Articles tagged with United States Population
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
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Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
A study found that liver transplant recipients in small OPOs had a lower proportion of patients with high MELD scores compared to those in large OPOs. Despite this difference, patient survival rates were similar between the two groups.
The prevalence of age-related macular degeneration (AMD) is estimated to be 1.47% in the US population aged 40 and older, with an expected increase to 2.95 million cases by 2020. The risk of AMD increases dramatically with age, especially among white individuals.
The prevalence of cataracts among Americans over 40 is estimated at 17.2%, with 20.5 million affected, and expected to rise to 30.1 million by 2020. Women are almost 40% more likely to develop cataract than men.
The Eye Diseases Prevalence Research Group has conducted large, population-based studies to determine the prevalence of cataract, age-related macular degeneration, diabetic retinopathy, and other eye disorders. The estimates are likely to be reliable and available without waiting many years and spending tens of millions of dollars.
A study by the Eye Diseases Prevalence Research Group found that approximately two-fifths of persons aged 40 and older with DM are affected by diabetic retinopathy, while one in twelve have reached a vision-threatening stage. The prevalence rates were estimated using data from eight population-based eye surveys.
Diabetic retinopathy, a leading eye complication in people with type 1 diabetes, affects nearly 774,000 Americans under age 30. The prevalence is highest among 40-49 year olds and older, driven by aging US population.
Individuals with alcohol use disorders were almost five times as likely to have antisocial PD or histrionic PD, while those with drug use disorders were 11 times more likely to have antisocial PD. The co-occurrence of personality disorders with alcohol and drug use disorders is pervasive in the US population.
A new dental caries vaccine is being proposed as a crucial tool to prevent the spread of tooth decay, particularly in vulnerable populations. The symposium emphasizes the vaccine's potential to combat the disease and its impact on public health.
A recent study published in the Pediatrics journal found that the United States may have a surplus of pediatricians for the next 20 years. Despite fears of a shortage, researchers used a novel approach to projecting the work force and found that the experience in pediatrics differs greatly from other primary care specialties.
Research finds blue collar workers are more apt to smoke and struggle with quitting due to low socioeconomic status. Successful quitters tend to come from wealthier backgrounds, suggesting targeted on-the-job programs can help.
According to Rutgers sociologist, the DOE's Long Term Stewardship program ignores worst-case scenarios, fails to consider public disasters. The agency relies on flawed engineering barriers and institutional rules to mitigate risks, according to Clarke.
The number of women faculty of color in academia is low and stagnant, with implications for students, research quality, and the educational experience. Strategies such as individual mentorship, institutional support programs, and clear criteria for tenure can help address this deficit and promote diversity in STEM fields.
The cerulean warbler's population decline is attributed to habitat loss and fragmentation in both breeding and winter ranges. An international collaboration, the Cerulean Warbler Technical Group, aims to develop a proactive conservation strategy through sound science and partnerships.
A WHO expert consultation suggests that traditional BMI cut-off points may not be suitable for Asian populations, who experience a higher risk of adverse health outcomes at lower BMI values. The consultation proposes intermediate public-health action points to address this disparity.
Researchers at Johns Hopkins Medicine have identified two new alleles and four existing ones among the Lakota Sioux tribe, increasing the likelihood of finding compatible organ donors within their population. This study could facilitate transplantation in Native American populations with high rates of diabetes and end-stage renal disease.
Researchers found that while black and white Americans have the same amount of early kidney disease, black patients are five times more likely to progress to end-stage renal disease. This disparity may be due to differences in blood pressure control, quality of care, and access to healthcare.
Using National Longitudinal Study of Adolescent Health data, researchers found that 18% and 15% of black and Hispanic females respectively became obese over the five-year exam period. Obesity rates among older adolescents were higher and more likely to remain stable or increase.
A study by John Bound found that health conditions limit work among all workers, but disproportionately affect minorities. Education plays a crucial role in income disparity, accounting for 52-84% of the gap between racial groups.
A mathematical model developed by Cornell University engineers quantifies language death and offers strategies to preserve endangered languages. The model attributes the decline of languages to competition for speakers, with higher-status languages like English dominating in multilingual societies.
A study by Harvard and Queensland universities found that 4.8 million deaths in 2000 were caused by smoking, affecting both developed and developing countries. The majority of these deaths were among men, especially in less-developed nations.
The Lancet presents six randomized controlled trials of heart disease drug interventions, highlighting potential benefits for patients in poor countries. The World Trade Organization's decision to allow poor nations to import low-cost generic drugs is seen as a game-changer for effective treatment accessibility worldwide.
A recent study found that the French eat smaller portions compared to Americans, which may contribute to their lower obesity rates and healthier diets. The researchers examined portion sizes at restaurants in Paris and Philadelphia, as well as single-serve foods sold in supermarkets.
A study published in the American Journal of Ophthalmology found that nearly 3.2 million women aged 50 and older in the US suffer from debilitating dry eye syndrome, which can lead to scarring, ulceration, and loss of vision. The disease is more common in women than men, with Hispanic and Asian women experiencing more severe symptoms.
A recent study reveals that physician assistants and primary care specialists like family physicians, nurse practitioners, and midwives are more likely to work in underserved areas. The researchers found a strong correlation between these professions and the provision of healthcare services in rural and urban shortage areas.
A study by Penn State researchers suggests that ancestry mix may be a key factor in obesity prevalence among African-American women. The analysis found an association between body mass index and West African ancestry, with implications for understanding the genetic basis of health disparities.
Researchers found exercise had a bigger emotional boost for those with high neuroticism measures, suggesting it could benefit individuals with psychological difficulties. The study also found the link between physical activity and mood was independent of daily events.
A new study examines how much of the nation's population lives within a certain distance of each county's center, revealing that areas in the South and West are making inroads. The leading edge of top-tier accessibility has inched southward from the Midwest and Northeast to include significant portions of North Carolina and Tennessee.
A new study reveals that modern humans originated from a small ancestral population in sub-Saharan Africa, with genetic splits occurring between hunter-gatherer populations and African farming people around 70,000-140,000 years ago. This finding supports the 'out-of-Africa' theory and provides insights into human migration patterns.
The world's population is aging rapidly, with a quarter of the US population expected to be over 65 by 2030. Various models of care are discussed, including those in the UK, USA, Germany, and Italy. Governments must take initiative to configure or restructure long-term care, examining social and ethical values and public policies on el...
A new mutation, R245X, has been identified as a significant cause of USH1 in the Ashkenazi Jewish population. Early diagnosis through molecular screening can lead to earlier intervention, including cochlear implants and ophthalmologic evaluations, improving the quality of life for affected children.
A study published in the Journal of Infectious Diseases found that people undergoing hemodialysis are 257 times more likely to contract Staphylococcus aureus (ISA) than the general population. Those with HIV, solid organ transplant recipients, and heart disease patients are also at increased risk.
A new study investigates the likelihood that physical activity level regulation with aging is controlled, in part, by genetic factors. The research found significant differences between strains of female mice in physical activity measurements, suggesting a genetic influence on age-related changes in daily physical activity levels.
Researchers will evaluate patients in West Virginia clinics to determine the impact of environmental, social, and economic factors on oral health. The study aims to identify risk factors contributing to high oral disease incidence in Appalachia.
A new study has found that African Americans are at higher risk of developing hypertensive retinopathy, a sign of severe hypertension. The study, which included over 15,000 participants, found that racial differences in blood pressure levels and hypertension severity were the main factors contributing to this disparity.
A Mayo Clinic study found that total hip replacement surgery can significantly improve the quality of life for patients over 90 years old. The study, which reviewed medical records from 1970 to 1997, showed that patients experienced substantial relief of pain and functional improvement after surgery.
A Wake Forest study found a high level of food insecurity among farm workers, especially those with children. The researchers recommend that agricultural employers, health and social service providers, and churches provide access to higher quality food for farm worker families to prevent future health problems.
Researchers found that mutations causing lysosomal storage diseases are no more common than other inherited diseases in the Ashkenazi Jewish population, indicating a lack of selective advantage. The study suggests that these disease-causing mutations were present in the ancestors of Ashkenazi Jews and were passed down through generations.
A study by American College of Emergency Physicians found that only half of emergency department visits are paid, with payments decreasing from 60.3% to 53% between 1996 and 1998. The decline threatens the ability of emergency departments to provide care to all patients regardless of ability to pay.
The study found significant differences between Mexican Americans and non-Hispanic whites in conditions increasing stroke risk, such as diabetes and blood-thinning drug use. Understanding these differences can help tailor stroke-prevention campaigns to the Hispanic community, increasing their effectiveness.
Expert Clarke emphasizes the importance of communication, infrastructure development, and international cooperation in preparing for asteroid impacts. He highlights the need for countries to have comprehensive civil defense plans and to prioritize population relocation and geographical redevelopment.
A study of 143 individuals over 60 years old found that those with longer telomeres lived four to five years longer than those with shorter ones. People with shorter telomeres had significantly higher mortality rates from heart disease and infectious diseases.
The Nutrigenomics Center will investigate how different foods interact with genes to increase the risk of diseases like type 2 diabetes, obesity, and heart disease. The center aims to identify genes controlled by naturally occurring chemicals in food to improve health management for individuals based on their unique genetic makeup.
Research suggests that felons and ex-felons could have voted differently in several presidential elections, including the 2000 Bush vs. Gore election, which might have reversed the outcome. This disenfranchisement disproportionately affects working-class poor and African Americans, traditionally voting Democratic.
Researchers found that tiny differences in DNA can identify geographic ancestry, contradicting the idea that self-reported ancestry is a reliable diagnostic tool. Genetic analysis of 1,056 individuals from 52 populations worldwide revealed more genetic similarities than previously thought.
A UC Riverside study of 2,055 brown recluse spiders in a Kansas home found no bites on occupants. The study suggests that many skin lesions misdiagnosed as 'brown recluse spider bites' are actually caused by other factors like infections or bug bites.
Researchers used satellite data to identify environments associated with human risk of hantavirus infection, finding that woody plants dominated high-risk sites. The study provides a way to monitor the environment for infectious disease risks and better understand why outbreaks happen where they do.
A recent study found that 62.2% of surveyed US adults are classified as incompletely healthy, with most suffering from poor physical health. The researchers identified key factors associated with complete health, including gender, age, marital status, education, and income.
A recent study predicts that the 2002 European seal plague outbreak may claim up to 10,000 harbour seals in Denmark and Sweden alone. The researchers used mathematical models to compare the 2002 findings to a previous 1988 outbreak, predicting similar impacts on the population.
The Robert Wood Johnson Foundation has awarded grants to ten dental schools to expand community-based education programs and increase enrollment of underrepresented minority students. The goal is to reduce gaps in dental care for underserved populations and create a more diverse dental workforce.
A nationwide longitudinal study of psychological responses to September 11 found that six months after the attacks, effects continued throughout the country among individuals not directly affected. Those with preexisting mental or physical health difficulties and greater exposure to the attacks showed continued stress symptoms over time.
Researchers find Americans spend nearly half of their adult life single or in noncoresidential dating relationships. Women are more likely to spend longer periods in single status, especially after age 40.
A new technique developed by WCS scientists allows for accurate population density estimation of jaguars in the wild. Using camera traps and unique spotting patterns, researchers can now focus conservation efforts on areas with highest cat densities.
Research suggests that even moderate drinking habits can increase hypertension risk in Japanese men, contrary to previous US studies. Obesity and genetic factors may contribute to this difference in findings.
The Northeast region experienced slow population growth during the 1990s, primarily due to high levels of domestic out-migration. New foreign immigration played a crucial role in offsetting this trend, with nearly 3.1 million new immigrants arriving in the region, accounting for over 100% of population growth.
A strong primary care system is crucial for a nation's health, with countries boasting robust systems showing the most favorable health indicators at young ages. Strong primary care is particularly important for children, as it significantly impacts postneonatal mortality rates and low birthweight.
A study conducted by the University of Illinois at Urbana-Champaign reveals that adolescent immigrants from Korea, Mexico, and Poland face distinct issues in the US. The research highlights how sports promote assimilation and materialism among these young immigrants, with varying degrees of emphasis depending on their cultural background.
Research by Penn State's King found that ever-divorced grandparents live farther away from their grandchildren than married grandparents. Grandfathers report less contact and higher conflict with grandchildren compared to grandmothers. However, a good parent-grandparent relationship can mitigate the negative influence of divorce.
The University of Michigan's new two-year Preventive Medicine Residency aims to address a critical shortage of medical epidemiologists. Residents will gain expertise in disease surveillance, outbreak investigation, and immunization plans, with initial participants already securing jobs in the field.
A new study found a striking connection between malformed amphibians and the presence of Ribeiroia, a parasitic infection. The parasite was linked to limb malformations in over 12,000 amphibians across 11 species, with Pacific treefrogs exhibiting the greatest number of abnormalities.
A study by the American College of Emergency Physicians finds that emergency department visits increased 27% from 1990-1999, with critically ill visits rising 59% and urgent visits increasing 36%. The number of beds per population also decreased, exacerbating the problem.