The impact of cannabis use on age of onset and clinical characteristics in first-episode psychotic patients. Data from the Psychosis Incident Cohort Outcome Study (PICOS).

@article{Tosato2013TheIO,
  title={The impact of cannabis use on age of onset and clinical characteristics in first-episode psychotic patients. Data from the Psychosis Incident Cohort Outcome Study (PICOS).},
  author={Sarah Tosato and Antonio Lasalvia and Chiara Bonetto and Rodolfo Mazzoncini and Doriana Cristofalo and Katia De Santi and Mariaelena Bertani and Sarah Saviana Bissoli and Lorenza Lazzarotto and Giovanna Marrella and Dario Lamonaca and Rosanna Riolo and Francesco Gardellin and Anna Urbani and Michele Tansella and Mirella Ruggeri},
  journal={Journal of psychiatric research},
  year={2013},
  volume={47 4},
  pages={438-44}
}
Cannabis use is frequent among first-episode psychosis (FEP) patients and has been associated with several clinical features. This study aimed in an FEP sample to determine whether cannabis use is associated with (1) a higher level of positive symptoms, a lower level of depression and a better premorbid adjustment, (2) an earlier age of onset, and a better premorbid IQ. The study was conducted within the framework of the Psychosis Incident Cohort Outcome Study (PICOS), a multisite collaborative… CONTINUE READING
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