Appraisal of literature reviews on end-of-life care for minority ethnic groups in the UK and a critical comparison with policy recommendations from the UK end-of-life care strategy
BMC Health Services Research volume 11, Article number: 141 (2011)
Evidence of low end-of-life (EoL) care service use by minority ethnic groups in the UK has given rise to a body of research and a number of reviews of the literature. This article aims to review and evaluate literature reviews on minority ethnic groups and EoL care in the UK and assess their suitability as an evidence base for policy.
Systematic review. Searches were carried out in thirteen electronic databases, eight journals, reference lists, and grey literature. Reviews were included if they concerned minority ethnic groups and EoL care in the UK. Reviews were graded for quality and key themes identified.
Thirteen reviews (2001-2009) met inclusion criteria. Seven took a systematic approach, of which four scored highly for methodological quality (a mean score of six, median seven). The majority of systematic reviews were therefore of a reasonable methodological quality. Most reviews were restricted by ethnic group, aspect of EoL care, or were broader reviews which reported relevant findings. Six key themes were identified.
A number of reviews were systematic and scored highly for methodological quality. These reviews provide a good reflection of the primary evidence and could be used to inform policy. The complexity and inter-relatedness of factors leading to low service use was recognised and reflected in reviews' recommendations for service improvement. Recommendations made in the UK End-of-Life Care Strategy were limited in comparison, and the Strategy's evidence base concerning minority ethnic groups was found to be narrow. Future policy should be embedded strongly in the evidence base to reflect the current literature and minimise bias.
Evidence-based public healthcare policy
Public health policy is ideally informed by an up-to-date and unbiased evidence base . This can take the form of research studies, expert opinion, public consultations and literature reviews (systematic or traditional narrative). Many of these sources are potentially subject to various forms of bias. Systematic literature reviews, however, are distinguished from traditional narrative reviews by attempts to minimise bias through the employment of a transparent, rigorous and repeatable review procedure [2, 3]. Systematic reviews are becoming increasingly important in healthcare research [1, 4] and are particularly useful for policy makers as they not only summarise a large body of literature, but enable novel insights to emerge from the synthesis of multiple studies findings . The systematic review of quantitative studies, particularly randomised controlled trials (RCTs), has come to be seen as a 'gold standard' in healthcare research .
Systematic reviews of qualitative studies are, however, also important, as quantitative research can be inadequate for the comprehension of important issues such as understanding patients' healthcare seeking behaviour or the acceptability of interventions [6, 7]. These may be better ascertained through thorough, in-depth, qualitative research into practitioners' and patients' attitudes, beliefs, and preferences [6, 7]. As such, the systematic review of qualitative literature is also gaining popularity in healthcare research .
End-of-life care: the minority ethnic group experience
The low use of services by members of minority ethnic groups is an issue which is gaining increasing attention from policy makers within end-of-life (EoL) care (the term 'minority ethnic group' is used, in accordance with the official classification used by the UK Office for National Statistics, to describe groups other than 'white British'). First highlighted by Rees , in a study of 'immigrant' use of one hospice, the issue did not, however, reach the policy agenda until a decade later, when Hill and Penso  drew attention to disparities between minority ethnic groups' estimated need of services and their actual service use. Further research has confirmed low use of EoL care services and identified a number of reasons for this, including: younger population age structure; lower rates of cancer; lower rates of referrals; low awareness of services; and, some culturally inappropriate services [10–18], This growing body of literature has given rise to a number of literature reviews, which have focused on various aspects of EoL care and minority ethnic groups [19–31]. Given the number of reviews and their range of foci it is essential to assess their quality and, therefore, their potential to represent the evidence base and inform policy. A similar approach has been used for the evaluation of literature reviews of palliative care services  and interventions to improve care .
Various policy initiatives have included commitments to ensure equal access for people from minority ethnic groups to EoL care services [27, 34–37]. The most recent of which is the End-of-Life Care Strategy , the Department of Health's first comprehensive policy document for EoL care . Some policy documents explicitly state the importance of sensitivity to cultural and religious differences and the need for services to provide 'culturally sensitive' care to reduce inequalities [27, 35–37]. Cultural competency training is also identified as a priority for healthcare staff [27, 35–37].
Aim and objectives
This article aims to evaluate the reviews of the literature concerning minority ethnic groups and EoL care in the UK. It is important to critically assess reviews in order to examine their quality, identify gaps in knowledge and assess their suitability as an evidence base for policy.
Specific objectives include: to identify all reviews (systematic and non-systematic) regarding minority ethnic groups and EoL care from the UK; to examine the methodological quality of the reviews; to carry out an interpretive synthesis of reviews' findings; and, to identify recommendations for service improvement.
This work was undertaken as part of the 'PRISMA' programme . 'Reflecting the Positive diveRsities of European prIorities for reSearch and Measurement in end of life cAre' (PRISMA) is a three year coordinating action funded by the European Union under the Seventh Framework Programme (FP7) . PRISMA is an integrated programme consisting of eight work packages which aim to co-ordinate research priorities and practice about end-of-life care across Europe and Africa . PRISMA incorporated a work package on the influence of culture on EoL care .
Thirteen electronic databases were searched using the search terms in table 1. In addition, the reference lists of retrieved articles and the archives of key journals (selected if they contained a high number of relevant articles or were medical social science, death and/or palliative care specific) were searched (table 1). Publications by authors of included articles were searched via authors' web pages (when available) and the Web of Knowledge 'author search' facility. In addition, as part of the PRISMA project a network of experts in cultural issues in EoL care was set up. Experts recommended literature, including unpublished and grey literature.
Reviews were included if they reported on minority ethnic groups and EoL care in the United Kingdom (UK). Only literature reviews were included; a systematic review of primary research has been undertaken as a second part of the project and published elsewhere . No relevant foreign language reviews were identified.
Both traditional (non-systematic) and systematic reviews were included. Non-systematic reviews were included, despite difficulties in assessing both their methodological quality and their propensity for bias, because the use of systematic search procedures is a relatively recent development, especially for qualitative and mixed method research. To thoroughly appraise all reviews of the literature on minority ethnic groups, which have potentially influenced British policy, the inclusion of non-systematic reviews was necessary.
Screening and data extraction
Articles were managed in Endnote X2. Titles and abstracts were initially assessed by one reviewer (NE) to eliminate those not related to EoL care. All remaining titles and abstracts were then assessed for relevance in regular team meetings (minimum three participants). When there was insufficient information to decide upon inclusion, the full text was retrieved and appraised. Data were extracted from full text copies of the reviews (tables 2 and 3) by one reviewer (NE) and checked by another (MG).
Assessment of methodological quality
Reviews that took a systematic approach were appraised for methodological quality (table 3) using a grading scheme adapted from Russell, et al.  and influenced by Hawker, et al. , Greenhalgh , Goldsmith, et al.  and Mays, et al. . Five areas of reporting were graded: specifying the objectives; searching the literature; selecting relevant and valid studies; critical appraisal of studies; and, synthesis of data and presentation of findings (more details in table 3). Reviews were graded independently by two reviewers (NE and MG) and then compared. Differences were discussed in team meetings (minimum 3 people) and resolved by consensus. It was only possible to grade the methodological quality of reviews that had followed a systematic search procedure.
No studies were excluded on the basis of quality, as it was not possible to grade non-systematic reviews. In addition, there is no agreement on the role of quality criteria especially when reviews include qualitative and mixed methods studies. Instead, for transparency, it has been made explicit which reviews are systematic and which are non-systematic. Furthermore, the difference in quality of systematic reviews is highlighted in the score breakdown (table 3).
Identification of key themes
An interpretative approach, following the principles of constant comparison was used to identify key themes from the reviews [45, 46]. The findings from each review were coded, categorised and summarised. Codes and categories were iteratively compared and contrasted, cross-cutting themes were identified, which were reduced to a number of key themes [45, 46]. Finally, a narrative synthesis of findings concerning the key themes was conducted, paying particular attention to commonalities and discordance between reviews.
This article does not intend, however, that a review of reviews should be used as an evidence base for policy. Such an approach would presuppose that those who conducted the original reviews were correct in both their approach and assessments of the evidence. In contrast, the purpose of this synthesis is to provide a representation of the findings of existing reviews of the literature.
After removing duplicates, a total of 5882 citations were screened. Of these, 5720 were discarded after reviewing the title and abstract as they did not fulfil the inclusion criteria. Thirty-six articles were not available for full text assessment (none of these were reviews). The full text of 126 articles was examined in more detail. On closer examination, 13 articles were found not to meet inclusion criteria and a further 100 were not reviews (45 original studies and 55 other articles). A total of 13 reviews met inclusion criteria (Figure 1), details of reviews [19–31] and related articles  can be seen in table 2.
A number of included reviews had a narrow focus; restricting the review by ethnic group , a particular aspect of EoL care [21, 22], or EoL care setting [29, 31]. In addition, broader reviews of cancer services and minority ethnic groups were included if they reported significant findings regarding EoL care [19, 23]. All reviews were published between 2001 and 2009 (table 2).
Reviews' inclusion criteria differed in line with their varied focus. In addition, five reviews only included primary research [19, 21, 23, 24, 31], whereas eight reviews [20, 22, 25–30] included overviews, opinion pieces, and even web-based resources to build a picture of minority ethnic groups' experience of EoL care. The majority of the articles included in the reviews came from the UK; five reviews [19, 23, 27, 29, 30] included evidence from the UK only, whereas eight reviews included non-UK sources to a greater or lesser extent [20–22, 24–26, 28, 31]. Where reviews included material from non-UK sources this has been highlighted in table 2. Due to the difference in reviews' aim, scope and inclusion criteria it is difficult to judge the success or the relevance of a review by the number of articles included alone.
Descriptions of the review process ranged from no information to thorough outlines of a systematic review procedure. Seven reviews followed a systematic search procedure [19–24, 31]. These reviews were graded for methodological quality according to the criteria in table 3. Quality scores ranged from four to nine out of ten. The mean score was six (median seven), indicating that the 'systematic' reviews were, on average, of a reasonable methodological quality (table 3). These reviews all included electronic database searches and most included reference list searches [19–24, 31]. Three reviews included journal hand-searches [21, 22, 31], one searched grey literature , and one contacted experts in the field . The number of reviewers was rarely explicit. Three reviews graded studies for quality [21, 23, 31]. Four 'systematic' reviews did not grade articles or explicitly rejected grading [19, 20, 22, 24]. The synthesis of data and presentation of findings was found to be good in most reviews (table 3).
The remaining six reviews did not provide sufficient information to allow the grading of quality [25–30]. A lack of detail does not necessarily mean the review process was of poor quality or that results are less significant. It is not, however, possible to assess the rigour of the review process.
Key themes and findings
An interpretative synthesis of review findings resulted in the following six themes: structural inequality; inequality by disease group; referrals; place of care and death; awareness and communication issues; and, cultural competency.
Structural inequalities which people from minority ethnic groups face due to socio-economic and geographic disadvantages was a reoccurring theme [21, 24, 28, 48]. Services were acknowledged to be 'disproportionally needed in areas of social deprivation, and disproportionally present in areas of social affluence' . Inequality in provision is partly due to the predominately charitable nature of service development; with more donations received in wealthier areas [28, 48]. Minority ethnic groups, therefore, face 'double discrimination', as higher concentrations of such groups are found in areas of social deprivation, and even within these areas they have low service use in comparison to 'white British' service users . Elderly members of minority ethnic groups were said to be particularly vulnerable due to the combined effects of low socio-economic status and discrimination [28, 29]. Furthermore, carers reported additional problems, such as anxieties regarding housing and visas [23, 30].
Inequality by disease group
Differences in cancer incidence and mortality were highlighted in a number of reviews [19, 20, 23, 25–28] and the focus on cancer in EoL care provision was cited as a major source of inequality due to the greater importance of non-malignant diseases among minority ethnic groups [20, 21, 25, 30]. Limited service provision for non-malignant diseases was attributed to: uncertain disease trajectories; limited service capacity; different expectations of carers and patients; and, a lack of appropriate expertise . The reviews that focused only on cancer services, however, highlighted that as age structures and lifestyles converge, cancer incidence and mortality among minority ethnic groups can be expected to increase [23, 26, 28].
Patients from minority ethnic groups were said to lack 'timely referrals' to specialist EoL care services [21, 23, 28, 31]. Reasons included a limited knowledge of services and the referral process among physicians who are not EoL care or cancer specialists . Physicians were said to resist sharing patients and to perceive institutional care as inappropriate for minority ethnic groups, who prefer to 'look after their own' [21, 29, 31]. General practitioners were also seen as 'gate-keeping' services through the referral process and poor communication with general practitioners could limit access . Furthermore, some patients rejected referral due to negative perceptions of services .
Place of death and care
Recent policy initiatives have promoted home deaths on the basis of a reported preference among patients to die at home [27, 30]. A number of reviews highlighted the perceived preference among minority ethnic groups for home care [21, 23, 29]. Payne et al. , however, found that the preferred place of death for people from the Chinese community was dependent on multiple factors, including the quality of housing and the length of time spent in housing, and that services could be acceptable when well-established and understood by members of the Chinese community . In contrast, Walshe et al.  emphasised that different ethnic groups could have different perceptions of hospice care by highlighting a study in which 'those of Chinese origin living in the UK' were said to perceive hospice care negatively . Above all, the need for discussion and choice regarding place of death was identified as a priority by members of minority ethnic groups .
Awareness and communication
Lack of information in an appropriate format, negative perceptions and low awareness of services were identified as barriers to service use [19, 25, 28]. Problems persisted once services had been accessed; poor communication between patients and their families and healthcare professionals was an issue repeatedly emphasised [20–22, 25, 26, 28, 48]. Four reviews emphasised the importance of good communication above all other factors [19, 22, 26]. Specific problems included: a lack of information provided in appropriate languages and formats [19, 25, 28]; inadequate interpreting and advocacy provision [19, 25, 28]; differences in social taboos about death and illness [22, 25, 28]; and, difficulties in understanding and communicating both verbally and non-verbally [22, 49]. Due to limited resources, family members were used to interpret information of a sensitive or unsuitable nature, increasing the risk of non-disclosure . Jones , however, called for understanding in regard to disclosure and involvement of family members in decision-making. Furthermore, Payne et al.  found that most Chinese patients viewed family members as having an important collaborative role in EoL decision-making.
The communication of patients' wishes through advance care planning was discussed just twice in the reviews. Payne et al.  found that Chinese patients were more likely to prefer life sustaining treatments and less likely to desire euthanasia. Similarly, Cox et al.  emphasised the effects of cultural background on decision-making.
Negative perceptions towards services were considered significant impediments to increased utilisation, and some services were identified as culturally insensitive . A common recommendation was the need for training in care that is sensitive to cultural difference [23–25, 28, 29, 48]. Only one review, however, explicitly defined the terms used for such care ('cultural competence' and 'cultural safety') . In contrast to the frequent recognition that services need to provide culturally competent care, few reviews provided recommendations about how to achieve this. Only one review highlighted the large numbers of minority ethnic staff working in the healthcare services . Cultural differences were said to lead to uncertainty, even when staff were trained in 'cultural competency' issues .
Concerns were raised about deterministic links between cultural, ethnic or religious factors and EoL preferences (an approach referred to as the 'cookbook' approach)  and the stereotyping of patients was warned against [19, 20]. Jones  stated that the majority of literature regarding healthcare and minority ethnic groups merely presents information about religious rituals and beliefs. Whereas, Payne et al. , in an exploration of Chinese cultural perspectives on EoL care, found that there was little evidence to support Chinese stereotypes. These concerns led authors to emphasize that meeting 'cultural' needs is only part of meeting patients' individual needs [19, 20, 24, 28, 30]. In contrast, Cox et al.  stated that becoming 'aware' of attitudes, values, beliefs and cultural norms can improve minority ethnic groups' involvement in decision-making. The importance of monitoring service users' ethnicity was frequently stressed [20, 23, 25, 29–31]. However, data was said to be inadequately collected and rarely used to influence service provision [25, 29].
Recommendations for service improvement
A number of recommendations were made in the reviews for improving EoL care services for minority ethnic groups (table 4).
The literature reviews concerning minority ethnic groups and EoL care in the UK described a range of social, institutional, epidemiological and cultural reasons for low service use and identified some distinct EoL preferences and needs. In light of this evidence, in order to improve the use of, and satisfaction with, palliative care services by such groups, it is necessary to recognise the complexity of factors leading to low service use and sub-standard provision of care and implement a systematic, organisation wide, approach to tackling these multiple and inter-related factors. The influence of these multiple and inter-related factors was reflected in the reviews' recommendations for service improvement (table 4).
Of the thirteen reviews identified, seven took a systematic approach [19–24, 31], and four scored highly for methodological quality [19, 21, 23, 50]. These reviews provide a good reflection of the evidence base and could be used to inform policy. Six reviews did not provide sufficient information for their quality to be graded, including the End-of-Life Care Strategy: Equality Impact Assessment . The aim of this document was to ensure that the UK End-of-Life Care Strategy  'does not inadvertently create inequality', but referenced just seven articles concerning 'race' and 'religion'.
Due to the relatively small number of articles included in the End-of-Life Care Strategy: Equality Impact Assessment , the themes and recommendations identified from the literature reviews were compared and contrasted with those of the End-of-Life Care Strategy .
The recommendations regarding minority ethnic groups made within the Strategy (table 5) were more limited than those made within the reviews (table 4), and omitted a number of recommendations made in its own Equality Impact Assessment  (table 4). The recommendations focused on problems that arise during the physician-patient encounter (such as issues regarding communication and awareness of different EoL preferences) or raising awareness of services amongst minority ethnic groups (table 5).
Although inequalities in service provision due to geographical factors or disease group were addressed in the Strategy, their contribution to low service use by minority ethnic groups was not recognised. In addition, a lack of timely referrals for members of minority ethnic groups was not mentioned.
No mention was made to minority ethnic groups in the Strategy's sections on 'place of death', 'core principles and competencies', 'education, training and continued development', 'improving the environment', 'prisons and secure units' (even though one third of prisoners come from minority ethnic groups ) and 'future research'.
The need for 'spiritual, religious and cultural care competences' to be 'adopted within all core training' was highlighted, however, these needs were not repeated in the Strategy's sections regarding 'core principles and competencies' and 'education, training and continued development'. In addition, the Strategy took an apparent 'cookbook' approach regarding organ donation, providing the link to a website on 'the perspectives on organ donation of the six major religions in the UK' , an approach criticised within the reviews.
In both the End-of-Life Care Strategy  and the End-of-Life Care Strategy: Equality Impact Assessment  the terms used to describe people from minority ethnic groups were questionable. A case study which described an 'engagement project' referred to the establishment of a dialogue between the hospice and 'ethnic communities' . Use of the term 'ethnic' to describe 'minority ethnic groups' implies that 'ethnicity' is something that only 'minority ethnic groups' have, rather than recognising that, in fact, 'ethnicity' is something that everyone has. Furthermore, the End-of-Life Care Strategy: Equality Impact Assessment  used the terms 'minority ethnic', 'black and minority ethnic' and 'race' interchangeably, implying equivalence.
The evidence base which informed the Strategy's recommendations on minority ethnic groups was found to be small. The bibliography includes just one review (Cox et al. , which was restricted to looking at minority ethnic groups' involvement in advance care planning). Moreover, just five studies and one report concerning minority ethnic groups were cited [18, 22, 28, 52–55]. The End-of-Life Care Strategy: Equality Impact Assessment  did not cite any reviews. Its sections on 'race' and 'religion', however, highlighted a paucity of research looking at inequality due to 'racial' or 'religious' factors and referenced just seven articles [18, 52, 54, 56–59], only five of which were original studies .
Thirteen reviews concerning minority ethnic groups and EoL care in the UK were identified, of which seven took a systematic approach [19–24, 31]. However, the reviews identified either had a narrow focus, such as restricting the review by ethnic group  or a particular aspect of EoL care [21, 22, 31], or were broader reviews of cancer services and minority ethnic groups that reported significant findings regarding EoL care [19, 23]. Only one systematic review specifically focused on minority ethnic groups and EoL care in the UK . However, this review received a low quality score (4) and most articles included came from outside the UK. There remains a need for a thorough systematic review of EoL care and minority ethnic groups in the UK to improve the evidence base on which policy initiatives are ideally based.
Thirteen reviews of the literature concerning minority ethnic groups and EoL care were identified. A number of reviews were systematic and scored highly for methodological quality. These reviews provide a good reflection of the primary evidence and could be used to inform policy. The complexity of inter-related social, institutional, epidemiological and cultural factors leading to low service use were recognised and this complexity was reflected in the reviews' recommendations for service improvement. Recommendations made in the End-of-Life Care Strategy were limited in comparison. However, despite certain omissions, the recommendations made within the Strategy give the impression that minority ethnic groups had been taken into consideration. The lack of integration, however, of these recommendations into key sections of the document brings their real impact into question. In addition, the evidence base, on which recommendations were made, was found to be narrow and some important issues addressed in the Equality Impact Assessment were not addressed.
Public healthcare policy is ideally based upon systematic reviews of the literature. All but three of the thirteen reviews of the literature identified [23, 29, 31] had been published prior to the publication of the End-of-Life Care Strategy. In response to the finding that these reviews had a minimal influence on the End-of-Life Care Strategy, it is recommended that future policy be based upon systematic reviews of the current literature, or at least upon existing systematic reviews, in order to reflect the current evidence and minimise bias.
Six non-systematic (narrative) reviews (which are more at risk of selection bias) were included. Furthermore, publication bias towards quantitative studies whose results are statistically significant, and towards qualitative studies which have striking or easily understandable findings, may introduce sources of bias into systematic reviews of the literature. The reviews which took a systematic approach were of varying quality, although on average they were of a reasonable standard. The narrow focus of some reviews may have biased results towards these topics.
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Acknowledgements and funding
PRISMA is funded by the European Commission's Seventh Framework Programme (contract number: Health-F2-2008-201655) with the overall aim to co-ordinate high-quality international research into end-of-life cancer care. PRISMA aims to provide evidence and guidance on best practice to ensure that research can measure and improve outcomes for patients and families. PRISMA activities aim to reflect the preferences and cultural diversities of citizens, the clinical priorities of clinicians, and appropriately measure multidimensional outcomes across settings where end-of-life care is delivered. Principal Investigator: Richard Harding. Scientific Director: Irene J Higginson. In recognition of the collaborative nature of PRISMA, the authors thank the following PRISMA members: Gwenda Albers, Barbara Antunes, Ana Barros Pinto, Claudia Bausewein, Dorothee Bechinger-English, Hamid Benalia, Lucy Bradley, Lucas Ceulemans, Barbara A Daveson, Luc Deliens, Noël Derycke, Martine de Vlieger, Let Dillen, Julia Downing, Michael Echteld, Natalie Evans, Dagny Faksvåg Haugen, Lindsay Flood, Nancy Gikaara, Barbara Gomes, Marjolein Gysels, Sue Hall, Richard Harding, Irene J Higginson, Stein Kaasa, Jonathan Koffman, Anne Kvikstad, Pedro Lopes Ferreira, Johan Menten, Natalia Monteiro Calanzani, Fliss Murtagh, Bregje Onwuteaka-Philipsen, Roeline Pasman, Francesca Pettenati, Robert Pool, Tony Powell, Miel Ribbe, Katrin Sigurdardottir, Franco Toscani, Bart Van den Eynden, Jenny van der Steen, Paul Vanden Berghe, Trudie van Iersel. In addition, the authors thank Yasmin Gunaratnam for comments regarding the terminology used in the End-of-Life Care Strategy.
The authors declare that they have no competing interests.
NE designed the search strategy, screened articles, carried out data extraction, graded papers, participated in team meetings in which grading of papers was discussed, analysed results and drafted the manuscript. AM participated in team meetings in which grading of papers was discussed and helped to draft the manuscript. EA participated in team meetings in which grading of papers was discussed and helped to draft the manuscript. JK provided help with the search strategy and helped to draft the manuscript. RH participated in its design and coordination of the project and helped to draft the manuscript. IH participated in its design and coordination of the project and helped to draft the manuscript. RP participated in its design and coordination of the project and helped to draft the manuscript. MG screened articles, carried out data extraction, graded papers, analysed findings, participated in team meetings in which grading of papers was discussed, conceived the project and helped to draft the manuscript. All authors read and approved the final manuscript.
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Evans, N., Meñaca, A., Andrew, E.V. et al. Appraisal of literature reviews on end-of-life care for minority ethnic groups in the UK and a critical comparison with policy recommendations from the UK end-of-life care strategy. BMC Health Serv Res 11, 141 (2011). https://doi.org/10.1186/1472-6963-11-141