The Collaborative Longitudinal Personality Disorders Study: baseline Axis I/II and II/II diagnostic co-occurrence
Version of Record online: 24 DEC 2001
Acta Psychiatrica Scandinavica
Volume 102, Issue 4, pages 256–264, October 2000
How to Cite
McGlashan, T. H., Grilo, C. M., Skodol, A. E., Gunderson, J. G., Shea, M. T., Morey, L. C., Zanarini, M. C. and Stout, R. L. (2000), The Collaborative Longitudinal Personality Disorders Study: baseline Axis I/II and II/II diagnostic co-occurrence. Acta Psychiatrica Scandinavica, 102: 256–264. doi: 10.1034/j.1600-0447.2000.102004256.x
- Issue online: 24 DEC 2001
- Version of Record online: 24 DEC 2001
- Accepted for publication March 22, 2000
- Cited By
- personality disorders;
- psychiatric disorders
Objective: To describe baseline diagnostic co-occurrence in the Collaborative Longitudinal Personality Disorders Study.
Method: Six hundred and sixty-eight patients were reliably assessed with diagnostic interviews for DSM-IV Axis I and II disorders to create five groups: Schizotypal (STPD), Borderline (BPD), Avoidant (AVPD), Obsessive-Compulsive (OCPD) and Major Depressive Disorder (MDD) without personality disorder (PD).
Results: Mean number of Axis I lifetime diagnoses was 3.4; STPD and BPD groups had more diagnoses than AVPD, OCPD, and MDD groups. Significant Axis I co-occurrences emerged for Social Phobia/AVPD, PTSD/BPD and Substance Use/BPD. Mean number of co-occurring PDs was 1.4; STPD had more than BPD group which had more than AVPD and OCPD groups. Significant PD co-occurrence emerged for: STPD/ Paranoid and Schizoid PDs, BPD with Antisocial and Dependent PDs, and lower frequency for OCPD/Antisocial PD.
Conclusion: Diagnostic co-occurrences generally followed base rates, while significant departures resemble those of controlled literature.