An increasing number of older people reach the end of life in care homes. The aim of this study is to explore the perceived benefits of, and barriers to, implementation of the Gold Standards Framework for Care Homes (GSFCH), a quality improvement programme in palliative care.
Nine care homes involved in the GSFCH took part. We conducted semi-structured interviews with nine care home managers, eight nurses, nine care assistants, eleven residents and seven of their family members. We used the Framework approach to qualitative analysis. The analysis was deductive based on the key tasks of the GSFCH, the 7Cs: communication, coordination, control of symptoms, continuity, continued learning, carer support, and care of the dying. This enabled us to consider benefits of, and barriers to, individual components of the programme, as well as of the programme as a whole.
Perceived benefits of the GSFCH included: improved symptom control and team communication; finding helpful external support and expertise; increasing staff confidence; fostering residents' choice; and boosting the reputation of the home. Perceived barriers included: increased paperwork; lack of knowledge and understanding of end of life care; costs; and gaining the cooperation of GPs. Many of the tools and tasks in the GSFCH focus on improving communication. Participants described effective communication within the homes, and with external providers such as general practitioners and specialists in palliative care. However, many had experienced problems with general practitioners. Although staff described the benefits of supportive care registers, coding predicted stage of illness and advance care planning, which included improved communication, some felt the need for more experience of using these, and there were concerns about discussing death.
Most of the barriers described by participants are relevant to other interventions to improve end of life care in care homes. There is a need to investigate the impact of quality improvement programmes in care homes, such as the GSFCH, on a wider range of outcomes for residents and their families, and to monitor the sustainability of any resulting improvements. It is also important to explore the impact of the different components of these complex interventions.
Populations across the world are ageing. The very oldest people often experience multiple chronic diseases, such as heart failure, respiratory failure and dementia. As a result of physical and mental frailty, in economically developed countries, older people are increasingly cared for in nursing or residential homes at the end of life. The majority of residents in nursing homes die within 2 years . They die with multiple medical pathologies, but not always from them (as evidenced for people with dementia, who in nursing homes account for 70% of the population). Literature reviews have shown a considerable need for palliative care in these settings, including the need for improved symptom management[2-4] and addressing psychosocial and spiritual needs [3,5]. There are, however, barriers to providing palliative care in care homes, for example: staff shortages and turnover; lack of time and knowledge of palliative care among staff; shortage of equipment; lack of support from primary care; and poor communication among staff, and between staff and residents and their families [6-8]. Some of these are likely to be encountered across different countries, however, since the systems of care and support for residents are different (e.g. residents' access to medical and palliative care support), others may be more context specific.
Care homes in England offer nursing care and/or personal care to older people. They are owned and managed by a range of public sector, private sector, and not-for-profit bodies, and are registered with, and regulated by, the Care Quality Commission. The proportion of deaths in care homes increases with age . In England (2006-2008) 10.5% of people aged between 75-79 years died in care homes, whereas 36.9% of those aged over 90 years died in these settings. Delivering good end of life care in care homes depends on a range of structural, political, cultural and resource issues . A study to map the wider health and social system surrounding care homes showed that the quality of the interrelationships with this wider system determines the quality of the end of life care they can provide. For example, leadership was important, and knowledge of and access to outside resources and expertise was variable.
Over the last 15 years there have been a range of developments to improve end of life care in care homes. These include providing education and training for care home staff , quality initiatives , and giving clinical nurse specialists a higher profile [11,13]. One recent approach developed in the UK to improve end of life care in care homes is the Gold Standards Framework (GSF). This is a multidimensional quality improvement programme developed to optimise end of life care in generalist settings as part of the UK End of Life Care Strategy . The programme has spread internationally with pilots in Australia, New Zealand, USA, Canada, Belgium, Holland, and has been adapted to address the needs of residents in care homes for older people (GSFCH). Further details of the GSFCH are in Table 1. The GSFCH uses similar key tasks (the 7C's, shown in Table 2), templates and assessment tools as the GSF, with some modifications to make them more suitable for a care home environment. The programme has developed over six phases http://www.goldstandardsframework.org.uk/GSFCareHomes webcite, and has developed a quality improvement process leading to accreditation. A survey conducted as part of the evaluation of the first large scale implementation (Phase II) showed a reduction in hospital deaths reported by the 46% of homes providing the necessary data [15,16], and improvements on other indicators, such as having an up to date register for end of life care . By June 2009, nearly 1,000 homes had undertaken training across the country, with up to 100 being accredited each year. Evaluations of the implementation of the GSFCH in Scotland [18,19] and in Manchester  have reported positive findings. For example, the introduction of the GSFCH in Scotland resulted in a reduction in hospital deaths and increased 'do not attempt resuscitation' documentation and advance care planning. The evaluation of the implementation of the GSFCH and the Liverpool Care Pathway (LCP) for people with dementia in Manchester describes an emerging picture of overall staff confidence in the planning and implementation of end of life care and satisfaction with education and training and GSF/LCP tools.
However, nearly half of the care homes in the Phase II evaluation may not have completed implementation of the GSFCH, or may have withdrawn from the programme , suggesting that they encountered barriers to implementation. Relatively little is known of these. The aim of this study is to explore the views of care home staff, residents and their families on the benefits of and barriers to implementation of the GSFCH, to inform the development of palliative care interventions in care homes for older people.
Since, relatively little is known of the perceived benefits and barriers to implementing the GSFCH and other palliative care programmes in care homes, we used qualitative methods to explore participants' views in-depth. We chose to use individual interviews rather than focus groups because we felt that focus groups would be impractical. We felt that staff would be more reluctant to voice individual concerns in a group from the same care home, and that it would be very difficult to arrange groups involving several care homes. From our previous experience of interviewing residents, we knew that it was difficult to find a time when they are willing and able to take part in research.
The study was approved by the King's College Hospital Research Ethics Committee (REC Refs: 07/H0808/136 & 07/Q0703/89) and met the requirements of the Local Research Governance Framework. To protect the anonymity of participants we used our identification number for the homes and whether they were in earlier or later phases of the GSFCH, rather than participant names when using quotes.
All care homes for older people in two London boroughs were invited to take part in this study. Both boroughs were rated on at least one summary measure of deprivation as being in the top 50 deprived areas in England. One was rated within the top 10 social deprivation areas. Homes were identified through the website of the regulatory body for care homes in England and the local Care Home Support Team. Care home managers were sent information about the study, then contacted by telephone to ask if they were willing for their home to be included. All nine care homes which were, or had been, involved in the GSFCH took part. Their participation in the GSFCH programme was verified by the GSFCH team. All homes had on-site nursing and were privately funded (not funded by a charity or publicly funded by the National Health Service). Eight homes worked with a single general practice, one home worked with two practices. Further details of the homes are given in Table 3. At the time of the study, one of these homes had withdrawn from the GSFCH Programme (at an early stage), and another had temporarily withdrawn from the GSFCH programme. Support from the local hospice and the Care Home Support Team was available to all the care homes.
Table 3. Characteristics of care homes
In total, 44 people were interviewed - 9 care home managers, 8 nurses employed by the homes, 9 care assistants, 11 residents, and 7 residents' family members.
We interviewed the manager and a care assistant from each home, and a nurse employed in each of the eight homes. We were unable to recruit a nurse in one home (although this home had on-site nursing). Care assistants and nurses were randomly selected from staff lists. In addition 11 residents (two from a Phase II, four from Phase III, and five from Phase IV homes) and seven residents' family members (one from a Phase II, 3 from Phase III and 3 from Phase IV homes) were interviewed. Six family members represented residents who were too ill or cognitively impaired to take part. The number of participants from each home is shown in Table 3.
Semi-structured interviews were conducted by CG or FS, both of whom had experience of conducting qualitative interviews and were trained by SH to use the topic guide for this study. Staff and residents were interviewed in the care home, family members were interviewed either in the care home or in their own homes. To cover the main aspects of the GSFCH, the topic guide was based on the seven key tasks of the GSFCH: the 7Cs (Table 2). In addition to broad questions about the GSFCH in general and the 7Cs, specific questions were asked about some GSFCH tasks. Examples of questions and prompts from the topic guide are given in Additional File 1. These reflected key standards in the GSFCH accreditation checklist . Although the topics covered were similar for the care home staff and residents and their families, topic guides were adapted for each group. They were a flexible framework of questions which allowed the interviewers to adapt the questions to the interest, knowledge and language ability of participants. The average time taken to conduct the interviews was: 57 minutes for care home managers; 53 minutes for nurses; 43 minutes for family members; 40 minutes for residents; and 31 minutes for care assistants. Participants were given a £20 gift voucher to compensate them for their time. Interviews were recorded and transcribed verbatim.
The Framework approach to qualitative analysis  was used. Further information on this approach, our treatment of the interview transcripts, and the development of the thematic framework is given in Additional File 2. The analysis was deductive: all themes were developed a priori, based on the topics covered in the interview (7Cs). This was to enable us to consider benefits and barriers of individual components of the programme, as well as of the programme as a whole. This approach follows the recommendations by the MRC framework for the development and evaluation of complex interventions, in trying to determine the mechanisms of action of different interventions . In qualitative analysis there is considerable diversity in the identification of themes, the interpretation of the concept, and its function in data analysis. This is partly due to the different theoretical approaches to qualitative analysis. We defined "theme" as qualitative data grouped around a central issue - a more limited and concrete category than is often used in qualitative research. All transcripts were indexed (coded) by FS using the final agreed framework. Indexing was checked by SH and CG, and any disagreements were resolved by discussion. Charts containing extracts of interviews were constructed and used to describe the range of participants views in each theme and sub-theme. The findings were linked back to the literature.
Response rates were 9/9 for managers, 9/15 for care assistants, 8/15 for nurses, 11/28 for residents and 7/25 for family members. The denominator is the number of people invited to take part. We did not ask individuals to justify their decision not to take part, however, care home staff often said that they were too busy to take part.
General views on the GSFCH
Staff in all the Earlier Phase (II & III) homes felt there were benefits to the programme. These included: improved symptom control for residents; better team communication; finding helpful external support and expertise; increasing staff confidence; fostering choice for residents (reducing unnecessary hospital admissions and allowing residents to die in the home); and boosting the reputation of the home (Quote (Q)1). Staff in both the homes which had withdrawn from the programme were keen to re-join. Barriers to implementing the programme reported by staff included: the amount of paperwork; lack of understanding of the palliative care terminology used in the GSFCH paperwork (Q2); time and money; and staff believing that palliative care was only for residents with cancer. The manager of one of the Earlier Phase homes felt that progressing through the programme was a slow process and that having previous experience in palliative care was important to success (Q2). Although Later Phase homes had less experience, and therefore less to say about their experiences in the programme, they were optimistic that it would be beneficial.
Communication with general practitioners
For care homes to deliver good end of life care there needs to be effective communication and collaboration. Many of the tools and tasks in the GSFCH focus on improving communication. Developing such relationships with general practitioners (GPs) is a key component of the GSFCH. Although some homes had good collaborative relationships with GPs (Q3), and one of residents was delighted with the communication with their GP (Q4), six managers described problems trying to achieve this (Q5). Residents and their families also sometimes described problems with GPs. For example, a resident of the Later Phase homes felt that their GP showed little interest in the problems she was having with the circulation in her feet and legs and did not spend enough time with her in the consultation (Q6). The daughter of a resident with advanced dementia in the same home was concerned that she had not been given information about her mother's condition (Q7). We do not know if this was the same GP.
Communication with others
Staff described communication and collaboration with a wide range of external collaborators, including: palliative care specialists from local hospices and hospitals; district nurses; the care home support team; physiotherapists; mental health specialists; counsellors; and complimentary therapists. They also describe internal collaborative relationships between their own link nurses and between managers and other care home staff. Barriers to communication and collaboration included: workload; staff shortages; and care assistants not feeling confident to report problems due to concerns about being blamed (Q8). For many care home staff, English was not their first language, therefore poor English was another barrier to communication (Q9).
Supportive care register
A supportive care register is a summary document which can help facilitate communication between everyone involved in a resident's care. For each resident on the register there is, for example, information on prognosis (which is coded); any problems or concerns; anticipated needs; and residents' preferred place of care. It is a central place to keep all facts to hand for team discussion, and acts as a prompt in proactive planning. Staff agreed that having a supportive care register helped to improve communication. It provided: an opportunity to discuss end of life issues with residents; facilitated interdisciplinary teamwork; and helped them monitor residents' progress more efficiently (Q10). However, three participants felt they needed more experience or guidance to complete the relevant forms. Two of these were in Earlier Phase homes (Q11). Other barriers were people not feeling comfortable talking about dying (see Advance Care Planning) and difficulty in involving families (see Q5).
Coding the predicted stage of illness
Having a coding process to identify the estimated predicted stage of illness and likely needs at each stage is another tool with the potential to facilitate communication. The main perceived benefits of this were: increasing staff awareness of residents who are dying; their current and future needs and those of their families (Q12). However, some staff had felt uncomfortable about trying to identify residents nearing the end of life (Q13), or felt that accurate estimation of predicted stage of illness was difficult (Q14). To illustrate this point, several people described cases where residents had "bounced back" and lived much longer than expected (Q15).
Regular interdisciplinary meetings provide an opportunity to discuss residents on the supportive care register and to plan care. No benefits to such meetings were described. Staff described some problems in organising meetings, particularly if they wished GPs to be involved (Q16). The son of a resident who had recently died felt he would like to have attended such meetings and been more involved in discussions about his father's end of life care (Q17).
Advance care planning
Communication with residents and their families can involve difficult advance care planning discussions. Staff perceptions of the benefits of advanced care planning included: increasing family involvement; helping prevent confusion when residents are rushed to hospital (particularly out of hours); and protecting the home from blame for not sending a resident to hospital (Q18). Perceived barriers included: difficulty in deciding when residents have the capacity to make such decisions; disagreements within families; night staff ignoring plans and sending residents to hospital regardless of their preferences; and residents and their families and care home staff being unwilling to discuss death (Q19, Q20). Since care home staff are usually ethnically diverse, it is important to consider cultural differences in willingness to discuss death (Q21). We interviewed two residents and a family member in one of the Earlier Phase homes using GSFCH advance care planning documentation, and none recalled completing such a document. However, both the residents felt uncomfortable about talking about death and neither wanted to complete a plan (Q22). The son of a resident who had died recently in an Earlier Phase home felt that advanced care planning was a good idea, but questioned whether this would make any real difference (Q23). There was some support for his concern from a manager, who describes an incident where a residents wish to not be resuscitated was ignored in the hospital (Q24).
C2: Coordination: the palliative care lead
Having a palliative care lead or coordinator can act as a link in the care home and with various external professionals. In GSFCH this person acts as a link between the GSFCH facilitator and the rest of the care home staff, and organises meetings etc. Benefits of and barriers to having a lead were described by Earlier and Later Phase homes. Benefits included: more effective communication and organisation of end of life care; timely access to advice; disseminating knowledge from GSFCH workshops to staff (Q25); and making sure that staff attend team meetings. The main barrier was lack of time to take on this role (Q26).
C3: Control of symptoms: assessment and management
Assessing and managing symptoms is a key component of end of life care. The GSFCH recommends the use of a range of assessment tools to assess physical and psychological symptoms, including a tool specifically for residents with dementia. Staff felt that using such tools improved communication and planning, and that having a symptom assessment tool developed specifically for end of life would be particularly useful (Q27). The main perceived barriers to using them were difficulties in assessing symptoms for residents with dementia (Q28) and variability in interpretation of the measures (Q29). This manager refers to psychological symptoms, although staff usually talked of pain when they discussed the management of symptoms. Care homes often depended on external expertise for symptom management, usually this was from the GP or the local hospice. The latter they found particularly helpful (Q30).
C4: Continuity: the out-of-hours handover form
Good end of life care requires continuity of care. Residents often need to see a GP out-of-hours, and documents such as an out-of-hours handover form can be a valuable tool to facilitate continuity of care. Such forms are usually completed by a multidisciplinary team and sent to GP practices or the out-of-hours providers, and sometimes others such as the ambulance service. Staff did not raise any major problems with using these forms and felt that they succeeded in preventing residents being sent to hospital inappropriately (Q31).
C5: Continued learning: training and significant event analysis
The GSFCH has a well developed curriculum which includes resources, learning aids and tools with adaptations to meet the needs of local areas. Most staff described some training in end of life care. The extent and type of training varied considerably between homes. The homes in this project are situated in areas of high ethnic diversity, and the nurse in one of the Later Phase homes found training in cultural differences in end of life care particularly helpful (Q32). Culture and language were also seen as barriers to staff education, along with not having the time or resources to attend training. It is also important that plans for staff education include care assistants since they provide much of the day-to-day care of residents (Q33). Reflective learning, for example, using significant event analysis techniques can occur at notable points in the care of residents. These are intended to be non-judgemental group exercises, however, some members of staff might be unwilling to voice their concerns when they feel that a resident's care has not been optimal (see Q8).
C6: Carer support: staff and residents' bereaved family
End of life care does not end when a resident dies; bereavement care for residents' families and friends, care home staff and other residents is important. One Earlier Phase home had a full time counsellor who provided bereavement care for residents' families and friends, care home staff and other residents. This home also provided written information developed for the GSFCH. Other homes described more informal chats with staff, tea and sympathy, and attending funerals rather than specific bereavement plans. One of these had provided bereavement counselling for staff. The main perceived barriers to providing bereavement care were: reluctance to talk about death; and lack of time to provide such support (Q34). The daughter of one of the residents with dementia was also aware of the time constraints on staff and felt that caring for residents should take priority over caring for their families (Q35).
C7: Care of the dying: the Liverpool Care Pathway
An increasing number of care homes are using integrated care pathways such as the Liverpool Care Pathway for the final days of life. We asked staff specifically about the Liverpool Care Pathway. Staff were generally positive about the pathway and felt that it promoted good communication and helped residents' families (Q36). The main perceived barriers to using it were: difficulty in predicting when residents were reaching the last days of life; staff being reluctant to start using new forms of documentation; and becoming de-skilled when deaths in their care home were relatively infrequent (Q37).
Although staff working in these homes perceived a range of barriers to implementation, they were generally positive about the GSFCH and were optimistic that the tools and strategies they were using, or planning to use, would result in better end of life care for residents. They spoke of improved communication, increased staff confidence in end of life care, increased access to valued specialist palliative care support, fostering choice for residents and increased awareness of residents who were dying and their needs. Improved communication, increases in staff confidence and more positive attitudes to end of life care have been noted in evaluations of the GSFCH [16,18,20,24]. Staff in most homes seemed to want to provide the best possible care for their residents and to be seen to do so. Being able to say that they had reached the "gold standard" could also be seen as good for business, thus being accredited could be highly motivating.
Communicating and developing collaborative relationships with GPs was sometimes a problem, which some care homes had not yet managed to solve satisfactorily [16,18,20]. We did not have the resources to include the views of GPs and other relevant National Health Service staff in this study. However, a survey of GPs conducted as part of the evaluation of the GSFCH in Manchester found that the majority of GPs had a positive experience of end of life care in care homes . They felt that the GSFCH increased staff confidence and found the out-of-hours handover form useful. There were concerns over continuity of care and the stability of the workforce, which may impact upon the sustainability of end of life care initiatives and confidence in care home staff. Seeing a sustained improvement in end of life care for residents is likely to increase GPs confidence in the programme. Direct enhanced service payments, thought to have enhanced the development of collaborative relationships between GPs and care homes implementing the GSFCH in Scotland,  might also help.
Some staff also described problems communicating with residents and their families. Although they felt that advanced care planning was important to foster choice for residents, there was some reluctance on the part of staff and residents to broach the subject of death, creating a barrier to both advance care planning discussions and offering bereavement support. Although this is not only a problem for staff from different cultures, cultural differences in attitudes towards death and dying do need to be considered. Lack of confidence in talking to residents and or their families about anticipatory planning in staff from different cultures was reported in the evaluation of the GSFCH in Scotland . Studies conducted in Sweden  and the UK  have reported unwillingness of nursing home staff to talk about death. Reasons for this included: the belief that it was 'not healthy' for residents; personal difficulty in discussing death; and lack of time to have such conversations. Discussing death can also be an issue for some residents . Good communication skills are necessary for staff to conduct such discussions, which cover a range of issues in addition to preferred place of death. There is a need to explore ways of facilitating such discussions, which takes cultural differences into consideration, and increased training is necessary to help staff understand cultural diversity and uncertain prognosis, improve communication skills and advance care planning, and change attitudes towards death and dying. However, education and training are necessary but not sufficient to improve end of life care in care homes. In view of the high staff turnover in many care homes, the way the care home functions needs to change to complement and encourage improved education and learning. It is also important to understand the factors resulting in residents' preferences not being met.
Staff attitudes towards death and dying can also be problematic when it comes to coding the predicted stage of illness and prognosis. This can be difficult to determine and some staff felt reluctant to "think in these terms". In her paper exploring the management of the dying process and the relationship between life and death in English nursing homes, Katherine Froggatt describes how care home staff are required to care for residents whatever their position on a continuum between living and dying, and the uncertainty inherent in the boundary between life and death for many residents . She points out that in order to set dying residents apart from the living, knowledge is required that allows a resident to be defined as dying. However, many residents die following a process of gradual deterioration, occurring over months and years. She too, describes instances where residents have "bounced back".
We found that for some homes, the increased paperwork and lack of resources (time, money, and staff) were a problem. Some found it difficult to cope with the extra workload. In a study examining practitioners' perspectives on the GSF in primary care, the workload associated with the role of the GSF coordinator was one of the most common areas of concern . Staffing, workload issues, and lack of financial resources are the reason some care homes dropped out of Phase II of the GSFCH , with staff shortages and time pressures being issues raised in the report on Phase I of the GSFCH . Limited resources may result in some aspects of end of life care, such as after death care for staff and families, receiving less attention. The evaluation of Phase II of the GSFCH showed that only half the homes had a protocol for the bereaved and this did not increase by the end of the programme . The extent to which staff, residents and families want bereavement support, and how best to provide it, needs to be explored.
Strengths and weaknesses
The main strength of this work is that we have included a wide range of views and experiences. We have included the views of care home managers, nurses, care assistants, and residents and their families - in all care homes involved in the GSFCH in two areas of London. Three limitations of this research are: including homes in different phases of the GSFCH; not knowing how many GPs were implementing the GSF in their practices; and the generalisability of the findings to care homes without the external support provided to the homes in our study. Some homes were in the early stages of implementation of the GSFCH. Although it is useful to include the views of those in different stages of implementation, these were often based on beliefs and expectations rather than on experience. Knowing how many of the GP practices providing care to the homes in our study who were implementing the GSF would have facilitated interpretation of some of our findings. General Practitioners with experience of the GSF tasks and tools may be more supportive than those not involved in the programme. Finally, strong support from the local hospice and Care Home Support Team was available to all care homes in our study. Many care homes in England may not have access to this level of specialist palliative care support. The views and experiences of people working or living in homes implementing the GSFCH without such support may differ from those in our study.
The residents and family members we interviewed had little knowledge of the GSFCH. They tended to talk about the care provided in very general terms, often focusing on recent or particularly memorable events, both good and bad. The possibility that the GSFCH does not necessarily result in better care was raised in the report of Phase II of the GSFCH . It is, therefore, important to explore the impact of the GSFCH on outcomes for residents and their families using a validated measure. The UK End of Life Care Strategy has published recommendations for quality markers and measures for end of life care in care homes, which includes assessment of residents' views regarding the deaths of other residents . There are inequalities in the capacity of care homes to implements end of life care tools such as the GSFCH and the LCP . Only those homes that are judged to have a sufficiently developed organisation, clinical leadership and reasonably stable workforce are encouraged to implement such tools. Less fortunate homes may be excluded from the outside support resulting from implementing these tools. It is important to develop interventions to help care homes who do not reach the necessary standards to start or complete the GSFCH programme and care homes with personal care only (residential homes) to improve the end of life care of their residents.
During the period the interviews were conducted, seven of the nine homes included in this study were progressing through various stages of implementing the GSFCH, and were generally positive about the programme. However, there were perceived barriers to be overcome to fully implement it. Some of these may be overcome as the GSFCH becomes more firmly embedded in these homes. Although this study focuses on a particular quality improvement programme, most of the barriers described by participants reflect the challenges that care homes face as private or third sector providers working with primary care services. Many of the participants' comments resonate with how care homes describe working with the National Health Service, as opposed to palliative care per se. Our findings demonstrate how difficult it can be to provide good care, even with frameworks in place and dedicated facilitation. There is a need to explore ways of overcoming these barriers and the impact of the different components of complex interventions to improve the care of residents. It is also important to investigate the impact of the GSFCH and other quality improvement programmes on a wider range of outcomes, particularly those focussing on the needs and experiences of residents and their families.
The authors declare that they have no competing interests.
SH designed the study, worked on the qualitative analysis and wrote the manuscript. CG and FS conducted the interviews, worked on the qualitative analysis and commented on drafts of the manuscript. IJH contributed to the design of the study and the commented on drafts of the manuscript. All authors have read and approved the final manuscript.
This study was supported from a grant from the Guy's & St Thomas' Charitable Foundation. We are grateful to all the care home staff, residents and their families who took part in this study.
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