Critiquing Nursing Research 2nd Edition
By John Cutcliffe and Martin Ward
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Critiquing Nursing Research 2nd Edition - John Cutcliffe
Title page
Critiquing Nursing Research
2nd edition
John Cutcliffe and Martin Ward
Publisher information
Quay Books Division, MA Healthcare Ltd, St Jude’s Church, Dulwich Road, London SE24 0PB
© MA Healthcare Limited 2006
2014 digital version by Andrews UK Limited
www.andrewsuk.com
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior permission from the publishers
Note
Health care practice and knowledge are constantly changing and developing as new research and treatments, changes in procedures, drugs and equipment become available.
The author and publishers have, as far as is possible, taken care to confirm that the information complies with the latest standards of practice and legislation.
Foreword to the first edition
The Royal College of Nursing Institute is proud to have been associated with the establishment of the Network for Psychiatric Nursing Research (NPNR) in the mid-1990s. As host for this Department of Health (England) funded innovation, the spirit and commitment shown by the originators of the idea, were very much in synchrony with the aspirations and vision of the Institute.
The authors of this book have provided us with a detailed outline of how the network developed, what it was trying to achieve and how it has refined its purposes. Responding to the policy imperative of the evidence-based practice movement, the founders of NPNR have been able to combine the essential ingredients of effective utilisation of evidence into practice; namely, the ability to critique research with a practitioner/researcher network of interested, committed individuals. This combination of critical appraisal skill development (covering both conventional quantitative and qualitative approaches) with dissemination and networking strategies is still quite a rare phenomenon. And the efforts of all those volunteers, who have contributed their intellectual and clinical expertise by way of being involved in critiquing research, or attending NPNR conferences, should also be acknowledged.
But the last words rightly rest with the authors themselves on the future direction of this timely and important initiative. Acknowledging the changing policy and practice landscape, the evolution of a much more integrated, interprofessional, person-centred research agenda and the impact of technology on research dissemination and implementation methods, Cutcliffe and Ward comment:
... Our future success lies in combining all the evidence resources at our disposal, including research, with the spontaneity of our intuitive actions and subjecting both to the same level of critical evaluation. In short, raising the level of our professional thinking to a more mature status.
This book offers one perspective on this journey.
Alison Kitson RN, PhD, FRCN
Executive Director, Nursing
Royal College of Nursing
April 2003
Foreword to the second edition
Apart from the genuine sense of honour that I experienced when I was asked to write the foreword for this book, I also felt that the invitation was timely for another reason. As I write this foreword, I am in the process of retiring from my post at the Institute of Psychiatry, King’s College London, where I have held a Chair of Psychiatric Nursing since 1995. Such an occasion obviously prompts one to look back over one’s career and to consider the way in which knowledge has evolved. As I read the manuscript for this book, I observed that John Cutcliffe and Martin Ward were, in their own way, engaged in a very similar process. That there is now a second edition of this book testifies to the way that our thinking about nursing research has evolved. For my part, I mistakenly thought at the time that I completed my PhD in the early 1980s that the then embryonic movement towards evidence-based medicine in psychiatry would have very clear-cut and positive results for nursing research. As it transpired, the evidence-based approach has brought major benefits - not only to research, but also to patient care. However, at the same time our understanding of what constitutes evidence is, in some senses, less clear now than it was a decade ago. We have come to realise that, although the randomised controlled trial is the gold standard for evaluating the outcomes of treatment, in mental health care the majority of studies published in journals are, from a statistical point of view, grossly under-powered, and many of the measures that we use are riddled with imperfections. If we set these problems alongside the way that we have now developed more robust methods in qualitative research, and the need to justify everything in terms of cost, we have a research scenario that defies simple description. We also need to note that, in mental health care particularly, while evidence, efficacy and effectiveness now constitute imperatives for all services delivering care and treatment, implementation of our knowledge is another matter. We now know that mental health care is beset by a range of problems in implementation, including fidelity to model, the lack of training capacity, and, once more, the issue of cost.
The rationale for the first edition of this book was based on the increasing need for nurses not only to become conversant with research, but also to consider evidence with a critical eye. This rationale is even more pertinent today than at the time of writing the first edition. The book provides nurses, in both the research and clinical fields, with a considerable resource in terms of understanding and critiquing, and this - of course - should have beneficial consequences for patient care. John Cutcliffe and Martin Ward have added to the first edition, which at the time was both comprehensive and authoritative, new material that will be of tremendous assistance to research students in their ‘writing up’, and have also put their original work into the European and broader global context.
I have no doubt that this is a book that will reach researchers at all levels. It will provide the undergraduate with a very useful template; assist the clinical nurse who will be faced with conflicting opinions about what is best for patient care; be a tremendous resource for those writing up research; and, finally, for those who consider themselves senior in the research field, might serve as a wake-up call.
One piece of advice I give frequently, particularly to those working in the field of evidence based medicine, is: ‘To know what you don’t know’. One might also add the advice: ‘If you do know - what is the basis for your knowing and how sound is that basis?’. This book certainly provides an additional instrument in the toolkit of anyone who is setting out to look at knowledge and its acquisition. I look forward to the inevitable third edition, written in years to come, when those things we are certain about today are under scrutiny once more.
Kevin Gournay CBE
FRCPsych (Hon) FMedSci FRCN CPsychol AFBPsS RN PhD DSc
Emeritus Professor, Institute of Psychiatry, King’s College London
July 2006
Preface to the first edition
The reasons for writing this book are best summarised under three points:
There is a distinct absence of books that focus specifically on critiquing nursing research.
There is an increasing requirement for nurses to become conversant with research, understand its link with the use of evidence to underpin practice and move towards being a evidence-based discipline.
A crucial aspect of this increased ‘mindfulness’ of research is an awareness of the contemporary research issues facing nursing and the wider policy, multidisciplinary and political contexts in which these issues are embedded.
Consequently, we feel that having read this book readers should gain an appropriate knowledge and awareness pertaining to these three points. Nurses should be more familiar with some of the approaches and techniques involved in critiquing nursing research and be able to utilise some of these skills and techniques in their own efforts to critique. Accordingly, they will be better placed to make informed judgements regarding the quality of the research paper and the value of the evidence reported. Finally, they should also be able to locate the critiqued paper(s) within the wider policy, multidisciplinary and political contexts.
The book is divided into four integrated parts.
Part 1 contains chapters which set the context and background to critiquing nursing research, explain the purpose and value of the critiquing process and describe the evolution of the Network for Psychiatric Nursing Research (NPNR) and its National Journal Club.
Part 2 is comprised of a range of approaches used to critique nursing research and identifies the strengths and limitations of these approaches. Each approach is also accompanied by two examples of critiques, which are based on critiques undertaken by the NPNR National Journal Club.
In Part 3, the NPNR National Journal Club’s approach to critiquing nursing research is described. Since this is a developmental approach, we provide two additional examples for each of the four stages identified (a total of 16 different critiques of nursing research papers are included throughout the book).
The final part contains a chapter which discusses contemporary trends and themes in psychiatric/mental health nursing research and considers the complex relationship between psychiatric/mental health nursing research and multidisciplinary, collaborative research in the formal area of ‘psychiatric care’. It also looks at the responsibilities for research of both nurse researchers and non-researchers.
The reader will notice that the papers reviewed using the NPNR National Journal Club approach are presented after the reviews undertaken using a range of models. This sequence of reviews was carried out purposefully in this ‘order’ since we wanted an approach to evolve and develop out of the National Journal Club work. Having done so, we were able to compare and contrast our approach with this range of approaches.
John R. Cutcliffe and Martin F. Ward
November 2002
Preface to the second edition
The authors of this book are delighted that we were asked to produce a second edition and that this provided the opportunity for updating and enhancing the original text. The justifications and rationales for writing a book about critiquing nursing research are just as applicable today as they were when we proposed the original edition. Indeed, if the number of papers published in the nursing (and health care) literature that focus on aspects of evidence-based practice are an indication, then it is evident that the rationales for writing this book are stronger than ever.
This edition retains the features which made the original a ‘best seller’ and we have added additional material in the hope that this expands the book’s (to borrow a phrase from Tolkien’s parlance) ‘applicability’. In addition to reviewing and subsequently updating the material of the original text, we have added two further examples of approaches to critique along with examples. Interestingly, our extensive search identified no ‘new’ approach subsequent to the publication of the original text. However, these additional approaches further indicate the width and breadth of different approaches to critiquing research. Interestingly, the approach described by Polit et al. (2001) underpins our original arguments vis à vis the underdevelopment of approaches specifically designed to critique qualitative research studies, and simultaneously illustrates the work that yet remains to be done in that paradigm.
The additional chapter on how to critique research as part of the work of preparing a dissertation arose in response to the requests of students and adds further applicability to critiquing per se. The chapter on European psychiatric nursing research is a specific attempt to acknowledge and respond to trends in global health and international nursing, and not least, the increasing recognition that to limit one’s scope to a particular country (or continent) is to set artificial and highly limiting boundaries on knowledge utilisation and knowledge transfer. Last but not least, Professor Kevin Gournay has written the Foreword to the second Edition, complementing the first provided by Professor Allison Kitson. As with the original book, we welcome feedback and comment and review and hope that such information might inform the production of a third edition.
John Cutcliffe and Martin Ward
September 2006
Reference
Polit, D. F., Beck, C. T. and Hungler, B. P. (2001) Essentials of Nursing Research: Methods, Appraisal and Utilization, 5th edn. Lippincott, Philadelphia.
Acknowledgements
This book could not have been produced without the sterling commitment and efforts of the Journal Club coordinators and members. Accordingly, this book is a tribute to all your hard work.
We offer thanks to Annelie Guard and the previous administrators of the NPNR for their support in maintaining the journal club.
We are most grateful to both Alison and Kevin for writing insightful endorsements in their Forewords.
To all those people who offered helpful and constructive feedback and review comment, we offer our thanks.
And not least, we offer our most profound thanks to our publisher, Helena Raeside, whose patience and industry have helped make this second edition a reality.
John Cutcliffe and Martin Ward
September 2006
Part 1: Background to psychiatric/mental health nursing research and critiquing research
Chapter 1: The growth of evidence-based practice and the importance of critiquing research
Man’s search for meaning is the primary motivation in his life and not a secondary rationalization of instinctive drives (Victor Frankl, Man’s Search for Meaning, 1945)
The movement towards evidence-based practice
A son asks his father, ‘How does petrol make your car work, daddy?’. The father, not wishing to confuse the little boy, and not really knowing himself, replies, ‘Well, when the engine gets thirsty you put the petrol in and the engine drinks it. When it has had enough it feels better and it runs again - just like you’. The boy, not wholly convinced of this, asks further questions, so his father brings out a mechanics manual, then an encyclopaedia, and then takes the boy next door to talk to his neighbour. Finally, in exasperation, the father connects to the Internet and finds a web site that gives the answer the boy needs, at the level he needs it and in a way that not only makes sense to him but also is technically correct for his age and degree of understanding.
Many years later the boy, despite his father, becomes a mechanic. One day a customer asks him, ‘How does petrol make my car work?’. If the son had learnt from his father and gone no further than making things up as he went along he would not have an answer to satisfy the customer’s question. Fortunately, his studies and his training have taught him differently and he is able to provide an answer that equips the customer with the appropriate information. What is the morale of this story? Never listen to your parents? No - it is that there is an answer to every question, but sometimes you have to go to extraordinary lengths to find it and it is not possible to progress your understanding of life until you do.
How does this help us come to a conclusion about the significance of evidence-based mental health care? Perhaps more importantly, how can its implementation help individual practitioners? To answer these questions it is necessary to look back at the history of psychiatric/mental health nursing and its relationship to service development and care delivery.
As a separate speciality, psychiatric/mental health (P/MH) nursing has perhaps only a 100 year history. It was not until the 1910s that, for political reasons, those who cared for the mental ill were seen as separate from those who cared for the physically ill. The science upon which these practitioners based their actions came from a combined source: general nursing and psychiatry. As a consequence, the only thing that differentiated these practitioners from other nurses was the diagnosis of their patients. Two world wars, the increase in psychotherapeutic psychiatry, the introduction of psychotropic medications and a greater public awareness of mental illness shaped their professional actions into something akin to specialist care. However, they were under-educated, made very few clinical decisions and had little power, other than that of a subversive nature. By the late 1950s, their work was dominated by psychiatrists. Despite having their own syllabus for basic training, most of their textbooks were written for them by psychiatrists; psychiatrists sat on their examination boards; and psychiatrists dictated their working conditions and gave them clinical orders.
During this time it would have been very difficult for a mental health nurse to describe what s/he actually did. Yet do something they did, for there were in excess of 250,000 in-patient beds, and nurses were the mainstay of the daily support these people received. Over time the situation changed as nurses began to improve their own understanding of their capabilities, sought higher education, undertook research into their actions and began to share their experiences by writing about them. As they became more articulate they developed professional confidence, took responsibility for their own professional actions and began to develop a body of evidence to support their decisions. In effect, they displayed some of the traits that have been associated with being a profession (though whether or not nursing is a profession falls outside the scope of this book). They influenced the reduction of power differentials between themselves and other disciplines, contributed to general strategic and policy activities and became independent of the restricting influence of the science from which they had sprung. Crucially, nurses started to undertake and lead their own research, and thus began to develop their own unique knowledge base.
During that period of time also, mental health services matured, shedding thousands of beds, developing more therapeutic alternatives rather than relying on the myopic polemicism of community versus in-patient care, and advancing policy which would try to meet the needs of the patient rather than those of the service (Johnson and Thornicroft, 1993; Burns and Priebe, 1999). It could almost be posited that as mental health care evolved, so too did its nurses. The effects are startling. Nurses now take an active part in strategic planning, undertake a large portfolio of personal and professional research, influence clinical care and work collaboratively with service users to develop the diversity of care options necessary to meet the needs of a very specialised target population.
Evidence-based practice and evidence-based mental health care
Much of contemporary P/MH nursing practice is complicated and demands high levels of sophisticated personal and clinical technology. All of it can be complex and demanding. As described above, this shift in emphasis away from loosely defined nursing practices dictated by the actions of psychiatry to ones which form part of dedicated nursing interventions that are brought to bear as part of a collaborative multidisciplinary effort has taken place as a result of many things. One of those is the advent of evidence-based health care (Evidence-Based Medicine Working Group, 1992; Sackett et al., 1996, 1997). Consequently, it is necessary to examine the key components of evidence-based practice - namely research, evidence and critiquing/critical reading of the literature - as well as locating these within the context of the development of evidence-based mental health care.
What is research?
The often quoted definition of research provided by the Department of Health (1994, p. 37) asserts that research is ‘rigorous and systematic enquiry conducted on a scale and using methods commensurate with the issue to be investigated, and designed to lead to more generalised contributions to knowledge’.
Research then involves a systematic search for knowledge, and mental health care research is thus concerned with uncovering knowledge that is important (and useful) for mental health practitioners. As intimated in the Department of Health’s definition, there exists a wide range of research methods and methodologies, which are broadly grouped together under two paradigms: quantitative and qualitative. Each paradigm is concerned with uncovering new knowledge; however, the type of knowledge produced and the way the researchers go about uncovering this knowledge is different within each paradigm.
Kerlinger (1986), one of many advocates of the quantitative approach to research, asserts that the way to truth is through rigorous research, involving the identification of variables within hypotheses and subjecting them to experimental manipulation. Here ‘hard evidence’ is required in order to be certain that something is or is not true. To Kerlinger, this approach is at the peak of a hierarchy of how to know; further down are less respectable ways of knowing, including ‘tenacity’, ‘authority’ and ‘a priori’. The end result of each of these ways of knowing is knowledge; what differs is how the knowledge is acquired. Kerlinger has great respect for knowledge gained through the scientific quantitative method and less for knowledge gained through what he perceives as more subjective approaches. However, the importance of qualitative research, which Kerlinger would describe as ‘subjective’, and the different forms of evidence will be explored in more detail below.
There are commonalities between research and other related forms of enquiry, but there are important differences. Muir Gray (1997, p. 69) declares that, within the UK National Health Service Research and Development programme, these distinguishing features can be summarised as follows. Research should:
provide new knowledge necessary for the improvement of the NHS
produce results that are generalisable
follow well-defined study protocols that have been peer reviewed
have obtained formal approval from an ethical committee where appropriate
have defined arrangements for project management
produce findings that are open to critical examination and accessible to all who could benefit from them (and this would therefore involve publication).
Here too it is acknowledged that different approaches can be used to obtain knowledge, yet there is an intimation that quantitative approaches are favoured. Generalisation is invariably associated with randomised controlled trials, and most researchers who use a qualitative approach would not claim that their findings have nomothetic generalisability. Therefore it is possible in the above description to see plainly the influence of a quantitative way of knowing. The need to confirm and verify takes precedence within this approach. The result is hard numerical data representing reality that is then often accepted as truth and enters the knowledge base of the profession.
The historical dominance of quantitative research within mental health care
Examination of the research undertaken within the domain of psychiatry (and psychiatric nursing) indicates a historical emphasis on quantitative studies. It can be seen that from the mid-1950s onwards a large percentage of the research available to mental health practitioners centred on the trialling of medications. These drug studies were numerous but often of limited quality (Bero and Rennie, 1996; Greenhalgh, 1997a). Significantly, at first, psychiatry was only interested in quantitative studies and in particular, randomised controlled trials (RCTs). Examples of the use of RCTs in psychiatry begin to appear in the professional literature throughout the 1980s, but from the early 1990s onwards there is a marked increase in their numbers (McFarlane et al., 1995; Kulpers et al., 1997; Stensky et al., 2000). This is because much of medical research is quantitative in nature and RCTs were regarded in the UK as the ‘gold standard’ of robust clinical enquiry. However, since the early 1990s those working within psychiatry and mental health care have recognised the need to use the huge amount of other forms of research and other forms of evidence at its disposal to inform its work.
Reviews of RCTs became essential during this time (Haynes et al., 1996; Roth and Fonagy, 1996) because it is impractical for practitioners to read everything that has been published for themselves. Not only that, but not all the RCTs report the same results (Chalmers and Altman, 1995). Hence you might have a situation where half of a group of research projects indicate that treatment X is the best, whilst the other half suggest that treatment Y is of better value. If the practitioner only read the first group of projects s/he would be inclined to use treatment X, and likewise for those only reading papers which recommended treatment Y. Four things, therefore, occurred during the 1990s to deal with the massive increase in available research material:
The development of models to enable individuals to appraise, in a critical manner, or review single and groups of literature papers (Greenhalgh, 1997b; NHSE, 1999).
The development of models to undertake systematic reviews of large amounts of literature (Cullum, 1994; NHS Centre for Reviews and Dissemination, 1996; Hek et al., 2000).
The development of databases and review libraries that would make available completed reviews carried out by panels of clinical and research experts in the field (Lefebvre, 1994; Brazier and Begley, 1996).
The development for researchers of guidelines that would inform the design and management of robust clinical trials (Medical Research Council, 2000).
In theory, these four activities should provide a framework to ensure that practitioners know how to review literature; access reviews of large amounts of literature; and have a better understanding of how to carry out and report on their work. The problem with this is that it assumes that all staff are able to access these skills, or are given them whilst they are undertaking their professional training and education, which patently is not the case. Furthermore, up until the 1990s, it was also (wrongly) assumed that the only critically sound research was that carried out using quantitative methods of enquiry for both nursing and mental health, yet this was patently not the case (Sackett et al., 1997; Ward et al., 1999). As Smith (1998) points out, much of mental health care is not susceptible to quantitative research methods.
The movement towards a more pluralistic approach
As a result, pressure for the inclusion of qualitative research studies and other forms of evidence to be included within the scope of evidence-based practice came from several sources, including professional academia, the social sciences, clinical psychology, nursing and medicine, particularly psychiatry. Their reasoning was obvious and contained two main arguments. Firstly, quantitative research examines known phenomena, e.g. one therapy against another, one or both of which have already been in use and are being compared to establish effectiveness against each other; or the statistical outcome value of a drug used to reduce symptoms for a recognised diagnostic entity such as one of the forms of schizophrenia. However, qualitative researchers suggest that for this research to take place the entity itself has to be placed in context, otherwise it is unclear just what the drug or therapy is acting upon. Thus, as Dodd (2001) argues, this indicates the need for preliminary exploratory, descriptive, contextual, phenomenological and anthropological studies, i.e. those which describe entities, which are the domain of qualitative research.
Secondly, and perhaps more importantly, qualitative research is not simply used to describe contexts for entities. There are known phenomena that in themselves are not susceptible to quantitative processes, e.g. belief structures, feelings and interactions (and an argument has been suggested which purports that much of psychiatric/mental health nursing may be invisible or immeasurable, and thus not accessible using quantitative methods). Thus qualitative methods are required in order to understand the nature and complexity of these phenomena. Mental health care is based upon the principles of human interactions and the ability of service users to develop personal strategies for living. True, for some there is a major role for medication and some other forms of physical therapy in this work, but essentially it is people intensive and deals with emotions, thoughts and adaptability. Similarly, as we have already described, such care is being delivered in ever-changing environments and increasingly in community settings, very often those of the patient’s own home. For research to make sense of these entities and for that research to be of value to practitioners wanting to implement it in their own work it has to be environmentally and people focused. Qualitative researchers argue that these types of service, and the personal work that they undertake, are the domains of their methods.
Further evidence of embracing methodological pluralism
Even the most cursory examination of the extant methodological literature, and perhaps more significantly, the systematic review literature, will show that methodological pluralism is becoming the latest orthodoxy. Inextricably linked to this development