In search of the key word
Researchers found long-range correlation between letters and words within texts, enabling conclusions about topic connections. Burstiness analysis also reveals representative words in passages.
Statistical Analysis
Articles tagged with Statistical Analysis
Statistical analysis projects future temperatures in North America
Researchers at Ohio State University have combined different climate models using spatial statistics to project future seasonal temperature changes in North America. The analysis estimates that average land temperatures will rise around 2.5 degrees Celsius by 2070, with regional temperature rises varying across seasons and regions.
Mitigating disasters by hunting down Dragon Kings
Researchers aim to predict Dragon Kings, statistical anomalies in natural disasters, using advanced statistical analysis. They have identified empirical evidence in abnormal rainfall, hurricanes, and sudden events.
A new application allows online statistical analysis of gene-expression data
The new IT application BootstRatio, developed by IDIBELL researchers, allows online statistical analysis of gene-expression data. It uses resampling techniques to generate a hypothetical distribution and provides comprehensible results for scientists.
ADR awards 2012 Neal W. Chilton Fellowship in Clinical Research to Bing-Yan Wang
The AADR has awarded the 2012 Neal W. Chilton Fellowship in Clinical Research to Bing-Yan Wang, an associate professor at the University of Texas Health Science Center. The fellowship will support Wang's clinical testing of a mouthwash effective against oral bacteria.
Protecting confidential data with math
Researchers Rudolf Ahlswede and Harout Aydinian analyze a security-control model for statistical databases, proposing an optimal collection of SUM queries to prevent compromise of confidential information. Query restriction is one approach used to limit the amount of data that can be retrieved by users.
What makes tires grip the road on a rainy day?
Researchers from Italy and Germany created a model to predict friction on rough surfaces in wet conditions, shedding light on the flow of liquid at contact interfaces. The study confirms experimental findings and offers potential applications for creating microstructured tyres with improved grip in rainy weather.
Can't buy me love: Study shows materialistic couples have more money and more problems
A study by Brigham Young University found that materialistic couples score lower on marriage stability and conflict resolution than non-materialistic couples. Couples where both partners are materialistic experience eroding communication and poor conflict resolution.
Baseball's winning formula
A University of Delaware professor found hitting accounts for more than 45% of teams' winning records, fielding for 25%, and pitching also for 25%. The impact of stolen bases is greatly overestimated in baseball winning percentages.
Right to remain silent not understood by many suspects
Research suggests that almost 1 million US criminal cases are compromised each year due to a lack of understanding about Miranda warnings. According to psychologist Richard Rogers, defendants often incorrectly believe their silence can be used against them in court.
Lifelong gap in health between rich and poor set by age 20
A study by McGill University found that socio-economic status affects Canadians' health-related quality of life from a young age. The research analyzed data from 17,000 Canadians and found that poorer individuals start out less healthy than their wealthier counterparts and remain so over their lifetimes.
MIT research: What makes an image memorable?
A new study from MIT neuroscientists shows that the most memorable photos are those containing people, followed by static indoor scenes and human-scale objects. The researchers developed a computer algorithm to rank images based on memorability, which could be useful for graphic designers and photo editors.
Bats lend an ear to sonar engineering
Bats' varying ear shapes influence biosonar functionality, with implications for engineering applications such as SONAR and RADAR. The study's findings provide insights into the role of biodiversity in customizing general principles for different species.
Study: Couples who delay having sex get benefits later
A study of 2,035 married individuals found that delaying sex until marriage led to higher relationship stability, satisfaction, and communication. Couples who waited longer reported better sexual quality in their relationships.
Ear bones reveal spawning secrets of Lake Erie walleye
A statistical analysis of chemicals found in walleye ear bones reveals that almost all Maumee-spawned walleyes were hatched there, but only two-thirds of Sandusky-spawned walleyes originated from the same river. This study helps wildlife officials determine which rivers are at risk of overfishing.
Profiting on the Internet
A Tunisian researcher's study finds that Internet-based capabilities combine with other complementary organizational capabilities to lead to competitive advantage. Firms can create resource complementarities through capitalizing on online capability and technological opportunism, leading to improved performance and bottom line growth.
Expert: Bracket seedings irrelevant after Sweet Sixteen round
After the Sweet Sixteen round, a team's seeding becomes statistically insignificant in predicting its chances of winning. Teams that make it past this point can be predicted based on other factors such as player match-ups and style of play.
Iowa State physicist writes a better formula to predict baseball success
Kerry Whisnant, a physicist at Iowa State University, has developed a formula that predicts baseball team success by considering run consistency and slugging percentage. His study shows that more consistent teams with higher SLG tend to win more games for the same RPG.
AADR awards 2010 Neal W. Chilton Fellowship in Clinical Research to Dolphus Dawson, III
Dolphus Dawson, III, receives the 2010 AADR Neal W. Chilton Fellowship for biostatistical analysis of a dataset from the Effects of Periodontal Therapy on Preterm Birth (OPT) study. The analysis will investigate associations between clinical measures and preeclampsia in the OPT study population.
Formula to detect an author's literary 'fingerprint'
Physicists in Sweden create a formula to identify distinct author styles by analyzing word frequencies in literature, challenging George Kingsley Zipf's maxim. The 'meta book' concept represents an imaginary infinite book containing each author's unique word frequency characteristics.
'Hobbits' are a new human species -- according to the statistical analysis of fossils
Researchers have confirmed Homo floresiensis as a distinct species using statistical analysis on skeletal remains, rejecting the theory that it was a diseased sub-population of healthy humans. The study reveals unique anatomy that differs from modern humans and other primate species.
New statistical method shows importance of dialysis dose
A new approach to statistical analysis shows that a higher dose of dialysis can lead to longer survival times for patients with advanced kidney disease. The study found no significant effect with conventional methods, contradicting previous conflicting results.
Genes identified that are linked to spinal disc degeneration
Two University of Alberta researchers have discovered eight genes directly related to disc degeneration, providing valuable insights into its biological mechanisms. The study's findings may lead to effective interventions for individuals prone to spine problems, such as those with obesity or genetic susceptibility.
Team-based diabetes care fetches more value for dollar
A recent study found that team-based diabetes care improves health outcomes for Medicaid patients, including significant reductions in systolic blood pressure, body mass index, and hemoglobin A1C. However, the study suggests that this approach does not result in lower treatment costs under Medicare and Medicaid.
GKSS scientists refute argument of climate skeptics
Calculations by Dr. Eduardo Zorita and colleagues estimated the likelihood of warm record years after 1990 being an accident is extremely low, suggesting external influences
What is the relationship between laryngopharyngeal reflux and reflux esophagitis?
A study published in the World Journal of Gastroenterology found a significant association between laryngopharyngeal reflux (LPR) and reflux esophagitis. The research identified age, hoarseness, and hiatus hernia as factors significantly associated with LPR. Further study is needed to elucidate the importance of hiatus hernia in LPR.
Carnegie Mellon computer model reveals how brain represents meaning
The study creates a computational model predicting brain activation patterns for thousands of concrete nouns, with accuracies significantly greater than chance. The model uses text corpus data to identify basic building blocks the brain uses to represent meaning.
Patients prefer to challenge nurses rather than doctors on safety issues
Research reveals that patients are more likely to ask factual questions of all healthcare professionals than challenging clinical abilities. Women and patients who feel encouraged by their doctors are more willing to ask difficult questions, suggesting improved patient safety outcomes.
Review of group-based cancer trials reveals flaws in studies' design and analysis
A review of 75 group-randomized cancer trials found that fewer than half used appropriate statistical methods to analyze results. The studies' flawed designs may have led to incorrect conclusions about intervention effectiveness.
Long-term cycles in American national electoral politics occur more rapidly than previously believed
Research suggests shifts in party control occur roughly every 14 years, with presidential and full cycle changes completing about every 26-28 years. The study provides a theoretical model for explaining these cycles and refines the understanding of national electoral realignments.
Older climbers face uphill battle on Mount Everest
Research found that older climbers (60+) have a sharply higher chance of dying if they reach the summit compared to younger climbers. The overall chances of reaching the summit dropped to 13% for those in their 60s, and the death rate more than tripled to 5%.
Women priests will 'save church from sinking'
Research by Dr David Voas at the University of Manchester found that women priests are nearly half of all ordained clergy and are more likely to serve in rural areas. The lack of women in leadership positions may contribute to the Church's declining population, with most male parish priests over 60.
St. Jude first to describe new statistical method
St. Jude Children's Research Hospital has developed a new statistical technique that enables researchers to statistically analyze results of clinical trials without traditional control groups. This novel approach allows for the early adoption of new treatments and validates the use of interim analyses in clinical trials.
NIST method improves reliability of GPS clocks
A statistical method developed by NIST makes analyzing satellite-borne time signals faster and easier, enabling accurate location and distance measurements. The method also accelerates the evaluation of clocks during satellite construction, improving GPS reliability and accuracy.
Sun's direct role in global warming may be underestimated, Duke physicists report
A study by Duke physicists suggests that climate models of global warming need to be corrected for the effects of changes in solar activity. The researchers found that the sun may have minimally contributed about 10 to 30 percent of the 1980-2002 global surface warming.
Changes in ozone layer offer hope for improvement, says team of scientists
Scientists detect early signs of ozone recovery in the atmosphere, attributed to the Montreal Protocol's successful efforts to limit harmful chemicals. However, full recovery is expected to take several decades, highlighting the need for continued sun protection measures.
Foreign companies exaggerated job targets, claims study
A new study by Newcastle University reveals that many foreign-owned plants in the North East England fell short of their promised job creation targets. The research team found that firms which received special financial assistance were more likely to achieve their employment goals, but those involved with Invest UK were less likely to ...
National survey shows few physicians elected to Congress
A recent study published in JAMA found that only a few US physicians have been elected to Congress since the 1960s. The researchers suggest that training and financial incentives may be contributing factors to this lack of representation. The study highlights the need for medical leadership in shaping healthcare policy.
Unionized male visible minorities earn less: Study
A recent study analyzed hourly wages by gender and union affiliation among Canadians. Male visible minorities in unions earned 12% less than European background males, while unions improved women's wages on average. The findings suggest that unions must develop specific goals to target wage disparities faced by ethnic minorities.
Youth drinking trends stabilize, consumption remains high
According to a recent study, youth drinking rates have stabilized in the US since the early 1990s, with over 80% of adolescents consuming alcohol by age 12th-grader. The stable prevalence rates are concerning, highlighting the need for continued efforts to prevent underage drinking.
Full moon exerts no pull on frequency of epileptic seizures
Researchers analyzed 770 seizure records to investigate the possible link between lunar phases and frequency of epileptic seizures. The study found that epileptic seizures were lowest during the full moon and highest in its last quarter.
Technique to analyze steadiness of marksmen's aim may help patients with tremors
Researchers from Penn State and the University of Verona developed a new approach to analyze the steadiness of a marksman's aim, which may help diagnose and monitor tremors in patients with neuro-muscular disorders. The technique combines statistical data analysis and stability analysis to track and explain the sources of tremor.
University of California, San Francisco responds to inaccurate claims by company
The University of California, San Francisco strongly rejected claims made by a company that attempted to block publication of an important AIDS research study. The study found no evidence of clinical benefit for the drug HIV-1 Immunogen in boosting the immune system of patients with HIV-1.
University of Illinois at Chicago researcher and 'Science' join organ debate
A statistical analysis of liver patient records helped resolve a public health policy dispute over organ allocation. The new system prioritizes the most severely ill patients, improving transplant rates and reducing waiting times.
You can't see it, but it's real: Glass ceiling is solid
A recent study by David J. Maume Jr. found that 44% of men are promoted after 12 years, compared to 15% of white women, 7% of black women, and 17% of black men. Discrimination was the only factor controlling promotion rates across professions.
New techniques to foil cyber intruders
Researchers at the Naval Surface Warfare Center are developing new statistical techniques to aid human operators in detecting and defending computer networks against intrusion. The new algorithms will filter out access attempts from strange places or at strange hours, or any attempts asking for unusual information.
National Study Suggests Heart Attack Severity May Be Declining
A recent study suggests that heart attack severity is decreasing in the US, with possible reasons including increased preventive measures and better treatment for heart attacks. The analysis of the Atherosclerosis Risk in Communities (ARIC) study found a decline in both in-hospital and out-of-hospital coronary heart disease mortality.
Stent Procedures May Be Unnecessary In Some Heart Cases
Researchers analyzed over 5,000 angioplasty patients and found that 8-18% of stent implants were unnecessary, especially in men with shorter lesions. A simple angioplasty appears to work as well as implanting a stent, suggesting potential cost savings.
New Approach To Diagnosis Of Breast Cancer Shows Promising Results
A new diagnostic technique has been found to distinguish benign breast abnormalities from breast cancer in pre-menopausal women. The test, called the Biofield Diagnostic System, performed best in this age group, with a high sensitivity and specificity rate.
Statisticians Cut The Tennis Commentators Down To Size
Statisticians Jan Magnus and Franc Klaassen analyzed nearly 90,000 points from Wimbledon matches between 1992 and 1995, finding players are not more likely to fluff a point after breaking or serve a double fault. The study challenges common clichés about tennis scoring patterns.
Giant Snowballs In Space? No, Says Researcher, They're Simply Black Snow On The TV Screen
University of Washington geophysicist George Parks analyzed Louis Frank's ultraviolet camera images and concluded that the white snow in space is likely instrument noise. A closer examination of the data revealed statistical evidence supporting this finding, suggesting that the 'snowballs' are not actual cosmic phenomena.
Anti-Clotting Drug Used During Angioplasty Reduces Need For Subsequent Bypass Surgery
A recent study found that patients who received the anti-clotting drug ReoPro before angioplasty had a 19% lower risk of needing coronary artery bypass graft surgery within six months. The study, which involved 5,641 patients, also showed significant cost savings in treating heart patients.