Altman DG, Bland JM. Treatment allocation in controlled trials: why randomize?Br Med J1999; 318: 1209.
2.
Thomas DP. Sailors, scurvey and science. J R Soc Med1997; 90: 50–54.
3.
Fibiger J. Om serumbehandlung af Difteri. Hospitalstidende1989; 6: 309–325.
4.
Powers E, Witmer H. An experiment in the prevention of delinquency. The Cambridge–Somerville youth study. New York: Columbia University Press, 1951.
5.
Yoshioka A. Use of randomization in the Medical Research Council's clinical trial of streptomycin in pulmonary tuberculosis in the 1940s. Br Med J1998; 317: 1220–1223.
6.
Hart PD. A change in scientific approach. From alternation to randomized allocation in clinical trials in the 1940s. Br Med J1999; 319: 572–573.
7.
Gotay CC. Accrual to cancer clinical trials: directions from the research literature. Soc Sci Med1991; 33: 569–577.
8.
Cook T, Campbell D. Quasi-experimentation–design and analysis issues for field settings. Chicago, IL: Rand McNally, 1979.
9.
Crow R, Gage H, Hampson S, Hart J, Kimber A, Thomas H. The role of expectatncies in the placebo effect and their use in the delivery of health care: a systematic review. Health Technol Assess1999; 3 (3).
10.
Torgerson D, Klaber-Moffett J, Russell I. Patient preferences in randomized trials: threat or opportunity?J Health Serv Res Policy1996; 1: 194–197.
11.
Torgerson D, Sibbald B. What is a patient preference trial?Br Med J1998; 316: 360.
12.
Olschewski M, Scheurlen H. Comprehensive cohort study: an alternative to randomized consent design in a breast preservation trial. Methods Inf Med1985; 24: 131–134.
13.
Brewin CR, Bradley C. Patient preferences and randomized clinical trials. Br Med J1989; 299: 313–315.
14.
Ward E, King M, Bower P et al. Effectiveness of non-directive counselling, cognitive behaviour therapy and usual general practitioner care for patients with depression. Report submitted for publication.
15.
Gossop M, Johns A, Green L. Opiate withdrawal: inpatient versus outpatient programmes and preferred versus random assignment to treatment. Br Med J1986; 293: 103–104.
16.
Henshaw RC, Naji SA, Russell IT et al. Comparison of medical abortion with surgical vacuum asperiation. Br Med J1993; 307: 714–717.
17.
McKay J, Alterman A, McLellan T, Snider E, O'Brien C. Effect of random versus non-random assignment in a comparison of inpatient and day hospital rehabilitation for male alcoholics. J Consult Clin Psychol1995; 63: 70–78.
18.
Bower P, King M. Randomized controlled trials and the evaluation of interventions. In: Rowland N ed. Evidence based health care and psychological therapies in the National Health Service. Routledge (in press).
19.
Bower P et al. Patient preferences in clinical trials of psychological therapy–their nature and associations with patient characteristics and outcome. Report submitted for publication.
20.
Zelen M. A new design for randomized clinical trials. N Engl J Med1979; 300: 1242–1245.
21.
Wennberg JE, Barry MJ, Fowler FJ, Mulley A. Outcomes research, PORTS, and health care reform. Ann N Y Acad Sci1993; 703: 52–62.
22.
Jadad A. Randomized controlled trials. London: British Medical Journal Books, 1998: 24–25.
23.
Feine JS, Awad MA, Lund JP. The impact of patient preference on the design and interpretation of clinical trials. Community Dent Oral Epidemiol1998; 26: 70–74.
24.
Korn EL, Baumrind S. Randomized clinical trials with clinician-preferred treatment. Lancet1991; 337: 149–152.