Evaluating the importance of reducing the duration of untreated psychosis

References

• Johnstone EC, Crow TJ, Johnson AL, Macmillan JF. The Northwick Park study of first episodes of schizophrenia: 1. Presentation of the illness and problems relating to admission. British Journal of Psychiatry 1986; 148: 115–120
   PubMed Web of Science ®Google Scholar
• Loebel AD, Lieberman JA, Alvir JM, Mayerhoff DI, Geisler SH, Szymanski SR. Duration of psychosis and outcome in first‐episode schizophrenia. American Journal of Psychiatry 1992; 149: 1183–1188
   PubMed Web of Science ®Google Scholar
• Beiser M, Erickson D, Fleming JA, Iacono WG. Establishing the onset of psychotic illness. American Journal of Psychiatry 1993; 150: 1349–1354
   PubMed Web of Science ®Google Scholar
• Larsen TK, McGlashan TH, Moe LC. First‐episode schizophrenia: I. Early course parameters. Schizophrenia Bulletin 1996; 22: 241–256
   PubMed Web of Science ®Google Scholar
• McGorry PD. The Centre for Young People's Mental Health: blending epidemiology and developmental psychiatry. Australasian Psychiatry 1996; 4: 243–247
   Google Scholar
• Haas G, Garratt L, Sweeney J. Delay to antipsychotic medication in schizophrenia: impact on symptomatology and clinical course of illness. Journal of Psychiatric Research 1998; 32: 151–159
   PubMed Web of Science ®Google Scholar
• McGlashan T. Duration of untreated psychosis in first‐episode schizophrenia: marker or determinant of course?. Biological Psychiatry 1999; 46: 899–907
   PubMed Web of Science ®Google Scholar
• Ho BC, Andreasen NC, Flaum M, Napoulos P, Miller D. Untreated initial psychosis: its relation to quality of life and symptom remission in first‐episode schizophrenia. American Journal of Psychiatry 2000; 157: 808–815
   PubMed Web of Science ®Google Scholar
• Craig TJ, Bromet EJ, Fennig S, Tanenberg‐Karant M, Lavelle J, Galambos N. Is there an association between duration of untreated psychosis and 24‐month clinical outcome in a first‐admission series?. American Journal of Psychiatry 2000; 157: 60–66
   PubMed Web of Science ®Google Scholar
• Kraemer HC, Yesavage JA, Taylor JL, Kupfer D. How can we learn about developmental processes from cross‐sectional studies, or can we?. American Journal of Psychiatry 2000; 257: 163–171
   Web of Science ®Google Scholar
• Friis S, Melle I, Haahr U, et al. Threats to validity in outcome studies of early intervention in schizophrenia. Schizophrenia Research 1999; 36: 340–342
   Web of Science ®Google Scholar
• Vaglum P, Larsen TK, Friis S, et al. Are the long DUP patients different when recruited in an early detection system compared with a detection system as usual?. 2nd International Conference on Early Psychosis ‐Future Possible’, New York, March–April, 31–22000
   Google Scholar
• Wyatt R. Neuroleptics and the natural course of schizophrenia. Schizophrenia Bulletin 1991; 17: 325–351
   PubMed Web of Science ®Google Scholar
• Lieberman J, Sheitman B, Kinon B. Neurochemical sensitization in the pathophysiology of schizophrenia: deficits and dysfunction in neuronal regulation and plasticity. Neuropsychopharmacology 1997; 17: 205–229
   PubMed Web of Science ®Google Scholar
• Harrigan SM, McGorry PD, Krstev H. Does treatment delay in first‐episode psychosis really matter?. Schizophrenia Research 2000; 41: 177
   Web of Science ®Google Scholar
• Carbone S, Harrigan S, McGorry P, Curry C, Elkins K. Duration of untreated psychosis and 12‐month outcome in first‐episode psychosis: the impact of treatment approach. Acta Psychiatrica Scandinavica 1999; 100: 96–104
   PubMed Web of Science ®Google Scholar
• Wyatt R, Green MF, Tuma AH. Long‐term morbidity associated with delayed treatment of first admission schizophrenic patients: a re‐analysis of the Camarillo State Hospital data. Psychological Medicine 1997; 27: 261–268
   PubMed Web of Science ®Google Scholar
• May P, Tuma A, Yale C, Potepan P, Dixon W. Schizophrenia: a follow‐up study of results of treatment, II. Hospital stay over two to five years. Archives of General Psychiatry 1976; 33: 481–486
   PubMed Web of Science ®Google Scholar
• Waddington JL, Youssef HA, Kinsella A. Sequential cross‐sectional and 10 year prospective study of severe negative symptoms in relation to duration of initially untreated psychosis in chronic schizophrenia. Psychological Medicine 1995; 25: 849–857
   PubMed Web of Science ®Google Scholar
• Scully L, Coakley G, Kinsella A, Waddington JL. Psychopathology, executive (frontal) and general cognitive impairment in relation to duration of initially untreated versus subsequently treated psychosis in chronic schizophrenia. Psychological Medicine 1997; 27: 1303–1310
   PubMed Web of Science ®Google Scholar
• Verdoux H, van Os J, Maurice‐Tison S, Gay B, Salamon R, Bourgeois M. Is early adulthood a critical stage for psychosis proneness? A survey of delusional ideation in normal subjects. Schizophrenia Research 1998; 29: 247–254
   PubMed Web of Science ®Google Scholar
• McGlashan T. Early detection and intervention with schizophrenia: research. Schizophrenia Bulletin 1996; 22: 327–345
   PubMed Web of Science ®Google Scholar
• McGorry P, Edwards J, Harrigan S, Jackson H. Duration of untreated psychosis in first‐episode psychosis: interpreting its influence. Schizophrenia Research 1999; 36: 50
   Web of Science ®Google Scholar
• Johannessen J, Larsen T, Horneland M, et al. Strategies for reducing duration of untreated psychosis. Schizophrenia Research 1999; 36: 342–343
   Web of Science ®Google Scholar
• Larsen T, Johannessen J, Guldberg C, Opjordsmoen S, Vaglum P, McGlashan T. Early intervention programs in first‐episode psychosis and reduction of duration of untreated psychosis (DUP). Schizophrenia Research 1999; 36: 344–345
   Web of Science ®Google Scholar
• Van Os J, Ravelli A, Bijl R. Evidence for a psychosis continuum in the general population. Schizophrenia Research 1999; 36: 57–58
   Web of Science ®Google Scholar
• Padmavathi R, Rajkumar S, Srinivasan T. Schizophrenic patients who were never treated: a study in an Indian urban community. Psychological Medicine 1998; 28: 1113–1117
   PubMed Web of Science ®Google Scholar
• Yung A, McGorry P, McFarlane C, Jackson H, Patton G, Rakkar A. Monitoring and care of young people at incipient risk of psychosis. Schizophrenia Bulletin 1996; 22: 283–303
   PubMed Web of Science ®Google Scholar
• Appelbaum PS, Grisso T. The Macarthur competence assessment tool: clinical research manual. Professional Resource Press, Sarasota 1998
   Google Scholar