The number of Asian residents has increased at a similar rate during the same time period and the Hispanic population in the U.S. has also continued to grow. Read more Resident population of the United States by sex and age as of July 1, 2023 (in millions) Age in yearsNumber of ...
By 2000 the Northeast will still have the oldest age distribution while the West will continue to have the youngest. 5) Between 2000 and 2010 the numbers of children under age 5 are projected to remain constant in the US while declining in the Northeast and Midwest and increasing in the ...
In 2023, the median age of the population of the United States was 39.2 years. While this may seem quite young, the median age in 1960 was even younger, at 29.5 years. The aging population in the United States means that society is going to have to find a way to adapt to the larger...
A number of studies have found that mortality rates are positively correlated with income inequality across the cities and states of the US. We argue that ... A Deaton,D Lubotsky - 《Working Papers》 被引量: 520发表: 2002年 Surveillance for violent deaths--national violent death reporting sys...
Small area and subnational population projections are important for understanding long-term demographic changes. I provide county-level population projections by age, sex, and race in five-year intervals for the period 2020–2100 for all U.S. counties. U
In the relative growth study of the small hermit crab Cestopagurus timidus a preliminary classification method, based on those of Lefkovitch (1976) and Noy... ME Manjon-Cabeza,JEG Raso - 《Spixiana》 被引量: 18发表: 1996年 The effects of experimentally manipulated yolk androgens on growth...
the availability of old-age care from “institutional mechanisms” so that a person does not need to rely on children later in life.[35] Demographic Transition * Throughout human history, population changes in various areas and nations have generally followed an observable pattern called “demog...
Over the past decade, the US population grew at the slowest rate since the 1930s, the Census Bureau said Monday, a remarkable slackening that was driven by a leveling off of immigration and a declining birthrate. The bureau also reported changes to the nation's political map: The long-runn...
(Fertility is not to be confused with fecundity—the theoretical maximum number of offspring that can be produced by a species member in a given time period. The sex ratio and age structure of a population affect fertility rates, because they constrain the number of individuals capable of ...
Further analysis indicates that the old-age dependency ratio (ODR), which measures the ratio of individuals aged 65 years and above to the working population aged 15–64 years, has also experienced a substantial upsurge, from 11.9% in 2010 to 21.8% in 2022. Of particular concern is the ...