Occurrence 6 : Syn: Frequency. In epidemiology, a general term describing the frequency of a disease or other attribute or event in a population without distinguishing between incidence and prevalence
The International Occupational Safety and Health Information Centre, Glossary of Terms On Chemical Safety, World Health Organization (WHO), The International Programme on Chemical Safety IPCS: Division of Environmental Health (A joint venture of the United Nations Environment Programme UNEP, the International Labour Organisation ILO, and the World Health Organization WHO), Geneva, Switzerland 2012. http://www.ilo.org/legacy/english/protection/safew ork/cis/products/safetytm/glossary.ht,(ChemSfty - Brit) {479}