Reflections on the process of participatory research: non-disabled researchers working with sensory impaired people Introduction Over the last decade, it has been cogently argued in the disability literature that if researchers use an orthodox methodology and assume control of the research agenda and process there is a risk that disabled voices are marginalised (Shakespeare 1996; Moore, Beazley and Maelzer 1998; Zarb 1992). This risk is most likely in situations where non-disabled commissioners of research and non-disabled researchers collaborate on research projects that have as their central purpose disability issues. Not only does this put disabled research participants at risk of exploitation for the advancement of knowledge from which they may have no tangible benefit (Kitchin 2002), it might also compromise the validity of the research. Recognition of these arguments has led to the emergence of research methodologies that have emphasised participation in, and control of, the research process over the last two decades (Cornwall and Jewkes 1995). Referred to as participatory research – or participatory action research – this approach has been strongly advocated in the disability literature as a means of addressing some of the limitations of conventional research. To date, few studies have documented how sensory impaired1 people have been involved in health-related research. This paper goes some way towards filling this gap by reflecting on the structures that supported, and the processes that drove a research project that involved non-disabled researchers working with people with a sensory impairment in order to explore their views and experiences of participation in the first stage of the National Bowel Cancer Screening Programme. First, in order to set the research in context, the rationale for the research is briefly outlined by 1 There is wide debate concerning the terminology used to describe sensory impairments; the term ‘impairment’ is seen to represent a challenge to ableist discourse by many people as it reflects a continuum of impairment amongst all people and prevents use of unhelpful dichotomies such as ‘blind’ and ‘sighted’ (Bolt 2005). Whilst it is acknowledged that some deaf people do not perceive deafness to be an impairment, for the purposes of clarity and brevity, the term ‘sensory impairment’ will be used in some instances to refer collectively to people who identify as deafened or hard of hearing; those who identify as being part of the Deaf/deaf community and those who identify as being blind or partially sighted. The term ‘deaf’ will be used to include those people with any level of hearing impairment. 1 considering the health policy context, particularly as it relates to bowel cancer screening. This is followed by a discussion of participatory research as a research strategy that has the potential to keep the voices of people with a sensory impairment to the fore. The paper then explores the approach used in the research project and considers the extent to which this facilitated the research and enhanced the validity of the findings. Finally, the paper considers how the findings could be used to inform the bowel cancer screening process. The origins of the research: the policy context Bowel cancer is the third most common cancer in the United Kingdom and the second leading cause of cancer deaths, killing some 16,000 people each year (Cancer Research UK 2007). However, regular bowel cancer screening can reduce the risk of dying from bowel cancer by 16% (Hewitson, Glasziou, Irwig, Towler and Watson 2007). On the basis of this finding, in 2006, the National Bowel Cancer Screening Programme was introduced in England, inviting, by postal letter, all adults between the ages of 60 to 692 and who are registered with a GP, to participate in screening. The initial stage of the screening process involves the self-completion of a faecal occult blood test, which requires the collection of small stool samples that are subsequently posted to a local screening programme hub laboratory for testing. A pack is sent out containing the test kit, an instruction leaflet, an invitation letter, and a booklet on bowel cancer screening. Taking the stool samples involves a fairly high degree of commitment and dexterity. For example, it requires the use of sticks to collect samples from a stool that has not been in contact with toilet water, which are spread onto the test kit in the appropriate places. Two samples from three different bowel motions must be taken within a two week period and a fresh stick has to be used each time. The success of the screening programme in the early detection of bowel cancer is, in part, dependent on the uptake of the initial invitation to participate and the subsequent completion of the screening test. Thus, considering how accessible the programme is to those in the target group is important. Research to date indicates that participation in bowel cancer screening may only reach 60% (The UK CRC Screening Pilot Evaluation Team 2003) and a variety of reasons have been identified 2 In December 2007, the Government announced that screening would be extended to people aged 70-75 in 2010). 2 for this: for example, the perceived unpleasantness of the test, (Worthley et al. 2006) people’s perceptions of their own vulnerability to bowel cancer (Hunter et al. 1991) and whether or not their GP had recommended their participation (Rabeneck 2007). However, in some groups – for example, those with a sensory impairment – participation might be lower because, in addition to these factors, they find the process particularly challenging because it has not been developed with their needs in mind. This means that they are at risk of being excluded from processes from which their health might benefit. If this is the case, there is the possibility that inequalities in access to a health care process such as screening might worsen inequalities in health. This would be counter to the current emphasis in government health policy on reducing health inequalities (Department of Health 2004). This analysis of the screening context illustrates the rationale for the project. The National Screening Programme wanted to commission research that explored sensory impaired people’s views and experiences of the first stage of the bowel cancer screening process in order to understand how inequalities in access to screening might be operating amongst this group. It was likely that sensory impaired people would constitute a sizable minority of the 60 – 69 year old target group. Thus, it was not a research agenda that was directly initiated by people with a sensory impairment. However, recent research has revealed that access to healthcare, and preventative healthcare in particular, can be difficult for people with a disability (Disability Rights Commission 2007; Kroll et al. 2006; Ramirez et al. 2005). In particular, people with a sensory impairment have been found to face a number of barriers when interacting with health services, often because service providers had failed to make adjustments for their needs (Disability Rights Commission 2007; UK Council on Deafness 2006; RNID 2004; Sense and Deafblind UK 2001). This suggests that there was the potential for the research to lead to benefits for the wider sensory impaired community. Participatory research: process and outcomes The primary purpose of the research was to engage sensory impaired people within the target age range for bowel cancer screening in order to explore their views and experiences of participation in the initial part of the screening process. Notwithstanding what has been said above in relation to the origins of the research, the value of using a participatory approach in the design, management and execution of the project was appreciated by the researchers and commissioners of the research. This was for several reasons: first, its commitment to utilising the 3 knowledge, expertise and resources of sensory impaired people to inform the research process (Macaulay et al. 1999) was seen as likely to increase the validity of the research (Chappell 2000; Thornton et al. 2003; Truman and Raine 2001). This was particularly the case given that a qualitative approach to the research was used to enable sensory impaired people to draw on their experiential and biographical knowledge (Truman and Raine 2001) to give their accounts of what it was or would be like to be involved in the bowel cancer screening process. Thus, involving sensory impaired people had the potential to ensure that research questions reflected the interests of this group (Beresford 2007) whilst giving credence to their views (Chappell 2000) and sensitising researchers to their concerns (Macaulay et al. 1999). This was also seen as having a range of benefits in relation to improving the feasibility of the research. For example, their involvement was seen as a vehicle for informing the design of recruitment strategies and data collection methods that were genuinely inclusive and which sought to enhance the participation and involvement of sensory impaired people as research participants. Involving sensory impaired people in the research was thus seen as benefiting the research in a number of ways and perhaps reflects why public and patient (or service user) involvement in National Health Service (NHS) research is now a policy imperative (Boote, Barber and Cooper 2006). However, given the central commitment of participatory research to bringing about change in the lives of those who are the focus of the research (Gilbert 2004; White, Suchowierska and Campbell 2004) it is important to consider what might be the benefits to sensory impaired people. Participatory research is a vehicle for better representing the social world of sensory impaired people, thus improving the validity and credibility of the findings. This increases the likelihood of external commissioners and funders of research accepting the findings as part of a valid evidence base making and using them to inform future service developments. If this was to happen then there is a genuine opportunity for participatory research to ‘bridge the gap between research and practice’ (Beamish and Bryer 1999, 458) and bring about disability oriented change. The key issue, however, about participatory research is the challenge it poses to researchers given that it has a commitment to reversing the traditional power balances between ‘professionals’ and ‘lay’ people (Cornwell and Jewkes 1995). Zarb (1992) for example argues that researchers should be directly accountable to disabled people, whilst others have emphasised the importance of researchers’ expertise being put at the disposal of people with disabilities (Oliver 1992; Gilbert 4 2004). The following sections describe and explain the structures and processes that underpinned the project and generated the social relations between researchers, sensory impaired people and the commissioners of the research, and explore how these issues of power and control were managed. Project structure: setting up the steering group The research commissioners, who were responsible for ensuring that the project was conducted and completed in line with their stated aims and resources, initially took control of setting up the steering group. However, they showed a commitment to involving representatives of the sensory impaired community from the beginning. Thus, using their contacts with two local disability organisations they invited two individuals to join the steering group. This meant that the project steering group consisted of: three researchers; two representatives from the Cheshire and Merseyside Bowel Cancer Screening Programme; two representatives from the health inequalities team at the local cancer network; a support worker from a voluntary organisation for people with a visual impairment who was himself visually impaired; and a deaf support worker from an organisation providing support to deaf people. Whilst representation was imbalanced, the steering group provided a vehicle for blending the knowledge and skills of researchers and commissioners with the first-hand experience of sensory impaired people (Kitchin 2002). Securing representation on the steering group from people with a sensory impairment was not straightforward and the experience illustrated how non-disabled researchers and commissioners can find it difficult to find a way into communities with which they are not normally engaged. In the case of representation from the visually impaired community it was possible to use an established contact. Thus, this support organisation was approached for help, and a good working relationship endured for the duration of the research project. However, it was more difficult to secure representation from the deaf community. Communication with deaf staff at the organisation was conducted via British Sign Language (BSL) interpreters, which took considerable time, partly because of the researchers’ inexperience of communicating with BSL users. Consequently the representative from the deaf community did not join the steering group until after the project had begun, when several decisions about the research had already been made. This came as an early lesson to the researchers in communication with the deaf community, where it was not usually possible to rely on direct contact via telephone and e-mail. It also illustrates how 5 researchers can quickly become sensitised to the need to change their everyday practices when seeking to work with sensory impaired people. Although the steering group included two individuals with a sensory impairment, representation of the diversity amongst this group was limited. For example, the views of deafblind people, and people who were hard of hearing, may not have been represented so well. In addition, although the individuals recruited onto the steering group were able to represent, to some extent, the views of other people who accessed their support services, the extent to which they were able to represent those not in contact with services, is questionable. However, the limitations of time and resources meant that the project moved forward without further attempts to increase the membership of the steering group. There may be a tendency for non-disabled researchers to substitute consultation with sensory impaired people with advice from other non-disabled people who appear to represent their views, as this is likely to be more convenient to them, a more efficient use of their time and less problematic. There may also be a temptation for researchers to rely on the advice of academic peers, who may or may not have a sensory impairment, firstly because this advice may be readily available via well established networks, but also because of the authoritative weight ascribed to experiences within academia. This process of substitution can marginalise the voices of disabled people (Moore, Beazley and Maelzer 1998) and the involvement of sensory impaired steering group members acted as a counter to these tendencies. This was partly because they ensured that the views of people with a sensory impairment were kept high on the research agenda when planning the project and deciding how best to consult with this group, these views being informed by their lived experience of disability. However, it was certainly the case that the researchers drew on a wide range of advice beyond the steering group that included people from the sensory impaired community working in voluntary organisations, the wider disability community and academic and support staff from the university where they were based. The regular meetings of the steering group – to whom the researchers were accountable – provided a mechanism for ensuring that the researchers remained sensitised to those issues of relevance and importance to sensory impaired people, thus limiting the scope for their marginalisation. This forum also created an opportunity for researchers and steering group members to be active in the research process and learn from one another (Macaulay et al. 1999). These dialogues were important because it enabled all parties to put forward their views and agree 6 strategies for the project. Some of the strategies that are particularly noteworthy because they influenced the direction of the project in terms of its feasibility are discussed further below. Recruitment of research participants Given the importance of communication at the recruitment and data collection stages of the fieldwork particular consideration was given to this process. In order to recruit people with a sensory impairment between the ages of 60 and 69 years, the researchers were dependent on a number of gatekeepers and a variety of voluntary organisations supporting people with a sensory impairment were approached for help with recruitment. These support organisations were familiar with the preferred communication methods of their service users and offered advice on how best to proceed with the recruitment process. However, several issues confronted the researchers. First, whether individuals with a sensory impairment accessing support organisations received information about the research at all was dependent on the gatekeepers’ interest in the research, whether they perceived that their organisation could accommodate the research and whether they thought that their service users would want, and be able, to participate. For example, some smaller organisations perceived that they did not have the facilities to accommodate a focus group and that their service-users would be unwilling to travel to another venue. Hence, the views of these individuals could not be accessed. Linked to this was the fact that when gatekeepers agreed to disseminate information about the research to their service users, the researchers had little control over exactly whom organisations chose to recruit to the study. The researchers endeavoured to communicate the view that everybody accessing a support organisation was a potential research participant and that funding and time were available to ensure that interpreters or facilities could be made available to facilitate any individual’s participation, no matter what their communication needs. However, evidence suggests that staff supporting people with a sensory impairment and acting as gatekeepers in this kind of situation may choose to select people for research based on their communication abilities (Moore, Beazley and Maelzer 1998). In the course of this project researchers were able to secure interviews with a number of deafblind individuals, which suggests that some gatekeepers did not necessarily let perceived difficulties with communication influence their selection of participants. Nevertheless, as recruitment was ultimately left in the hands of the gatekeepers, the researchers could not be sure that other 7 individuals with additional disabilities had not been omitted from the recruitment process. This is an illustration not only of how processes of communication – which in any research situation can be less than perfect – can influence key research processes but also of how the recruitment process, which is normally in the hands of researchers, had to be, at least to some degree relinquished. In terms of the consequences of this for recruitment, this seemed, on reflection, to work well in that 96 research participants were involved in the research. It also generated a fairly diverse sample in relation to age, sex, type and degree of impairment and geographical spread. The sample also included some people who had not been invited for screening, some people who had, as well as some who had participated in the first stage of the screening process. However, the limitation of this way of recruiting individuals meant that those who had no contact with formal support organisations were excluded from the research. Constraints of time and resources meant that the researchers did not fully explore options for recruiting these people. It is possible that these potentially more isolated individuals may experience different barriers to participation in the bowel cancer screening programme than those in contact with organisations. Using a snowball sampling technique, utilising personal links from within the sensory impaired community who were contacted via organisations, may have helped to make the research more inclusive. Indeed, on one occasion an individual attending a support group asked the researchers if she could bring two friends who did not attend the group to a research focus group that she planned to attend the following week. However, this was the exception rather than the rule and illustrates one of the limitations of utilising participatory research that is at the level of ‘user involvement’, rather than a more openly inclusive approach (Beresford 2007). Communicating the purpose of the research There were problems of miscommunication with potential research participants, which, as indicated above, attend all research projects, but posed particular issues for non-disabled researchers who are most familiar with communicating in the written and spoken word. The research team provided information about the research in a number of different formats, as advised by the sensory impaired steering group members and in response to requests from the support organisations (e,g. information sheets in Braille, large print, audio cassette, electronic format). However, 8 in a number of cases the researchers were dependent on support organisation staff translating information about the research to potential participants either verbally or visually in BSL, as they sought to recruit people. There were occasions when this lead to a lack of clarity or misunderstanding for potential participants about what involvement in the project entailed. For example, on one occasion, where apparent consent for participation had been gained via a support organisation, it became clear to researchers at the interview stage that participants had not understood the aims and purpose of the research or their possible participation in it. On another occasion, researchers realised that a group with whom they were expecting to conduct a focus group were themselves anticipating a presentation about bowel cancer and the screening programme. These examples highlight the issue of ensuring that informed consent to participate was gained from all research participants. Inevitably, the traditional practice of obtaining written consent was not appropriate when working with participants for whom written materials were inaccessible. Thus, more informal methods were used in the first instance, such as verbal consent given via the support organisation, and this was followed up by researchers when they met with participants and were able to clarify the aims and purpose of the research. However, potential participants may have felt some pressure to participate at this stage of the recruitment process. Researchers realised that they needed to check individuals’ understandings of the research project sensitively. Data collection methods It is well documented that traditional research practices often leave researchers illequipped to accommodate the needs of participants with impairments (Moore, Beazley and Maelzer 1998) and this is likely to be particularly the case for people with a sensory impairment. However, consultation with people with a sensory impairment on the steering group prompted the development of a range of options through which people with a sensory impairment could participate in the data collection process. Participants were invited to take part in an individual or group interview, a focus group, or an online discussion board. While the researchers had anticipated that the nature of participants’ impairments would determine their preferred method for participation, the nature of their relationship with other people in the support organisation also played an important part. For example, where individuals attended a regular social group via a support organisation, they were 9 often keen to attend a focus group with these people. No participants chose to use the online discussion board. This flexibility was designed to make the data collection process as inclusive as possible by responding to individual needs and preferences. Needs expressed were related to both direct participation in the research and to more practical aspects of attending a particular venue. For example, some participants who were hard of hearing requested a lip speaker to be present at their interview, whilst several participants with a visual impairment required transport to the interview venue. Consulting with staff from support organisations and, in some cases, visiting the venues, enabled the researchers to make sure that the environment for interviews was accessible to the participants and conducive to effective communication. For example, consideration was given to the lighting and seating arrangements for focus groups where participants would be reliant on lip reading. This process also facilitated rapport between the researchers and participants which improved the quality of the data collected. However, not all eventualities in the field were covered by this process and the researchers, perhaps inevitably, made many mistakes which hindered communication. For example, during focus groups run via a BSL interpreter, researchers had not considered the fact that participants would be unable to review visual props, such as a sample faecal occult blood test kit, while the researcher continued to talk, as participants could not simultaneously look at the props and the interpreter. In addition it became clear that developing effective communication strategies presented more of a challenge for the researchers than the participants, who were well-equipped to manage communication in a group or one-to-one setting. For example, consultation had prompted the researchers to give consideration to the fact that visual prompts would be redundant during focus groups with visually impaired participants. The researchers anticipated that the flow of discussion would therefore require careful management. However, it became apparent during fieldwork that participants would manage the flow of conversation themselves using audio clues, requiring little intervention from the researcher. Bringing about change through the dissemination of findings Proponents of participatory methods might criticise the seemingly self-serving motivation for the employment of participatory methods in this project (Dockery 1996) in that it is a process for engaging with research participants in a manner which can 10 increase the credibility and validity of the findings. However, because the research seeks to engage participants meaningfully in the creation of evidence that is grounded in people’s own accounts of disability (Truman and Raine 2001) it has the potential to inform future developments in a direction that might lead to positive change for disabled people. Many of the findings of the research described in this paper revealed that the first stage of the bowel cancer screening process was governed by a set of processes and procedures that made the participation of people with a sensory impairment difficult. Thus, participating in the process by completing the faecal occult blood test was not always simple, straightforward or acceptable and thus uptake of screening was threatened. Many of the comments made by participants related to practical changes to make their participation easier as well as strategies that could be used to motivate people with a sensory impairment to overcome the effort participation could require. These findings were presented in the final report that was sent to the National Bowel Cancer Screening Programme along with a series of recommendations as an evidence base to inform how the programme could be better able to meet the needs of sensory impaired people, and indeed all older people in the target age range who might have hearing, visual or mobility difficulties. To date the recommendations have been used to provide the National Programme with a feedback on how their processes and systems are viewed and being experienced by people with a sensory impairment. The recommendations have highlighted the need for new strategies to be developed, particularly in relation to the forms of communication and how bowel cancer screening staff interact with sensory impaired people at each stage of the pathway. Conclusion This research presented a number of challenges to the researchers involved and in an effort to meet these, a participatory approach was adopted that drew on the experiential knowledge and understandings of sensory impaired people. Regular and frequent consultation with steering group members with a sensory impairment, workers at organisations supporting members of the sensory impaired community and with the individuals ultimately engaged to participate in the research resulted in a process that sought to be genuinely inclusive because it embraced processes of communication that were designed with the needs of sensory impaired people in mind. 11 Developing these inclusive methods was logistically more complex and more resource intensive than a similar study with non-disabled people may have been, and the time and cost demands of the data collection methods were underestimated by the research team. Adopting a participatory approach did however provide an effective way of anticipating some of the complexities of engaging with this group. It is important also to note the applicability of the inclusive practices developed to other ‘hard to reach’ groups, such as those with low-literacy levels. In conclusion, the participatory approach adopted for this project not only ensured that the voices of the people who were the participants, people with a sensory impairment, were kept to the fore, but that the findings were valid and had the potential to enhance the engagement of this group of people with the National Bowel Cancer Screening Programme. Ultimately the success of this project lay, to a large degree, in the nature of the social relations that were generated between non-disabled and disabled people. If participatory research approaches are viewed in these processual terms then a commitment towards realigning the power relationship between the researcher and the researched (Zarb 1992) is important. This is a challenge to all parties engaged in participatory research, but if embraced then has the potential to generate research that can lead to positive change. 12 References Beamish, W. and F. Bryer. 1999. Programme quality in Australian early special education: An example of participatory research. Child: Care, Health and Development 25: 457-472. Beresford, P. 2007. User involvement, research and health inequalities: Developing new directions. Health and Social Care in the Community 15: 306-312. Bolt, D. 2005. From blindness to visual impairment: Terminological typology and the social model of disability. Disability & Society 20: 539–552. Boote, J., R. Barber, and C. Cooper. 2006. Principles and indicators of successful consumer involvement in NHS research: Results of a Delphi study and subgroup analysis. Health Policy 75: 280-297. Cancer Research UK. 2007. Bowel cancer at a glance. http://info.cancerresearchuk.org/cancerandresearch/cancers/ bowel/#screening Chappell, A. 2000. Emergence of participatory methodology in learning difficulty research: Understanding the context. British Journal of Learning Disabilities 28: 38-43. Cornwell, A. and R. Jewkes. 1995. What is participatory research? Social Sciences and Medicine 41: 1667- 676. Department of Health. 2004. Choosing health: Making healthier choices easier. London: Department of Health. Disability Rights Commission. 2007. Part 1 Formal investigation report –equal treatment: Closing the gap. www.drc-gb.org/healthinvestigation Dockery, Grindl. 1996. Rhetoric or reality? Participatory research in the National Health Service, UK. In Participatory research in health: Issues and experiences, 164 -176. London: Zed Books. Gilbert, T. 2004. Involving people with learning disabilities in research: Issues and possibilities. Health and Social Care in the Community 12: 298-308. Hewitson, P., P. Glasziou, L. Irwig, B. Towler, and E. Watson. Screening for colorectal cancer using the faecal occult blood test, Hemoccult, (Review), Cochrane Library (2007) Issue 1. Hunter, W., A. Farmer, D. Mant, J. Verne, J. Northover and R. Fitzpatrick. 1991. The effect of self-administered faecal occult blood tests on compliance with screening for colorectal cancer: Results of a survey of those invited. Family Practice 8: 367-372. Kitchin, R. 2002. The researched opinions on research: Disabled people and disability research. Disability and Society 15: 25–47. Kroll, T., G. C. Jones, M. Kehn, and M. T. Neri. 2006. Barriers and strategies 13 affecting the utilisation of primary preventative services for people with physical disabilities: A qualitative enquiry. Health and Social Care in the Community 14: 284–293. Macaulay, A. C., L. E. Commanda, W. L. Freeman, N. Gibson, M. L. McCabe, C. M. Robbins, and P. L. Twohig. 1999. Participatory research maximises community and lay involvement. British Medical Journal 319: 774-778. Moore, M., S. Beazley, and J. Maelzer. 1998. Researching disability issues. Buckingham: Open University Press. Oliver, M. 1992. Changing the social relations of research production? Disability, Handicap and Society 7: 101-114. Rabeneck, L. 2007. What can we do about low colorectal cancer screening rates? American Journal of Gastroenterology 102: 1736–1738. Ramirez, A., G. Farmer, D. Grant, and T. Papachristou. 2005. Disability and preventive cancer screening: Results from the 2001 California Health Interview Survey. American Journal of Public Health 95: 2057–2065. Royal National Institute for Deaf People (RNID). 2004. A simple cure: A national report into deaf and hard of hearing people’s experiences of the NHS. London: UK Council on Deafness. Sense and Deafblind UK. 2001. Who cares? Access to healthcare for Deafblind people. London: Sense. Shakespeare, T. 1996. Rules of engagement: Doing disability research. Disability and Society 11: 115-119. Truman, C. and P. Raine. 2001. Involving users in evaluation: The social relations of user participation in health research. Critical Public Health 11: 215-229. The UK CRC Screening Pilot Evaluation Team. 2003. Evaluation of the UK Colorectal Cancer Screening Pilot: Final report. http://www.cancerscreening.nhs.uk/bowel/finalreport.pdf Thornton, H., A. Edwards, and G. Elwyn. 2003. Evolving the multiple roles of ‘patients’ in health care research: Reflections after involvement in a trial of shared decision making. Health Expectations 6: 189-197. UK Council on Deafness. 2006. Access to communication in English for deaf people. Colchester: UK Council on Deafness. White, G., M. Suchowierska and M. Campbell. 2004. Developing and systematically implementing Participatory Action Research. Archives of Physical Medicine and Rehabilitation. 85: 3-12. Worthley, D., S. Cole, A. Esterman, S. Mehaffey, N. Roosa, A. Smith, D. A. Turnbull and G. P. Young. 2006. Screening for colorectal cancer by faecal occult blood test: Why people choose to refuse. Internal Medicine Journal 36: 607–610. Zarb, G. 1992. On the Road to Damascus: First steps towards changing the 14 relations of disability research production. Disability, Handicap & Society 7: 125-138. 15