title: Nomograms for simplified demographic calculations.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001699:Biometry; D001723:Birth Rate; D002648:Child; D002675:Child, Preschool; D003364:Costa Rica; D003710:Demography; D005006:Ethnicity; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008433:Mathematics; D008875:Middle Aged; D008962:Models, Theoretical; D009026:Mortality; D011158:Population Growth; D011247:Pregnancy; D014481:United States; D014798:Vital Statistics