Clinical considerations for allied professionals on research ethics--Vulnerable research participant populations: ensuring ethical recruitment and enrolment

Using behaviour change theory to inform an innovative digital recruitment strategy in a mental health research setting

Recruitment in mental health research is challenging, as some disorders such as depression or schizophrenia may involve vulnerable participants that lack motivation as part of their illness. A mental health diagnosis can be stigmatising, so privacy and access to hospital-based patient cohorts is carefully controlled. Our team describe a pragmatic portal recruitment process for facilitating timely recruitment into multiple research studies focusing on mental health. Three factors were analysed; evaluating the success and impact of this novel recruitment process; identification of patterns in recruitment to better target participants; and provision of metrics of the different media formats engaged. A web-based recruitment portal was developed by the research team in collaboration with the South Australian Health and Medical Research Institute (SAHMRI) Consumer & Carer Research Advisory Group. A comprehensive marketing campaign was then undertaken to direct participants towards the portal. Recruitment insights from the dates and times of registration across a two-year period is provided. In total, 933 potential participants registered with the recruitment portal across a two-year period at a cost of approximately $10,000. The advertisement campaign linked to the portal page enabled 506 participants to register in just one week. The area of research was self-selected by the potential participants, then eligibility was followed up with telephone and face to face interviews. Of the total 933 people who registered 706 (76%) expressed an interest in the target clinical depression study, 119 (13%) opted to be clinical controls, and the remainder chose one of the alternative studies. 240 (26%) of those who registered were excluded through telephone interviews because they fell outside of the strict eligibility criterion. We learnt that 77% (n = 723/933) of participants were recruited within seven days of promotional events, providing an interesting pattern of recruitment that may assist future recruitment design.

Doing Research with Vulnerable Populations: The Case of Intravenous Drug Users

This review article considers ethical concerns when doing research on potentially vulnerable people who inject drugs (PWID) in a Canadian context. The Tri-Council Policy Statement: Ethical Conduct for Research Involving Humans broadly addresses many of the traditional ethical principles of research on vulnerable persons, but does so at the cost of clarity and precision. Vulnerability is contextual rather than absolute. When doing research with vulnerable persons, informed consent should be obtained from an independent person, and comprehension should be checked using questioning. Participants can be vulnerable due to many factors, including addiction, chronic disease, socioeconomic and racial status, and lack of education. The ability of PWID to give informed consent can be compromised by undue influence or intoxication, but existing research shows that neither the mode nor the magnitude of compensation has a significant effect on new rates of drug use. Compensation can also help dispel the therapeutic misconception. Intoxication rather than undue influence is the main concern when obtaining informed consent from PWID. The stigmatization of PWID as incapable of consent should be avoided. Paternalistic exclusion from research can harm PWID and exacerbate their vulnerability by reducing our knowledge of and ability to specifically treat them. As such, we must collect better data about the effects of research ethics policies. Studies to this effect should focus on experiences, perspectives and needs of potentially vulnerable research participants. Research ethics boards in Canada should adopt an evidence-based approach when applying discretionary power to proposals for clinical research.

Informed consent: are researchers accurately representing risks and benefits?

Changes in the scope of health research in the last 50 years require evidence to support assumptions about what constitutes harm and benefit to research participants. The aim of this study was to investigate the actual benefits and harm individuals experienced while participating in potentially distressing qualitative research. Data were collected via semi-structured interviews and subjected to thematic analysis. Five themes emerged: (i) motivation to participate, (ii) expectations of participation, (iii) sources of harm, (iv) mitigating harm and (v) benefits of participation. Results indicated that all participants benefited through participation in the qualitative research. Most participants also reported varying degrees of distress during the interviews, but did not consider this harmful. In contrast, dissemination of the findings did constitute an unexpected source of potential harm for the participants and researcher. It is concluded that for these participants, distress during qualitative interviewing is not in itself harmful, and that participant information sheets need to reflect the harms and benefits of participation more accurately in a user-friendly format. Furthermore, the sensitivity with which research is disseminated needs to be considered as a fundamental protection for participants from unwarranted criticism by third parties. Recommendations include that researchers conducting interviews have specific personal and professional attributes relevant to the participant group, and that transcripts/raw data should not be sent automatically to participants.