Articles tagged with Standard Deviation
A study of 370 patients undergoing elective surgery found that those with higher levels of awareness about anesthesia had better understanding of general and local anesthesia. Patients who underwent surgeries related to eyes, nose, and throat scored higher on the knowledge test due to limited sources of information.
Researchers found associations between prenatal vitamin and metal exposures and epigenetic aging biomarkers in early life. A one standard deviation increase in essential metals was associated with lower Horvath EAA at birth, while arsenic was linked to greater EAA at birth and in childhood.
A team of researchers from Xi'an Jiaotong-Liverpool University and other institutions has identified a flexible and user-friendly model for predicting flood frequency in a changing environment. The fractional polynomial-based regression method is more effective than existing models, which often fail to account for factors like climate ...
A new study found that academic scientists prioritize social impact and intellectual challenge over financial gain when engaging in commercial activities. In life sciences, a strong desire for social impact drives patent applications, while engineers are motivated by intellectual challenge and peer recognition.
A study published in Neurology suggests that small blood vessel changes in the eyes at age 60 may predict cognitive decline by age 80. The researchers used a retinal camera to take photos of participants' eyes and found that those with moderate to severe retinopathy had bigger drops in memory and thinking test scores over time.
A new study by MIT economists refines the measurement of school quality using a novel approach to Value-Added Models. By leveraging random assignment of students to schools, they found that conventional VAMs underestimate improvement at some schools but provide a ballpark figure for others.
Two randomized trials found that zinc lozenges reduced common cold duration by an average of 4.0 days and 1.77 days, but applying these effects to placebo groups resulted in impossible durations when using absolute scales. In contrast, percentage effects of 43% and 25% were realistic and more informative for communicating findings.
A study by University of Texas at Austin economists found that banning cellphones in schools increases student test scores, with a 6.41% improvement in overall performance. Low-achieving and special education needs students saw the greatest gains, with test score improvements of 14.23% and 10-12%, respectively.
A study found that growth screening parameters can accurately detect celiac disease in children. Girls with CD were shorter than their peers two years prior to diagnosis, while boys were shorter one year prior.
A new study found that terrorist attacks decrease fertility rates by reducing both expected children and live births. The researchers used a panel data set of 170 countries to measure the effects of terrorism on Total Fertility Rates (TFR) and Crude Birth Rate (CBR).
Research found that every extra hour of TV beyond recommendations decreases vocabulary and math skills, classroom engagement, victimization by classmates, and physical prowess at kindergarten. Existing viewing recommendations from the American Academy of Pediatrics are not sufficient to prevent these negative effects.
In a rotating curved pipe, particle distribution changes significantly due to centrifugal force, affecting coagulation and dispersion. With Coriolis and centrifugal forces aligned, particles concentrate near the outside edge, increasing in size over time.
A new study by Katie Baird finds that Cuba's government-run baseball system exploits its players, who generate little profit for the state. The Cuban League also lacks competitiveness, with teams being less evenly balanced than in the US Major Leagues.
A study of 52 patients found no clinically significant cognitive decline after CABG surgery, contrary to previous reports. The researchers attributed the lack of decline to general medical care and reduced vascular risk factors.