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Health Surveys
A systematic collection of factual data pertaining to health and disease in a human population within a given geographic area.
Year introduced: SANITARY SURVEYS was heading 1963-1966
Dental Health Surveys
A systematic collection of factual data pertaining to dental or oral health and disease in a human population within a given geographic area.
Year introduced: 1972
Demography
Statistical interpretation and description of a population with reference to distribution, composition, or structure.