REFERENCES
- Chalmers I. Assembling comparison groups to assess the effects of health care. J R Soc Med 1997;90:379–86.
- Adams CE, Duggan L, Wahlbeck K, White P. The Cochrane Schizophrenia Group. Schizophr Res 1998;33:185–6.
- Thomley B, Adams CE. Content and quality of 2000 controlled trials in schizophrenia over 50 years. Br Med J 1998;317:1181–4.
- Schulz KF, Chalmers I, Hayes RJ, Altman DG. Empirical evidence of bias: dimensions of methodological quality associated with estimates of treatment effects in controlled trials. JAMA 1995;273:408–12.
- Adams CE, Coutinho E, Duggan L, Wahlbeck, K, White P. Schizophrenia module of The Cochrane Database of Systematic Reviews. In: The Cochrane Library, Issue 1. Oxford: Update Software; 1999.
- Jadad AR, Moore RA, Carroll D, Jenkinsin C, Reynolds DJM, Gavaghan DJ, et al. Assessing the quality of reports of randomized clinical trials: is blinding necessary? Contr Clin Trials 1996;17:1–12.
- Moher D, Pham B, Jones A, Cook DJ, Jadad AR, Moher M, et al. Does quality of reports of randomised trials affect estimates of intervention efficacy reported in meta-analyses? Lancet 1998;352:609–13.
- Johnson T. Clinical trials in psychiatry: background and statistical perspective. Stat Meth Med Res 1998;7:209–34.
- Roland M, Torgerson DJ. What are pragmatic trials? Br Med J 1998;316:285.
- Begg C, Cho M, Eastwood S, Horton R, Moher D, Olkin I, et al. Improving the quality of reporting of randomized controlled trials. The CONSORT statement. JAMA 1996;276:637–9.
- Vaglum P. Norge satser pa psykiatrisk forskning. Nord Med 1993;108:151–5.
- Stephenson J, Imrie J. Why do we need randomised controlled trials to assess behavioural interventions? Br Med J 1998;316:611–3.