birth rate crude birth rate http://purl.bioontology.org/ontology/MESH/D001723 http://purl.obolibrary.org/obo/NCIT_C53345 https://en.wikipedia.org/wiki/Birth_rate https://www.wikidata.org/wiki/Q203516 Births in 1 year x 1,000/number of women aged 15-44 at midyear. CBR The ratio of live births in an area to the population of that area, expressed per 1000 people in the population per year. crude birth rates crude birthrate The Complete Dictionary of Sexology