Harrigan, S, McGorry, P, Krstev, H. Does treatment delay in first-episode psychosis really matter?
2003; 33: 97–110.
Harrison, G, Hopper, K, Craig, T, Laska, E, Siegel, C, Wanderling, J, et al. Recovery from psychotic illness: a 15- and 25-year international follow-up study. Br J Psychiatry
2001; 178: 506–17.
Linszen, D, Dingemans, P, Lenoir, M. Early intervention and a five-year follow-up in young adults with a short duration of untreated psychosis: ethical implications. Schizophr Res
2001; 51: 55–61.
Bottlender, R, Sato, T, Jager, M. The impact of the duration of untreated psychosis prior to first psychiatric admission on the 15-year outcome in schizophrenia. Schizophr Res
2009; 62: 37–44.
Birchwood, M, McGorry, P, Jackson, H. Early intervention in schizophrenia. Br J Psychiatry
1997; 170: 2–5.
Joseph, R, Birchwood, M. The national policy reforms for mental health services and the story of early intervention services in the United Kingdom. J Psychiatry Neurosci
2005; 30: 362–5.
Lieberman, JA, Fenton, WS. Delayed detection of psychosis: causes, consequences and effect on public health. Am J Psychiatry
2000; 157: 1727–30.
Department of Health. National Service Framework for Mental Health: Modern Standards and Service Models. Department of Health, 1999.
National Institute for Clinical Excellence. Schizophrenia: Core Interventions in the Treatment and Management of Schizophrenia in Primary and Secondary Care (CG1).
National Institute for Clinical Excellence, 2002.
Singh, SP, Wright, C, Burns, T, Joyce, E, Barnes, TRE. Developing early intervention services in the NHS: a survey to guide workforce and training needs. Psychiatr Bull
2003; 27: 254–8.
Craig, T, Garety, P, Power, P, Rahaman, N, Colbert, S, Fornells-Ambrojo, M, et al. The Lambeth Early Onset (LEO) Team: randomised controlled trial of the effectiveness of specialised care for early psychosis. BMJ
2004; 329: 1067–71.
Grawe, RW, Falloon, IR, Widen, JH, Skogvoll, E. Two years of continued early treatment for recent-onset schizophrenia: a randomised controlled study. Acta Psychiatr Scand
2006; 114: 328–36.
Marshall, M, Rathbone, J. Early Intervention for psychosis. Cochrane Database Syst Rev
2006; 4: CD004718.
Penn, DL, Waldheter, EJ, Perkins, DO, Mueser, KT, Lierberman, JA. Psychosocial treatment for first-episode psychosis: a research update. Am J Psychiatry
2005; 162: 2220–32.
National Collaborating Centre for Mental Health. Schizophrenia: Core Interventions in the Treatment and Management of Schizophrenia in Adults in Primary and Secondary Care
. National Institute for Health and Clinical Excellence, 2009.
Scottish Intercollegiate Guidelines Network. SIGN 50: A Guideline Developer's Handbook. SIGN, 2001.
Kay, SR, Fiszbein, A, Opler, LA. The Positive and Negative Syndrome Scale (PANSS) for schizophrenia. Schizophr Bull
1987; 13: 261–76.
Ventura, J, Lukoff, KH, Neuchterlein, KH, Liberman, RP, Green, MF, Shaner, A. Manual for the Expanded Brief Psychiatric Rating Scale. Int J Methods Psychiatr Res
1993; 3: 227–44.
Andreasen, NC. The Scale for the Assessment of Positive Symptoms (SAPS).
University of Iowa, 1984.
Andreasen, NC. The Scale for the Assessment of Negative Symptoms (SANS).
University of Iowa, 1984.
Altman, DG. Confidence intervals for the number needed to treat. BMJ
1998; 317: 1309–12.
Schmidt, FL, Oh, IS, Hayes, TL. Fixed- versus random-effects models in meta-analysis: model properties and an empirical comparison of differences in results. Br J Math Stat Psychol
2009; 62: 97–128.
Kuipers, E, Holloway, F, Rabe-Hesketh, S, Tennakoon, L. An RCT of early intervention in psychosis: Croydon Outreach and Assertive Support Team (COAST). Soc Psychiatry Psychiatr Epidemiol
2004; 39: 358–63.
Petersen, L, Jeppesen, P, Thorup, A, Abel, MB, Ohlenschlaeger, J, Christensen, TO, et al. A randomised multicentre trial of integrated versus standard treatment for patients with a first episode of psychotic illness. BMJ
2005; 331: 602–8.
Jackson, H, McGorry, P, Edwards, J, Hulbert, C, Henry, L, Harrigan, S, et al. A controlled trial of cognitively oriented psychotherapy for early psychosis (COPE) with four-year follow-up readmission data. Psychol Med
2005; 35: 1295–306.
Lewis, S, Tarrier, N, Haddock, G, Bentall, R, Kinderman, P, Kingdon, D, et al. Randomised controlled trial of cognitive–behavioural therapy in early schizophrenia: acute-phase outcomes. Br J Psychiatry
2002; 181 (suppl 43): s91–7.
Wang, C, Li, Y, Zhao, Z, Pan, M, Feng, Y, Sun, F, et al. Controlled study on long-term effect of cognitive behavior intervention on first episode schizophrenia. Chinese Ment Health J
2003; 17: 200–2.
Lecomte, T, Leclerc, C, Corbière, M, Wykes, T, Wallace, CJ, Spidel, A. Group cognitive behavior therapy or social skills training for individuals with a recent onset of psychosis? Results of a randomized controlled trial. J Nerv Ment Dis
2009; 196: 866–75.
Goldstein, MJ, Rodnick, EH, Evans, JR, May, PRA, Steinberg, MR. Drug and family therapy in the aftercare of acute schizophrenics. Arch Gen Psychiatry
1978; 35: 1169–77.
Leavey, G, Gulamhussein, S, Papadopoulous, C, Johnson-Sabine, E, Blizard, B, King, M. A randomized controlled trial of a brief intervention for families of patients with a first episode of psychosis. Psychol Med
2004; 34: 423–31.
Zhang, M, Wang, M, Li, J, Phillips, MR. Randomised-control trial of family intervention for 78 first-episode male schizophrenic patients. An 18-month study in Suzhou, Jiangsu. Br J Psychiatry Suppl
1994; 165 (suppl 24): 96–102.
Gleeson, JFM, Cotton, SM, Alvarez-Jimenez, D, Wade, D, Gee, D, Crisp, K, et al. A randomized controlled trial of relapse prevention for first-episode psychosis patients. J Clin Psychiatry
2009; 70: 477–86.
Morrison, AP. Cognitive behaviour therapy for first episode psychosis: good for nothing or fit for purpose?
2009; 1: 103–12.
Álvarez-Jiménez, M, Gleeson, JF, Cotton, S, Wade, D, Gee, D, Pearce, T, et al. Predictors of adherence to cognitive-behavioural therapy in first episode psychosis. Can J Psychiatry
2009; 54: 710–8.
Perkins, DO, Gu, H, Boteva, K, Lieberman, JA. Relationship between duration of untreated psychosis and outcome in first-episode schizophrenia: a critical review and meta-analysis. Am J Psychiatry
2005; 162: 1785–804.
Barnes, TRE, Leeson, VC, Mutsatsa, SH, Watt, HC, Hutton, SB, Joyce, EM. Duration of untreated psychosis and social function: 1-year follow-up study of first-episode schizophrenia. Br J Psychiatr
2008; 193: 203–9.
Farooq, S, Large, M, Nielssen, O, Waheed, W. the relationship between the duration of untreated psychosis and outcome in low-and-middle income countries: a systematic review and meta analysis. Schizophr Res
2009; 109: 15–23.
Joa, I, Johannessen, JO, Auestad, B, Friis, S, McGlashan, T, Melle, I, et al. The key to reducing duration of untreated psychosis: information campaigns. Schizophr Bull
2008; 34: 466–72.
McGorry, PD. Evaluating the importance of reducing the duration of untreated psychosis. Aust N Z J Psychiatry
2000; 34: S145–9.
Birchwood, M, Iqbal, Z, Chadwick, P, Trower, P. Cognitive approach to depression and suicidal thinking in psychosis. I. Ontogeny of post-psychotic depression. Br J Psychiatry
2000; 177: 516–28.
Thornicroft, G. Tackling discrimination. Ment Health Today
2006; Jun: 26–9.
Kuipers, E. The case for early, middle and late intervention in psychosis. World Psychiatry
2008; 7: 158–9.
van Os, J, Kapur, S. Schizophrenia. Lancet