Structure Age Article For Free

It is common in demography to split the population into three broad age groups: children and young adolescents (under 15 years old) the working-age population (15-64 years) and. the elderly population (65 years and older)

Age should be reported as part of the description of participants in the paper's Method section. Be specific in providing age ranges, means, and medians. Avoid open-ended definitions such as ?under 18 years? or ?over 65 years,? unless referring, for instance, to broad research study eligibility criteria.

An age structure diagram for a stable population is shaped like a dome or a hill. Other terms for this type of growth include zero growth, stationary, and constant. A population that is declining has relatively few younger individuals. This pattern is seen in populations with low birth and death rates.

Example of an age structure with a diminishing population People aged 30-44 (upper reproductive years) make up 19% of the population; people aged 15-29 (lower reproductive years) make up 15% of the population; and people aged 0-14 (pre-reproductive years) make up just 13% of the population.

This is rarer than the previous examples, but sometimes you need to describe an age group in a range. In order to make your writing easy to read and understand, keep long hyphenated noun phrases to a minimum. Instead of, for example, ?20-to-45-year-olds,? consider simplifying the phrase to ?people ages 20 to 45.?

The age structure of a population refers to the proportionate numbers of people in different age categories in a given population for a defined time. It is a natural characteristic of a population in a country or a region. The age structure is closely related to the birth rate, death rate and migration of a population.

Demographics of the United StatesUnder 18 years22.2% (2021)18?44 years35.9% (2021)45?64 years25.2% (2021)65 and over16.8% (2021)17 more rows