Confounding 2 : A situation in which a measure of the effect of an exposure on risk is distorted because of the association of the exposure with other factor (s) that influence the outcome
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}