Sentences with phrase «estimate the mean age»

Studies using SF6 to estimate the mean age of stratospheric air have assumed the influence of mesospheric photochemical destruction is negligible.

Not exact matches

Kevin Page, the parliamentary budget officer, recently estimated that an aging population — which means a smaller tax haul and bigger health and other outlays — will leave Ottawa and the provinces with a $ 46 - billion - a-year fiscal gap to fix by cutting spending or hiking taxes.

Just because radiocarbon dating has flaws does not mean the dozen other methods for dating objects are automatically bogus which is why the scientific community believes the 4.5 billion year age of the earth, it's because they did not use just a single method of testing to estimate that age, they used several different methods which all confirmed the same approximate age.

The committee took a more cautious route, adopting 1,100 milligrams of calcium daily as the «estimated average requirement» for all children aged nine to 18, meaning the amount that would ensure that at least half the children in that age group get the calcium they require.

Estimated cognitive test mean score differences according to breastfeeding status at age 6 months are given in Table 5.

Two prominent studies find modest effects, in one case estimating that each 1 % increase in the share of migrants in the UK working age population leads to a 0.6 % decline in the wages of the 5 % lowest paid workers, which would mean about 3p less per hour for someone earning just over the minimum wage of # 6.19.

This means that by taking an over-the-counter medication, people can ward off a disease that, according to Alzheimer's Disease International's World Alzheimer Report 2016, affects an estimated 47 million people worldwide, costs health care systems worldwide more than US$ 818 billion per year and is the fifth leading cause of death in those aged 65 or older.

There are many other causes of infertility that require other means to address, Adashi said, but by some estimates there are also millions of people, age 50 and younger, whom Clomid helped to make possible.

The study estimates age - adjusted diabetes prevalence for 200 countries — meaning that researchers adjusted the results to account for diabetes becoming more common as a person ages and for some countries having older populations.

Because Earth formed 4.5 billion years ago and oceans formed about 4.4 billion years ago, if the researchers» estimates for the fossils» ages are correct, it would mean there was «an almost instantaneous emergence of life.»

«The extraordinarily young age of this lunar sample either means that the Moon solidified significantly later than previous estimates, or that we need to change our entire understanding of the Moon's geochemical history,» Carlson said.

Furthermore, the global intrinsic oscillations provide a means to discern red - giant stars in the pre-helium core burning from the ones in the helium core burning phase and provide an estimate of stellar ages, a key ingredient for galactic studies.

Indeed, if one accepts a very liberal risk level of 50 % for mean global warming of 2 °C (the guiderail widely adopted) since the start of the industrial age, then under midrange IPCC climate sensitivity estimates, then we have around 30 years before the risk level is exceeded.

The aim of this study was to estimate the prevalence of psychostimulant use in the French medical community and their motives.A population - based cross-sectional study using a self - administered online survey was done.A total of 1718 French students and physicians (mean age, 26.84 ± 7.19 years, 37.1 % men) were included.

By some estimates, 1 in 3 people over the age of 50 are on a statin drug, and recent prescribing guideline changes mean that millions more healthy people could soon be taking these pills.

Estimated median (131,132) or mean (82) legume intake of U.S. adults aged ≥ 19 y.

Senior Corps» Foster Grandparents program provides an opportunity for volunteers age 55 and older to serve as mentors and tutors for students.39 In 2016, an estimated 24,000 Foster Grandparents volunteers served approximately 200,000 students.40 Similarly, in 2016, AmeriCorps VISTA volunteers were approved to provide capacity - building assistance to more than 2,900 education - related project sites.41 Cutting funding for the CNCS would mean eliminating a substantial amount of necessary support for traditional public and public charter schools and would hurt low - income students across the country.

According to the Economic Policy Institute, the mean retirement savings for working - age families is $ 95,776 — a long way from the $ 738,400 that Merrill Lynch estimates the average retiree needs.

However, the variances of the terms being averaged arenot the same because of the adjustment step and this means that any confidence intervals for the estimate may vary from year to year depending on the ages of the trees contributing to the that year's average.

Problems which arise in the RCS method from the use of mean ring width at a specific ring age to estimate the growth rates of trees are discussed in detail in Chapter 5.

Table 4 shows estimated marginal mean (SD) PedsQL scores after adjustment for age, sex, maternal education, and disadvantage index.

Univariate generalized linear models were used to determine the estimated marginal means of the PedsQL scales and subscales adjusting for the child's age, sex, maternal education, and disadvantage index as covariates.

Two hierarchical multiple regressions were calculated, both of which included estimated METs per week, mean choice reaction time, age, and gender as predictors at the first level and the five NEO-FFI scores at the second - level.

Several studies have addressed the validity of the parent - reported SDQ in school - aged samples, predominantly confirming the intended 5 - factor structure.5, 6 A 3 - factor configuration of externalizing (conduct problems and hyperactivity), internalizing (emotional and peer problems), and prosocial factors has also been proposed and suggested for use in epidemiologic studies and in low - risk populations.7, 8 The internal reliability of SDQ subscales has been predominantly examined by using Cronbach's α, a measure of the interrelatedness of items; however, α estimates are a lower bound for reliability and is often underestimated.9 A meta - analytic review reported weighted mean α coefficients extracted from 26 studies that showed generally modest reliabilities for parent reports (0.53 < α < 0.76).10 McDonald's ω, which estimates the proportion of a scale measuring a construct, typically yields higher reliability estimates but has rarely been used to assess reliability of the SDQ.

Attachment to sibling and partner as a function of sibling type (estimated marginal means corrected for age).