Duration of untreated psychosis significantly associated with positive symptoms one year after treatment.

@article{Compton2004DurationOU,
  title={Duration of untreated psychosis significantly associated with positive symptoms one year after treatment.},
  author={Michael Compton},
  journal={Evidence-based mental health},
  year={2004},
  volume={7 4},
  pages={
          101
        }
}
Population: 200 people (mean age 23 years), out of the 278 people admitted to the Calgary Early Psychosis Program, who completed the one year follow up assessment. Eligible participants had experienced their first episode of psychosis (DSM-IV criteria using Structured Clinical Interview), had significant positive symptoms (rated >4 on Positive and Negative Syndrome Scale), and had received less than three months prior treatment.