Mathers D C, Ghodse A H, Caan A W, Scott S A
Department of Addictive Behaviour, St George's Hospital Medical School, London, UK.
Br J Addict. 1991 Jun;86(6):779-84. doi: 10.1111/j.1360-0443.1991.tb03104.x.
A sample of 908 patients drawn from two London Psychiatric Hospitals is described in terms of age, sex, self-reported drug and alcohol history, drug urinalysis results and initial psychiatric diagnosis. Some (34.5%) of respondents admitted to using cannabis at least once in their lifetime and 13% of those tested had urines positive for cannabis on admission. Cannabis use is commoner in young males. These is a higher likelihood that an initial diagnosis of 'psychosis' will be made at admission if patients either report use of cannabis or present a urine sample positive for cannabis.
对从两家伦敦精神病医院抽取的908名患者样本，按照年龄、性别、自我报告的药物和酒精使用史、药物尿液分析结果以及初始精神病诊断进行了描述。部分（34.5%）受访者承认一生中至少使用过一次大麻，且13%的受测者入院时尿液大麻检测呈阳性。大麻使用在年轻男性中更为常见。如果患者报告使用过大麻或尿液样本大麻检测呈阳性，那么入院时初步诊断为“精神病”的可能性更高。
