نتایج جستجو برای: age dependency ratio
تعداد نتایج: 1211862 فیلتر نتایج به سال:
OBJECTIVES To determine if chronic oxygen dependency (discharge home on supplemental oxygen) in children with bronchopulmonary dysplasia (BPD; defined as requirement for supplemental O2 at 36 weeks postmenstrual age) predicts neurodevelopmental disability rates and growth outcomes at 36 months corrected age (CA). STUDY DESIGN Longitudinal cohort study. SETTING Southern Alberta regional cent...
Background: The main goal of this study is to determine the relationship between opium dependency and frequency of urolithiasis renal colics. Methods: In a cross sectional study we compared opium dependency in urolithiasis patients (case group) with non-urolithiasis patients (control group) and assessed urolithiasis related renal colics as risk factor to opium dependency prevalence. Dependency ...
In a simple growth model we explore the current and future growth effects of the population structure. Regional growth in 227 regions of 6 countries in central Europe (see Figure 1.0) is explored as how they depend on the young and old dependency ratio. The young dependency ratio (YDR) is defined as ratio of the less than 20 years old and the old dependency ratio (ODR) as the more than 60 years...
In recent years, increasing life expectancy and decreasing fertility rates in the wake of medical advances has led to the emergence of an aging phenomenon in the country, which is rising steeply. Now, the question is: what is the current state, how old are provinces in the country, and what proportion of the elderly are covered by social insurance and public support institutions? In this articl...
this study presents data on age structure, sex ratio, growth, length-weight relationships and condition factor of four populations (n=312) of two alburnoides species, collected in 2005 and 2006 from the tajan river (caspian sea basin), the ghara-chai and jajrud rivers (namak lake basin), and cheshmeh-ali spring (kavir basin) of iran. sex ratio of the fish, in the studied localities, except in ...
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