Abstract
Background: There has been concern about under-representation of older people in clinical trials. The PREDICT study reported that older people and those with co-morbidity continue to be excluded unjustifiably from clinical trials. However, there is no information about differences of opinion on these issues between EU countries. The results of a survey of health-related professionals from nine EU countries that participated in the PREDICT study are presented in this study.
Objective: The aim of the study was to identify and examine any differences of opinion between EU countries on the inclusion of older patients in clinical trials.
Methods: A questionnaire using a Likert scale and free text was completed by 521 general practitioners, geriatricians, clinical researchers, ethicists, nurses and industry pharmacologists/pharmacists. The questions explored the impact of the present situation, possible reasons for under-representation and potential methods of improving participation. Countries participating were the Czech Republic, Israel, Italy, Lithuania, the Netherlands, Poland, Romania, Spain and the UK.
Results: There was agreement that exclusion from clinical trials on age grounds alone was unjustified (87%) and that under-representation of older people in trials caused difficulties for prescribers (79%) and patients (73%). There were national differences between professionals. All but the Lithuanians believed that older people were disadvantaged because of under-representation. The Czech, Lithuanian and Romanian professionals felt that it was justified to have age limits based on co-morbidity (61–83%) and polypharmacy (63–85%). Romanians also thought that having age limits on trial participation was justified because of reduced life expectancy (62%) and physical disability (58%) in older people. All but the Romanian professionals felt that the present arrangements for clinical trials were satisfactory (62%). All but the Israelis (56%) and Lithuanians (70%) agreed that regulation of clinical trials needed alteration.
Conclusions: Although respondent selection bias cannot be excluded, the differences that emerged between countries may be the result of the political and healthcare-system differences between older and newer members of the EU. These differences may influence decision making about clinical trial regulations and practice in older people.
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.References
Clarfield AM, Friedman R. Survey of the age structure of “age-relevant” articles in four general medical journals. J Am Geriatr Soc 1985 Nov; 33(11): 773–8
Cherubini A, Del Signore S, Ouslander J, et al. Fighting against age discrimination in clinical trials. J Am Geriatr Soc 2010 Sep; 58(9): 1791–6
Bugeja G, Kumar A, Banerjee AK. Exclusion of elderly people from clinical research: a descriptive study of published reports. BMJ 1997 Oct 25; 315(7115): 1059
McMurdo MET, Witham MD, Gillespie ND. Including older people in clinical research. BMJ 2005 Nov 5; 331(7524): 1036–7
Bayer A, Tadd W. Unjustified exclusion of elderly people from studies submitted to research ethics committee for approval: descriptive study. BMJ 2000 Oct 21; 321(7267): 992–3
Cruz-Jentoft AJ, Gutiérrez B. Upper age limits in studies submitted to a research ethics committee. Aging Clin Exp Res 2010 Apr; 22(2): 175–8
Beswick A, Dieppe P, Burke M, et al. Improving representation of older people in clinical trials: a PREDICT systematic review [abstract]. Eur J Public Health 2009 Nov 28; 19(Supp. 1): 201
Cherubini A, Oristrell J, Pla X, et al. The persistent exclusion of older subjects from ongoing clinical trials in heart failure. Arch Intern Med 2011 Mar 28; 171(6): 550–6
PREDICT [online]. Available from URL: http://www.predicteu.org/index.html [Accessed 2011 May 31]
Fudge N, Wolfe CDA, McKevitt C. Involving older people in health research. Age Ageing 2007 Sep 1; 36(5): 492–500
Habicht DW, Witham MD, McMurdo ME. The under-representation of older people in clinical trials: barriers and potential solutions. J Nutr Health Aging 2008 Mar; 12(3): 194–6
Witham MD, McMurdo MET. How to get older people included in clinical studies. Drugs Aging 2007; 24(3): 187–96
Le Quintrec JL, Bussy C, Golmard JL, et al. Randomized controlled drug trials on very elderly subjects: descriptive and methodological analysis of trials published between 1990 and 2002 and comparison with trials on adults. J Gerontol Series A Biol Sci Med Sci 2005; 60(3): 340–4
Lee PY, Alexander KP, Hammill BG, et al. Representation of elderly persons and women in published randomized trials of acute coronary syndromes. JAMA 2001 Aug 8; 286(6): 708–13
Masoudi FA, Havranek EP, Wolfe P, et al. Most hospitalized older persons do not meet the enrollment criteria for clinical trials in heart failure. Am Heart J 2003 Aug; 146(2): 250–7
Townsley CA, Selby R, Siu LL. Systematic review of barriers to the recruitment of older patients with cancer onto clinical trials. J Clin Oncol 2005 May 1; 23(13): 3112–24
Bartlam B, Lally F, Crome P, et al., The PREDICT Study. Patients and carers views of older people’s participation in clinical trials [abstract]. Age Ageing 2011; 40(Suppl. 1): i73
Bartlam B, Lally F, Crome P, et al., The PREDICT Study. Patients and carers views of older people’s participation in clinical trials [abstract]. European Geriatric Medicine 2010; 1(S1): S1
EUGMS Policy Working Group. European Commission pharmaceutical package [online]. Available from URL: http://wwweugmsorg/indexphp?pid=1622009 [Accessed 2010 Jul 23]
International Conference on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use. Final concept paper E7(R1). Studies in support of special populations: geriatrics [online]. Available from URL: http://wwwichorg/LOB/media/MEDIA4930pdf2010 [Accessed 2010 Aug 23]
European Forum on Good Clinical Practice. Ethical challenges in clinical research at both ends of life [online]. Available from URL: http://wwwefgcpeu/Downloads/confDocuments/Final%20Report%20-%20EFGCP-EUCROF%20Workshop%20Apr2010pdf 2010 [Accessed 2010 Aug 23]
Acknowledgements
This study was supported by EU grant number HEALTH-F4-2008-201917. The sponsor’s roles were to ensure targets were met and funding was correctly allocated. The authors have no conflicts of interest that are directly relevant to the content of this study.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Crome, P., Lally, F., Cherubini, A. et al. Exclusion of Older People from Clinical Trials. Drugs Aging 28, 667–677 (2011). https://doi.org/10.2165/11591990-000000000-00000
Published:
Issue Date:
DOI: https://doi.org/10.2165/11591990-000000000-00000