{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T09:03:51Z","timestamp":1770973431527,"version":"3.50.1"},"reference-count":17,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2007,12,14]],"date-time":"2007-12-14T00:00:00Z","timestamp":1197590400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Acta Psychiatr Scand"],"published-print":{"date-parts":[[2008,2]]},"abstract":"<jats:p><jats:bold>Objective:\u2002<\/jats:bold> Prevalence estimates of illicit drug use in psychotic disorders vary between studies, and only a few studies compared prevalence estimates with those in the general population.<\/jats:p><jats:p><jats:bold>Method:\u2002<\/jats:bold> Cross\u2010sectional study comparing 148 stable\u2010phase patients with schizophrenia or bipolar disorder with 329 representative general citizens of Oslo. A total of 849 patients from the same hospital department in the same time period constituted a patient reference group.<\/jats:p><jats:p><jats:bold>Results:\u2002<\/jats:bold> Lifetime illicit drug use was 44% higher (<jats:italic>P<\/jats:italic>\u2003&lt;\u20030.001) in study patients than in the general population sample; while lifetime use of amphetamine\/cocaine was 160% higher (<jats:italic>P<\/jats:italic>\u2003&lt;\u20030.001). No differences were found between user groups for sociodemographic characteristics.<\/jats:p><jats:p><jats:bold>Conclusion:\u2002<\/jats:bold> Patients with psychotic disorders in stable phase had a markedly higher lifetime use of any illicit substance, especially amphetamine\/cocaine, than the general population. They also seemed to use drugs more periodically. The same sociodemographic characteristics were associated with increased illicit drug use in both groups.<\/jats:p>","DOI":"10.1111\/j.1600-0447.2007.01135.x","type":"journal-article","created":{"date-parts":[[2010,8,17]],"date-time":"2010-08-17T11:51:43Z","timestamp":1282045903000},"page":"133-138","source":"Crossref","is-referenced-by-count":47,"title":["Illicit drug use in patients with psychotic disorders compared with that in the general population: a cross\u2010sectional study"],"prefix":"10.1111","volume":"117","author":[{"given":"P. A.","family":"Ringen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"I.","family":"Melle","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A. B.","family":"Birken\u00e6s","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. 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