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Differences in trial knowledge and motives for participation among cancer patients in phase 3 clinical trials
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Lifestyle and rehabilitation in long term illness. Univ Bergen, Dept Global Publ Hlth & Primary Care, Bergen, Norway.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Centre for Research Ethics and Bioethics.
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2016 (English)In: European Journal of Cancer Care, ISSN 0961-5423, E-ISSN 1365-2354, Vol. 25, no 3, 516-523 p.Article in journal (Refereed) Published
Abstract [en]

While participants in clinical oncology trials are essential for the advancement of cancer therapies, factors decisive for patient participation have been described but need further investigation, particularly in the case of phase 3 studies. The aim of this study was to investigate differences in trial knowledge and motives for participation in phase 3 clinical cancer trials in relation to gender, age, education levels and former trial experience. The results of a questionnaire returned from 88 of 96 patients (92%) were analysed using the Mann-Whitney U-test. There were small, barely relevant differences in trial knowledge among patients when stratified by gender, age or education. Participants with former trial experience were less aware about the right to withdraw. Male participants and those aged ≥65 years were significantly more motivated by a feeling of duty, or by the opinions of close ones. Men seem more motivated than women by external factors. With the awareness that elderly and single male participants might be a vulnerable group and participants with former trial experience are less likely to be sufficiently informed, the information consent process should focus more on these patients. We conclude that the informed consent process seems to work well, with good results within most subgroups.

Place, publisher, year, edition, pages
2016. Vol. 25, no 3, 516-523 p.
Keyword [en]
adults, cancer, clinical trials, patient education, patient information, phase 3 trials
National Category
Cancer and Oncology
Identifiers
URN: urn:nbn:se:uu:diva-252539DOI: 10.1111/ecc.12319ISI: 000375066900018PubMedID: 25904313OAI: oai:DiVA.org:uu-252539DiVA: diva2:810728
Funder
Swedish Cancer Society
Available from: 2015-05-08 Created: 2015-05-08 Last updated: 2017-12-04Bibliographically approved
In thesis
1. Patients in Clinical Cancer Trials: Understanding, Motivation and Hope
Open this publication in new window or tab >>Patients in Clinical Cancer Trials: Understanding, Motivation and Hope
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The overall aim of this thesis was to study participants' understanding of clinical cancer trials, and their motivation for participation. Of particular interest was the question of whether the patients hoped for a cure resulting from the trial. The thesis was based on four studies and used three methods: interviews, a questionnaire, and empirical bioethics. The results of Study I indicated that the participants in phase 1 trials understood most of the information provided, but were unaware of both the very small potential for treatment benefit, and the risk of harm. Patients in phase 3 trials had a good understanding of the trial, except regarding side effects and their right to withdraw. Some found it hard to ask questions and felt they needed more information (Study III). The participants in phase 1 trials were strongly motivated by the generally unrealistic hope for therapeutic benefit (Study I). When the chances of a cure are minuscule, as for participants with end-stage cancer in phase 1 trials, hope can play an important, positive role and offer meaning to one’s remaining life. However, hope for an unrealistic outcome could also deprive patients of an opportunity to spend their remaining lives, as they would otherwise choose (Study II). The participants in phase 3 trials indicated that their motivation for participation was multifaceted; the most common motivations included hope of therapeutic benefit, altruism, access to extra clinical examinations or better care, and a wish to repay society for the help they had received (Study III). After stratifying and analysing the motivation data by gender, age, education and previous experience of trial participation, males and those aged ≥65 years were significantly more motivated to participate out of a desire to reciprocate the help they had received, either because of a sense of duty or because their families or friends considered that they should attend (Study IV). In conclusion, the informed consent process seems to work relatively well, with good results within most subgroups. However, patients with end-stage cancer who are participating in phase 1 trials are a vulnerable group as they have very little potential for treatment benefit coupled with a tangible risk of harm.

 

Place, publisher, year, edition, pages
Uppala: Uppsala universitet, 2015. 79 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 1112
Keyword
cancer, adults, clinical trials, phase 1 trials, phase 3 trials, patient information, patient education, informed consent, hope
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-252542 (URN)978-91-554-9268-7 (ISBN)
Public defence
2015-08-28, BMC, A1:107a, BMC, Husargatan 3, Uppsala, 09:15 (Swedish)
Opponent
Supervisors
Funder
Swedish Cancer Society
Available from: 2015-06-05 Created: 2015-05-08 Last updated: 2015-07-07Bibliographically approved

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Godskesen, ToveKihlbom, UlrikNordin, KarinSilen, MaritNygren, Peter

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