Syndrome co-occurrence and treatment outcomes in youth mental health clinics

Amanda Jensen Doss, John R. Weisz

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Despite widespread speculation that syndrome co-occurrence undermines treatment outcomes, this hypothesis has not been fully examined within clinical care settings. To address this gap, the authors investigated the relation between syndrome co-occurrence and outcome among 325 clinically referred youths. For every syndrome, higher initial severity was predictive of greater treatment gains and higher posttreatment symptom levels; contrary to speculation in the literature, co-occurrence effects were rare and modest in size, accounting for 0.6% of outcome variance on average. The results suggest that co-occurrence, though common in youth clinical care, is not an obstacle to treatment success in most cases. In addition to its substantive findings, the study illustrates how a dimensional approach can be used to shed new light on co-occurrence in clinical care.

Original languageEnglish (US)
Pages (from-to)416-425
Number of pages10
JournalJournal of consulting and clinical psychology
Issue number3
StatePublished - Jun 2006
Externally publishedYes


  • Diagnostic comorbidity
  • Syndrome co-occurrence
  • Treatment outcomes
  • Usual care
  • Youth psychotherapy

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Clinical Psychology


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