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Estimated predictive values (negative) were generally high, whereas the estimated predictive value of a positive test ranged from 1 per cent for amphetamines to 100 per cent for hallucinogens and was only 38 per cent for marijuana, the most prevalent drug. <\/jats:p>","DOI":"10.2105\/ajph.78.7.817","type":"journal-article","created":{"date-parts":[[2008,11,29]],"date-time":"2008-11-29T13:03:17Z","timestamp":1227963797000},"page":"817-819","source":"Crossref","is-referenced-by-count":7,"title":["The estimated predictive value of screening for illicit drugs in the workplace."],"prefix":"10.2105","volume":"78","author":[{"given":"V E","family":"Wells","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"W","family":"Halperin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M","family":"Thun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"844","reference":[{"key":"p_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(75)92790-7"},{"key":"p_2","doi-asserted-by":"publisher","DOI":"10.1097\/00043764-198608000-00004"},{"key":"p_3","doi-asserted-by":"publisher","DOI":"10.1097\/00043764-198609000-00014"},{"key":"p_4","doi-asserted-by":"publisher","DOI":"10.1016\/S0015-7368(81)71414-2"},{"issue":"1","key":"p_5","first-page":"6","volume":"12","author":"Sohn D","year":"1970","journal-title":"JOM"},{"key":"p_6","doi-asserted-by":"publisher","DOI":"10.1001\/jama.1966.03110170061017"},{"issue":"5","key":"p_7","first-page":"1263","volume":"64","author":"Cole P","year":"1980","journal-title":"JNCI"},{"key":"p_8","unstructured":"Emit Drug Abuse Testing: Understanding Results. 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