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Schizophr Res. 2006 Mar;83(1):29-40. Epub 2006 Feb 28.

Transition rates from schizotypal disorder to psychotic disorder for first-contact patients included in the OPUS trial. A randomized clinical trial of integrated treatment and standard treatment.

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  • 1Bispebjerg Hospital, Department Psychiatry, Bispebjerg, Bakke 23, DK-2400 Copenhagen NV, Denmark.



Only a few randomized clinical trials have tested the effect on transition rates of intervention programs for patients with sub-threshold psychosis-like symptoms.


To examine whether integrated treatment reduced transition to psychosis for first-contact patients diagnosed with schizotypal disorder.


Seventy-nine patients were randomized to integrated treatment or standard treatment. Survival analysis with multivariate Cox-regression was used to identify factors determinant for transition to psychotic disorder.


In the multivariate model, male gender increased risk for transition to psychotic disorder (relative risk=4.47, (confidence interval 1.30-15.33)), while integrated treatment reduced the risk (relative risk=0.36 (confidence interval 0.16-0.85)). At two-year follow-up, the proportion diagnosed with a psychotic disorder was 25.0% for patients randomized to integrated treatment compared to 48.3% for patients randomized to standard treatment.


Integrated treatment postponed or inhibited onset of psychosis in significantly more cases than standard treatment.

[PubMed - indexed for MEDLINE]
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