Pub. date: 2008 | Online Pub. Date: May 28, 2008 | DOI: 10.4135/9781412963930 | Print ISBN: 9781412941655 | Online ISBN: 9781412963930| Publisher:SAGE Publications, Inc.About this encyclopedia
Birth rates are measures used by social scientists and journalists to provide some indication of the role that new births contribute to a country's total population growth each year, as well as potential future increases when the new cohort reaches childbearing age. The most common form is the crude birth rate (CBR), which is crude in the sense that it compares the number of births to the number of men, women, and children in a given society even though only women of certain ages can reasonably be expected to give birth. The CBR is usually expressed as the number of births in a given period for every 1,000 live persons counted in the midpoint of that ...