetaminophen shows positive in vivo cardioprotective effects in heart attack, arrhythmia
...iratory-metabolic status of the dogs suggests that statistically significant variability in myocardial infarction cannot be explain on the basis of ventricular mechanics, metabolism or respiration." They said the results of the current study "extend our recent work in vitro to the in vivo arena and reveal salutary...Case announces launch of gene expression analysis software
...es. "The technique allows researchers to discover statistically significant genes from gene chip experiments that are normally hidden in statistical noise," said Ishwaran. "Researchers here at Case have already found our methodology useful," said Rao. "We are thrilled that this software is now available to scien...Body's biological clock found to affect cardiac rhythm patterns in healthy adults
...fluctuations found in a window of 10 beats will be statistically similar to those found in a heartbeat interval of 100 beats and or one of 1000 beats. "These studies have demonstrated that this self-similar structure in the temporal order of heartbeat fluctuations changes with certain behaviors, such as sleep or...Hospital epidemiologists trace outbreak of organism to commonly used wound care equipment
...tion of antimicrobial agents, were not found to be statistically significant. Further investigation revealed that a change in the pulsatile lavage procedure had occurred two months prior to the outbreak. As a cost-saving measure, the disposable suction canisters for the guns were replaced daily or when full, rath...Anti-bacterial additive widespread in U.S. waterways
...ions in the Greater Baltimore region, and found no statistically significant differences. The results also show that the levels of triclocarban in water resources nationwide are much higher than previously thought. In surface water from the Baltimore region, the researchers detected triclocarban at concentrations ...Report assesses health implications of perchlorate ingestion
...g/kg to 0.5 mg/kg for 14 days. The study found no statistically significant inhibition of iodide uptake by the thyroid at the 0.007 mg/kg daily dose. The findings in this study are supported by the results in four other studies of healthy subjects, including a six-month study. The committee recommended that an ...Study in Royal Society journal on sense of fairness in chimpanzees
...communication were unlinked, and their association statistically increased (linkage desequilibrium). We induced a single mutation in one Drosophila gene that independently affected both the production of sex pheromones and their perception. This gene has multiple effects on pheromonal communication. Contact: Dr J ......fled with human IQ tests: cultural bias. The index statistically takes into account differences in the number of observations for commonly seen birds, such as crows, and rare isolated sightings. Even then, he says, there's a clear hierarchy for bird innovation ability. The crow and falcon families are at the top o...Study: Testing for joint substance in blood might improve diagnosis of osteoarthritis
...patients, both blacks and whites. "Our study shows statistically significant differences in average levels of serum hyaluronan (HA) between individuals with osteoarthritis of the knee as shown on X rays and those without knee or hip osteoarthritis," said study director Dr. Joanne M. Jordan. "Serum HA levels not on...Neuronal 'traffic jam' marks early Alzheimer's disease
...stein. "We found in the early cases a very strong, statistically meaningful swelling in the neurons." The researchers tested whether they could enhance the pathology they observed in the mice and humans by reducing the levels of a key transport protein, kinesin-1, the cell's principal molecular motor for transport...Topical treatment shown to inhibit HIV and herpes simplex virus infection
...CVL obtained at baseline. The effects were highly statistically significant (p "An inflammatory responses could potentially increase susceptibility to HIV and limit any protective effect of microbicides." said Betsy Herold, M.D., Professor of Medicine and Chief of Pediatric Infectious Disease at Mount Sinai and ...Asthma relapse in children common, possible risk factors identified
... into remission, relapsed by age 26. Although not statistically significant, the patients who relapsed more often ...of relapse in the future would prove to be true at statistically significant levels," said Dr. Sears. "By not smoking and avoiding occupations that increase the lik...Alfred G. Knudson Jr., receives American Association for Cancer Research Lifetime Acheivement Award
... study of tumor suppressor genes. This pioneering, statistically based model explained both the hereditary and sporadic forms of retinoblastoma, and was followed by similar models for neuroblastoma and Wilms' tumor. The fact that the model was first proposed almost 15 years before molecular technologies were able ...Viruses may one day help treat brain tumors
...th the control virus, all 10 had died by day 21, a statistically significant difference. "The treatment extended the animals' lives by several days," Chiocca says. "If we could achieve a proportional increase in humans with malignant glioma, that would be a very significant advance."...Surgery season and vitamin D intake may predict successful lung cancer surgery
...vitamin D intake who had surgery in the summer had statistically significantly better outcomes - a three-fold better disease-free survival and a four-fold better overall survival - than patients who had surgery during winter with the lowest vitamin D intake. The five-year disease-free survival was 83 percent ver...