Articles tagged with Metaanalysis
Psychologists have found that facial expressions can influence emotional feelings, with smiling making people feel happier and scowling making them feel angrier. The study combined data from nearly 50 years of research involving over 11,000 participants.
A new study published in Advances in Nutrition reveals that refined grains are not associated with increased disease risk and premature death. Refined grain intake was found to have an inverse association with total cancer deaths and a statistically significant inverse association with all-cause death rate.
A meta-analysis of 473 patients found that weight loss reduces headache frequency, pain intensity, and disability in obese migraine sufferers. Weight loss through bariatric surgery or behavioral intervention also shows significant improvements.
A proposed blockchain-based platform can record researchers' workflows and track analysts' decisions in meta-analyses, facilitating transparency and reproducibility. This approach aims to identify inconsistencies between contradictory results by pinpointing individual timestamps of analytic decisions.
A study published in The Lancet reveals that consuming at least 25g to 29g of dietary fibre per day can reduce the risk of non-communicable diseases such as coronary heart disease, stroke, type 2 diabetes, and colorectal cancer by 16-24%. Whole grains also show promise in reducing mortality rates and incidence of these diseases.
A meta-analysis of nearly 80,000 firms across 20 countries found that independent audit committees offer the strongest protection against corporate misconduct. The study also showed that national corruption can undermine the effectiveness of board independence variants in curbing misconduct.
A systematic review and meta-analysis found that CoQ10 supplementation significantly reduced total-cholesterol, malondialdehyde, and creatinine levels in patients with chronic kidney disease. The treatment did not affect other metabolic markers, suggesting a potential therapeutic benefit for CKD patients.
Researchers found corticosteroids, biologics, and immunosuppressive agents to be effective for treating urticarial vasculitis. Antihistamines and other anti-inflammatory drugs were ineffective, contrary to common practice.
A systematic review and meta-analysis of non-digital board games found promising results in improving health-related knowledge and behaviors. The study evaluated 21 studies and revealed that board games can be a widely disseminable method for delivering the benefits of games for health.
Researchers used statistical tools to analyze data from 55 studies on dietary oils and found seed oils, such as sunflower oil and flaxseed oil, perform best in improving cholesterol. However, there are caveats, including the study only measured blood lipids and may not be applicable to clinical outcomes.
A systematic review and meta-analysis found that sexual minority adolescents are at a greater risk of attempted suicide compared to their heterosexual peers. The study estimated over 2.3 million heterosexual and 113,468 sexual minority adolescents from 35 studies conducted in 10 countries.
A Dartmouth analysis of multiple studies found that playing violent video games is associated with increases in physical aggression over time. The effect varies across ethnicity, with the largest observed among white participants and some noted among Asians, but no effect seen among Hispanics.
A large meta-analysis of over 191,000 postmenopausal women found that early menopause and premature ovarian failure are associated with a higher risk of developing type 2 diabetes. Women who begin menopause before age 40 are 50% more likely to develop the disease than those with normal menopause between ages 45-55.
Research explores digital media's effects on children, revealing enhanced phoneme learning and potential links to aggressive behavior. Early media exposure also affects attention in young minds.
Malnutrition affects more elderly people who are unmarried, separated or divorced. Marriage or being widowed tends to prevent malnutrition. Factors such as difficulties walking, coping with stairs, and hospital stays also contribute to the risk.
A recent study published by the European Society of Cardiology found that sleeping six to eight hours a night is most beneficial for heart health. The research, which analyzed data from over one million adults, suggests that both short and long sleepers have an increased risk of developing coronary artery disease or stroke.
Researchers from the Higher School of Economics conducted a meta-analysis of neuroimaging studies on working memory in children, revealing concordance in frontoparietal regions and unexpected findings in the prefrontal cortex. The study sheds light on the complex role of the insula and its potential impact on learning.
A systematic review analyzing the effects of walnut consumption on cardiovascular risk factors reveals significantly greater reductions in total cholesterol, LDL cholesterol, triglycerides, and apolipoprotein B compared to control diets. Walnut-enriched diets resulted in no adverse effects on body weight or blood pressure.
A meta-analysis of 42 studies found that an additional year of education correlates with an average increase of 3.394 IQ points, with effects lasting even into adulthood. The study's findings suggest that education has a long-lasting impact on intelligence, regardless of age.
A study by Michigan State University and Case Western Reserve University found that growth mindset interventions have little to no effect on academic achievement for typical students. The researchers suggest that the benefits of these interventions are overstated and that something other than mindset is causing the observed effects.
A systematic meta-analysis of New Zealand children and youth found associations between connected streets, lower residential density, and shorter distances to school. The study suggests that planning decisions for school locations and infrastructure improvements can contribute to increased active travel rates.
A recent study published in the British Journal of Sports Medicine found that men with highly physical jobs have an 18% higher risk of early death compared to those with inactive work. The analysis controlled for leisure time physical activity and found no such association among women.
A meta-analysis of four studies involving 19,464 African American participants found no association between sickle cell trait and ischemic stroke. The study aimed to understand sources of racial disparities in stroke risk among African Americans.
A systematic review of 49 randomized trials involving 23,098 participants found that various self-regulation interventions were effective in promoting emotional control, social skills, and learning. The review suggests that these programs can help maintain health and well-being throughout life.
A meta-analysis of 692 patients with vascular malformations found that they had lower scores on a health survey, indicating increased bodily pain and mental health distress compared to the general U.S. population. This study highlights the importance of addressing the quality of life for patients with these conditions.
A new systematic review and meta-analysis of previous research found limited data to support the effectiveness of digital rectal exams for prostate cancer screening. The study concluded that existing studies were at risk of bias due to poor quality evidence.
A new study found that while ecosystems can bounce back from large-scale disturbances, complete recovery is elusive. Passive recovery, which involves halting damaging practices, may be a more effective strategy than active restoration, especially for systems that don't require significant added help.
A new study published in the Addiction journal found that baclofen is no more effective than placebo in treating alcohol use disorders. The meta-analysis revealed higher abstinent rates, but other outcomes failed to show an effect, including reduced cravings and negative mood states.
A meta-analysis of 39 studies found that 1 in 7 young people under 18 send sexts, while 1 in 4 receive them. The study aimed to inform policy and future research on sexting among this age group.
Research suggests that social media use is correlated with slightly better school grades, particularly when used to discuss school-related topics. However, excessive social media use while studying can lead to poorer performance.
A new analysis of dozens of studies confirms protein supplements boost muscle mass and strength in weightlifters. However, their effectiveness decreases with age, highlighting the need for greater supplementation as people get older.
A new meta-analysis finds that 3-6 months of football training twice a week improves cardiovascular fitness by 3.51 mL/min/kg, lowers fat mass and resting heart rate, and reduces blood pressure in patients with hypertension and type 2 diabetes. Football is considered broad-spectrum medicine for lifestyle disease prevention.
A systematic review of nine studies found that standardized outcome measures like the Functional Independence Measure (FIM) and National Institutes of Health Stroke Scale (NIHSS) can predict stroke patients' discharge destinations. Patients with higher scores on these scales are more likely to be discharged home, while those with lower...
A meta-analysis of 15 years of research on action video games found that gamers showed significant improvements in cognitive abilities compared to non-gamers. The study suggests that playing action video games can train the brain and improve attention, spatial cognition, and reaction time.
A meta-analysis of hundreds of studies found a close relationship between parents' diet and offspring immunity across various animal species. The study suggests that poor nutrition can negatively impact disease resistance and that the effects of a parental diet can be inherited and maintained in offspring even on a normal diet.
A major international study found that vaginal progesterone administration to women with a mid-trimester sonographic short cervix reduces the rate of preterm birth at various gestational ages. The study also shows a reduction in neonatal complications, including very low birth weight and associated mortality.
A systematic review and meta-analysis published in JAMA Internal Medicine found that intensive blood pressure lowering treatment does not reduce death or cardiovascular disease in healthy individuals with a systolic blood pressure below 140mmHg. Treatment's beneficial effect is limited to trials in people with coronary heart disease.
Researchers analyzed 26 studies to find teams of friends outperformed groups of acquaintances or strangers on tasks requiring output maximization. Friendship groups coordinated tasks more effectively and were motivated by social interactions.
A new meta-analysis reveals that pregnant women with endometriosis are at higher risk for complications such as preterm birth, miscarriage, and small-for-gestational-age infants. The study also shows no association between endometriosis and gestational hypertension or preeclampsia.
A meta-analysis of debunking studies finds that a detailed counter-message is more effective than labeling misinformation as wrong. The study suggests involving audiences in scrutiny and counterarguing, introducing new information, and reducing arguments supporting misinformation.
A recent Northwestern University meta-analysis found striking stability in discrimination against African-Americans, despite a decline in Latino discrimination. Researchers analyzed data from field experiments of hiring between 1990 and 2015, finding that racial gaps in the labor force persist regardless of educational attainment.
A meta-analysis of 14 randomized controlled trials found that consuming EPA and DHA omega-3s reduced the risk of cardiac death by an average of 8%. Higher risk reduction was seen in individuals with high cholesterol or triglycerides, with a significant 17% reduction in these groups.
A new meta-analysis finds that having friends who smoke doubles the risk of adolescents starting and continuing to smoke. The study also reveals that peer influence is stronger in collectivist cultures, where adolescents are 4.3 times more likely to pick up smoking if their peers smoke.
Researchers call for consistent, robust standards for developing meta-analyses due to the dramatic increase in published studies. The American Heart Association recommends improving quality through technical guidelines and emphasizing the need for statistical expertise and clear justifications.
A systematic review found that lifestyle-modification programs have no significant impact on body weight in Arab countries, highlighting the need for adapted treatment programs. The studies cited methodological flaws, including linguistic and socioeconomic context neglect, and sociocultural obstacles to female participation.
A meta-analysis of 19,760 patients found S-DAPT associated with higher rates of myocardial infarction but lower TIMI major bleeding compared to L-DAPT. The optimal DAPT duration remains unclear due to varying patient risks and agent choices.
A new study found that sexual appeals in ads do not lead to increased brand memory or purchasing intentions. Instead, they often result in a negative attitude toward the brands featured.
Researchers analyzed 15 studies to investigate the relationship between sexting and sexual behavior. They found a weak statistical correlation, but couldn't determine if sexting influenced behavior. A common definition of sexting is lacking, highlighting the need for better study design.
A meta-analysis of three trials found that CD34+ stem cells improved exercise time by 80.5 seconds and reduced mortality by 24 months in patients with refractory angina. This therapy has been shown to be safe and effective for treating patients with limited options.
A recent meta-analysis of 57 studies involving over 25,000 participants found a weak to moderate link between social media activity and narcissistic tendencies. Grandiose narcissists are more likely to frequent social networking sites, whereas vulnerable narcissism is associated with insecurity and social withdrawal.
A meta-analysis of 404 pediatric patients found that antibiotic treatment was successful in 90.5% without increasing the risk of complications, but failure rates were higher in those with appendicolith; surgery is preferred for cases with this condition.
A meta-analysis by psychologists at the University of Basel found that patients' confidence in medical personnel has a positive effect on satisfaction, health-related behavior, and quality of life. However, the study did not find a clear-cut result when using objective clinical parameters or doctors' assessments.
A systematic review and meta-analysis of horseback riding interventions found significant improvements in balance, motor function, and quality of life for children and adults with neuromotor disabilities. The studies also showed benefits for patients with cerebral palsy, multiple sclerosis, and stroke.
A global study confirms that vitamin D supplementation reduces the risk of acute respiratory infections by cutting it in half for individuals with severe vitamin D deficiency. Regular supplementation also offers benefits, whereas occasional high doses show no significant impact.
A national meta-analysis by University of Texas at Arlington researcher Shima Hamidi found that single-family property values near transit stations rise only 2.3 percent, while multi-family and commercial properties can see up to 18 percent increase in value.
Researchers at Rosalind Franklin University of Medicine and Science found no significant difference in brain amygdala volume between healthy men and women in a meta-analysis of dozens of studies. The study's findings suggest that there is more similarity than difference between the sexes, with minimal overlap in key brain structures.
Psychologists analyzed links between provider burnout, quality of care, and patient safety across various medical disciplines. The meta-analysis found a consistent relationship between higher levels of burnout and lower levels of both quality and safety.
A review of 22 studies on general surgery residents found a pooled estimate of 18% attrition prevalence, with significant variation between studies. The most common causes of attrition were uncontrollable lifestyle and choosing another specialty.
A recent study published in the American Journal of Roentgenology found that CT scans have good sensitivity for detecting colon cancers with tumors beyond the bowel wall, but struggle with identifying nodal involvement. Thin-slice CT may be an effective tool in this area.
Researchers found a divergent association between alcohol consumption and different types of stroke, with heavy drinking increasing the risk of hemorrhagic stroke. Light to moderate alcohol consumption was associated with a lower risk of ischemic stroke but no effect on hemorrhagic stroke.