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Attitudes towards, and knowledgeof, clinical effectiveness in nurses, midwives,practice nurses and health visitors
Dominic Upton BSc MSc PhD AFBPsS and C. Psychol
Senior Lecturer in Psychology, University of Wales Institute, Cardiff,
Faculty of Community Health Sciences, Llandaff, Cardiff, CF5 6YB, UK
Accepted for publication 1 May 1995
UPTONUPTON D.D. (1999)(1999) Journal of Advanced Nursing 29(4), 885±893
Attitudes towards, and knowledge of, clinical effectiveness in nurses,
midwives, practice nurses and health visitors
The dual concepts of evidence-based practice and clinical effectiveness have
become ever more important for nurses, midwives and health visitors in recent
years. In order that suitable initiatives can be derived and future policy shaped
and evaluated it is important that the current level of knowledge and attitudes
towards these concepts are recorded. The current study set out to examine these
variables in a large, representative sample (n � 370, response rate � 74%) of
nurses, midwives and health visitors. Results indicated that although a positive
attitude towards evidence-based practice exists, individuals consider
themselves to be lacking in certain key skills. Speci®cally, these appeared to be
related to research-based skills. However, despite this, respondents indicated a
large take up of evidence-based practice, although this may have been greater
were it not for the considerable clinical workload. The necessity for greater
dissemination of key research principles to nurses, midwives and health visitors
by members of their own profession is emphasized.
Keywords: attitudes, clinical effectiveness, evidence-based practice, nursing,
midwifery
INTRODUCTION
It is often assumed that decisions with potential social,
personal or medical implications are taken on the basis of
the best available evidence, rather than on the basis of
irrelevant evidence, or no evidence at all. However, this is
often not the case (Smith 1996). This realization has led to
the concepts of clinical effectiveness and evidence-based
practice becoming increasingly important in health care.
Indeed, in the recent White Paper on the future of the
National Health Service (NHS) within the United King-
dom the importance of clinical effectiveness was stressed
and a new National Institute for Clinical Excellence
(NICE) charged with evaluating the clinical and cost
effectiveness of new medical procedures proposed (Wal-
she 1998). The assumption is that the move towards
evidence-based practice could have a profound impact on
clinical activities in the health services and result in many
patients receiving better care and enjoying better health as
a consequence and, it has to be acknowledged, reduce the
substantial sums spent on ineffective or unproven diag-
nosis and treatment (Appleby et al. 1995).
Although the major focus of interest has been in the
medical ®eld (e.g. Sackett et al. 1997), this situation is
altering and the terms clinical effectiveness and evidence-
based practice are becoming ever more familiar within
both the professions allied to medicine (Kitchen 1997) and
the nursing profession (Kitson 1997a, Newell 1997).
However, this is not to say that the concept has become
fully integrated into the nursing profession. Indeed, some
have argued that the simple translation of evidence-based
medicine to evidence-based nursing or evidence-based
Journal of Advanced Nursing, 1999, 29(4), 885±893 Issues and innovations in nursing practice
Ó 1999 Blackwell Science Ltd 885
practice may be inappropriate without an alteration to
some elements of the underlying conceptual framework
(Kitson 1997a).
The concept of research-based practice is not new. The
Briggs Committee on Nursing (DHSS 1972) recommended
that nursing develop into a research-based profession. The
evidence on whether this has happened is, to date,
equivocal (McSherry 1997). There are barriers to the
implementation of research evidence into clinical practice
and these include such factors as the relative late uptake
of nursing research (Kitson 1997a); recurrent methodolog-
ical dif®culties in nursing research (Thomas & Bond
1995); lack of autonomy in nursing and the inaccessibility
of some research ®ndings (Walsh 1997); lack of both
research knowledge and the con®dence to implement
these ®ndings (Meah et al. 1996); and possibly lack of time
and funding opportunities (Marsh & Brown 1992). How-
ever, it is uncertain whether these same barriers exist to
impede the implementation of evidence-based practice
and whether recent initiatives have resulted in breaking
down some of these barriers.
There have been a number of developments supporting
the impetus of evidence-based practice: there are now a
number of journals (e.g. Clinical Effectiveness in Nursing),
books (e.g. Sackett et al. 1997), information sources (e.g.
Cochrane Collaboration) and policy-based initiatives in
both Scotland and Wales (Appleby et al. 1995) dedicated
to the subject. For example, one particular policy-led, and
proactive, development is the Welsh Of®ce Clinical Effec-
tiveness Initiative and a series of brie®ng papers have been
published to support implementation of this Initiative
(Welsh Of®ce 1995a, b, 1996a, b, c).
The success of some of these developments, and the
more general culture change required in order to produce
an evidence-based practice ethos throughout the health
service, requires a number of issues to be addressed
(Appleby et al. 1995). This does not necessarily refer
simply to strategic or organization developments but also
the practice, behaviour and attitudes of individual clini-
cians needs to be addressed. As Newell (1997) states:
`Many of the NHS strategies to promote change in imple-
menting clinical effectiveness operate primarily at the
institutional level, but the attitudes and behaviours of
individual clinicians also needs to be affected'.
The aim of many of the initiatives discussed is an
attempt at altering the attitudes and behaviours of clini-
cians. A sine qua non of this approach is a baseline level
of knowledge, attitude and practice to determine both the
success of any future interventions and to both frame and
direct these future interventions. The aim of the survey
reported here is to document and record the level of
knowledge of clinical effectiveness and evidence-based
practice and examine the attitudes towards these concepts
by a representative sample of nurses, midwives and health
visitors. Furthermore, it was intended to identify any
possible barriers to the implementation of evidence-based
practice and any possible solutions to overcome these
barriers.
THE STUDY
Method
In order to obtain the data a two-stage process was
adopted. Initially, a postal survey of a large, representative
sample of nurses, midwives and health visitors and
secondly, more in-depth interviews of a smaller number
of the sample. The focus of this report is on the postal
survey data; an analysis of the interview data will be
provided in a separate report.
SampleThe sample consisted of 500 subjects drawn from the
Welsh population of nurses, midwives, health visitors and
practice nurses. In order to obtain a sample representative
of the Welsh population of these professions a strati®ca-
tion of the sample was undertaken based upon the
population ®gures provided by the Welsh Of®ce (1996d).
Table 1 indicates the number in each professional group
within Wales and the corresponding strata for the sample.
The number of respondents, and consequently the re-
sponse rate, is also presented. Table 1 indicates that the
largest professional group were the nurses, which ac-
counted for 83% of the sample. In contrast, the midwives
Table 1 Strati®cation of sample and response rate
Professional group Number in Wales
Number of subjects
included in sample
Number of questionnaires
received Response rate (%)
Nurse 13880 415 295 71
Midwives 1851 55 50 90
Health visitors 334 10 9 90
Practice nurses 611 20 17 85
Total 16676 500 370 74
D. Upton
886 Ó 1999 Blackwell Science Ltd, Journal of Advanced Nursing, 29(4), 885±893
only accounted for 11%, the health visitors 2% and the
practice nurses 4%.
The study questionnaireInitially a questionnaire/attitude scale was designed to
address the aims of the study (see Upton & Lewis 1997 for
the development of the questionnaire). The questionnaire
sought to explore the following areas of interest.
Knowledge of clinical effectiveness and evidence-based practice
Items requested an individual to rate their perceived level
of knowledge of clinical effectiveness and evidence-based
practice at a general level on a visual analogue scale from 1
(`I know a great deal about clinical effectiveness and
evidence-based practice') to 5 (`I know very little about
clinical effectiveness and evidence-based practice'). An-
other subsection dealt with perceived knowledge of the
individual component skills of evidence-based practice
(e.g. research skills, awareness of major information types
and sources) with the individual respondent rating their
own ability from 1 (poor) to 7 (the best).
Practice of individual components of clinical effectiveness and
evidence-based practice
Individual respondents were requested to rate the fre-
quency of completing certain component key steps of
evidence-based practice (Sackett et al. 1997). For example,
how frequently (from Never to Frequently) had the indi-
vidual component `identi®ed a gap in my knowledge
which I need to ®ll'.
Attitudes towards clinical effectiveness and evidence-based
practice
Statements took one of two forms: a set of semantic
differentials required the individual to indicate at which
end of the spectrum of two opposing statements (e.g.
`evidence-based practice is a waste of time' to `evidence-
based practice is fundamental to professional practice')
they would place themselves; and a set of attitude state-
ments requiring the individual to indicate to what extent
they agreed or disagreed with each (e.g. `the evidence on
my practice is not worth the time involved in ®nding it').
Barriers and solutions
Individuals were requested to rate their level of agreement
as to the extent they perceived whether a list of possible
barriers were, indeed, barriers to their implementation of
evidence-based practice. A similar method was adopted
for the possible solutions to increasing the uptake of
clinical effectiveness and evidence-based practice.
Demographic details
An individual's age, sex, profession and grade were
requested.
ProcedureIn order to obtain the sample, a random sampling proce-
dure was adopted. In this way, an individual hospital/unit
from all those within Wales was selected using a random
number technique. A total of 21 hospital/units covering
the whole of Wales were approached for subjects from the
nursing profession and ®ve units for the midwifery sample
(no unit refused to participate). Subsequently, an individ-
ual ward/department was identi®ed within each hospital/
unit, again by random selection. The head of this ward/
department was then approached and their assistance
requested in the completion of the study. If they agreed to
participate (and none refused) then the number of indi-
viduals within the particular ward/department was
obtained. Subsequently, a number of questionnaires
suf®cient for the total number of quali®ed staff, with
explanatory letters and postage-paid return envelopes,
was sent to the head of the ward/department with a
request for them to distribute the questionnaires and
instruction letters to all members of quali®ed staff. This
was, consequently, a form of cluster sampling. It was not
possible to contact members of the nursing and midwifery
professions on an individual basis due to the unavailabil-
ity of a complete sampling frame.
In contrast, practice nurses and health visitors were
individually identi®ed, again using a random technique,
and each sent an individual questionnaire requesting their
assistance. The information was obtained by randomly
selecting individual practices from areas within which
health visitors and practice nurses operate. Consequently,
for example, all GP surgeries, health centres and associ-
ated units formed the sampling frame. From this total
population, 10 individual health visitors and 20 practice
nurses were randomly selected from individual units. No
individual refused to participate at this stage, although in
four cases individual health visitors were unable to be
contacted and another practice was therefore selected.
The survey commenced in April 1997 and was com-
pleted some 4 months later. It was felt essential to
complete the survey in as short a time as possible in
order to place the results within the stability of a speci®ed
time period.
Once received, all returned questionnaires were coded
and analysed on SPSS for Windows, version 7á5.
Results
1 The sampleOf the 370 responses some 92% (n � 341) were female. In
terms of grading, the majority (31%, n � 114) were at
grade E, while » 6% could be described as managers
(either grade I, or describing themselves as a `Manager',
n � 23). Most were under the age of 39 years (n � 207,
Issues and innovations in nursing practice Clinical effectiveness
Ó 1999 Blackwell Science Ltd, Journal of Advanced Nursing, 29(4), 885±893 887
56%), while only seven were above the age of 60 years.
Not surprisingly, therefore, this was re¯ected in the year
of quali®cation. The majority of the group had quali®ed
during the 1980s and 1990s (n � 246, 68%). The sample
was broadly representative of the population under con-
sideration.
2 Level of knowledge of clinical effectivenessand evidence-based practiceIn order to improve the presentation of this data a
subdivision into either a `high level' of knowledge (rated
4 or 5), a low perceived level of knowledge (rated 1 or 2) or
the mid-point (3) was performed. Using this categorization
the results indicated that many of the sample suggested
their level of knowledge to be low with only a small
number rating it to be high (see Figure 1). Overall some
160 subjects (43%) rated their knowledge as low, com-
pared to 83 (22%) rating it as high with 126 (34%) rating
the mid-point. This is supported by the fact that the modal
response for all groups was 1, low level of knowledge.
Figure 1 suggests some difference between the groups in
terms of rated perceived knowledge of clinical effective-
ness. Furthermore, when these data were analysed a
signi®cant association between profession and rated level
of knowledge was revealed (v2 � 17á01, d.f. � 6;
P � 0á009).
A further set of questions referred to individual com-
ponents of evidence-based practice. Thus a series of
questions requested the individuals to rate their level of
skill on a seven-point scale from 1 (`Poor') to 7 (`Best'). The
results of this investigation (see Table 2) revealed the
group scores to range from a low performance on IT skills
(mean � 3á26; SDSD � 1á50) to high perceived skill in
sharing of ideas and information with colleagues (mean-
� 5á42; SDSD � 1á11).
An interesting observation apparent in these ®gures is
that broadly the division is one of technical skills (such as
information technology, computer literature searches and
research skills) being rated the lowest, whereas those
personal or interpersonal skills were rated the highest (e.g.
dissemination of ideas about care to colleagues and
sharing of ideas and information with colleagues).
3 Attitudes towards evidence-based practiceand clinical effectivenessInitially the statements concerning attitudes towards spe-
ci®c elements of clinical effectiveness and evidence-based
practice were examined. For the purposes of presentation
the results have been compressed so that those rating 1 or
2 are collapsed and classi®ed as those that consider
`clinical effectiveness to be a key issue for the NHS'. Those
rating 3 are classi®ed as a mid-point, and those rating 4 or
5 are classi®ed as responding `clinical effectiveness is a
fad'. Figure 2 demonstrates the sample overall, considered
clinical effectiveness to be a key issue for the NHS.
In terms of differences between the professional groups
there appears a more positive attitude for the nurses and
midwifes than for the health visitors and practice nurses,
although this relationship was not statistically signi®cant.
The result of the comparison of the pair of statements
`Evidence-based practice is a waste of time' and `Evi-
dence-based practice is fundamental to my professional
practice' is presented in Figure 3. From the ®gure it is
apparent that the majority of individuals questioned
considered evidence-based practice to be fundamental to
their practice (n � 288, 78%), although there was a
minority (n � 23, 6%) that considered it a waste of time.
There was no signi®cant association between professional
group and rating on this particular statement.
Respondents generally displayed positive attitudes to-
wards evidence-based practice and its key elements.
However, as is to be expected, a number of professionals
considered clinical effectiveness to be a `fad' although it
Figure 1 Level of knowledge of
clinical effectiveness by pro-
fessional group. j � low; h �mid-point; � high.
D. Upton
888 Ó 1999 Blackwell Science Ltd, Journal of Advanced Nursing, 29(4), 885±893
should be noted that this view was in the minority and the
majority considered it to be a worthwhile and fundamen-
tal practice.
4 The application of evidence-based practiceRespondents were requested to rate how often (from Never
to Frequently) they had practised elements of evidence-
based practice in the past year in relation in an individual
patient's care (see Figure 4). Overall, the majority of
respondents stated that they either sometimes or frequently
completed the individual components of evidence-based
practice. The most frequently undertaken element of
evidence-based practice was involving patients fully in
their care. In contrast, the component of critical appraisal
of the literature was less frequently completed.
There was no association between any of these individ-
ual components and professional group.
Another component felt worthy of further investigation
was the extent to which professionals would alter their
practice dependent on where the evidence was derived. In
order to asses this particular issue respondents were asked
to rate the extent to which they would alter their practice,
dependent on a variety of sources of evidence (see
Figure 5).
The majority agreed that they would act on the opinions
of a colleague from the same profession (n � 286, 78%),
or evidence from their own practice (n � 331, 91%).
However, there was less certainty about acting on infor-
mation from the Internet with only 99 (27%) saying that
they would alter practice on the basis of evidence from
this source. It is also of interest to note the few numbers of
individuals that would alter their practice with evidence
presented from colleagues from a different profession
(n � 168, 46%).
Finally, an examination was undertaken to explore how
important the evidence-based practice was in the working
day and any possible barriers that may exist. There was an
overwhelming sense of a workforce which does not have
enough time to ®nd the evidence, that evidence is not
available in some areas and that the demands of the
service and the patients take priority. The responses to
two statement pairs, are presented in Table 3.
Practitioners generally view evidence-based practice as
fundamental to their practice. For example, 80%
(n � 285) considered this to be the case. However, there
is not enough time within the working day for profession-
als to keep up to date with the evidence. For example,
Table 2 Ratings of performance of component skills of evidence-
based practice
Individual component skill Mean SD
IT skills 3á26 1á50
Ability to undertake computer literature
searches
3á83 1á89
Converting your information needs into a
research question
3á48 1á39
Research skills 3á86 1á35
Ability to critically analyse evidence against
set standards
4á16 1á40
Ability to determine how valid the material is 4á20 1á24
Monitoring and reviewing of practice skills 4á29 1á25
Awareness of major information types and
sources
4á40 1á28
Ability to determine how useful the material is 4á46 1á25
Knowledge of how to retrieve evidence 4á57 1á28
Ability to apply information to individual cases 4á83 1á12
Ability to identify gaps in your professional
practice
4á97 1á15
Ability to review your own practice 5á11 1á10
Dissemination of new ideas about care to
colleagues
5á18 1á13
Sharing of ideas and information with
colleagues
5á42 1á11
Figure 2 Attitudes towards
clinical effectiveness by group.
j � CE is a key issue; h �mid-point; � CE is a fad.
Issues and innovations in nursing practice Clinical effectiveness
Ó 1999 Blackwell Science Ltd, Journal of Advanced Nursing, 29(4), 885±893 889
only 30% (n � 110) considered themselves to have
enough time within the day to keep up with the evidence.
When participants were requested to document their
agreement to potential methods for increasing the uptake
of evidence-based practice, one of the major factors was
that of time (see Figure 6). It is interesting to note the rank
order of these factors. Most respondents considered better
dissemination, more time and library resources to be the
key issues with access to the Internet and greater avail-
ability of information technology (IT) resources being the
least required.
Discussion
This study aimed to survey and describe the knowledge
and attitudes of nurses, midwives and health visitors
towards evidence-based practice and clinical effective-
ness. To summarize, the study has indicated that in a
broadly representative sample a positive attitude towards
the concept of evidence-based practice and clinical effec-
tiveness exists. However, the self-rated level of knowledge
of clinical effectiveness was low, as was knowledge of
some of the components of evidence-based practice and
this was most apparent in the technical skills associated
with the concept. Furthermore, most individuals felt that
although they were frequently applying evidence-based
practice principles, a greater take-up of these was being
hampered by an excessive workload.
In terms of the sample, the response rate was extremely
good given the pressures that confront the groups being
asked to participate in the survey, and compare extremely
favourably to other reports. For example a response rate of
only 29% was reported by Marsh & Brown (1992) and 36%
by McSherry (1997). It is, of course, important to note that
the survey was completed in Wales which has had a
Clinical Effectiveness Initiative since 1994/5 and therefore
generalization to the rest of the United Kingdom needs to
be explored further.
The ®rst issue to highlight is the relatively low level of
perceived knowledge of the concept of clinical effective-
Figure 3 Respondent's value of
evidence-based practice. j �EBP is fundamental; h � mid-
point; � EBP is a waste of
time.
Figure 4 Practice of individual components of EBP. j � never; h � rarely; � sometimes; � frequently.
D. Upton
890 Ó 1999 Blackwell Science Ltd, Journal of Advanced Nursing, 29(4), 885±893
ness across the sample. On one hand this may be viewed
as rather dispiriting, especially given the Initiative in
Wales. However, this should not be viewed in isolation;
rather, the results concerning the actual application of
evidence-based practice should also be considered. These
indicated that the application of evidence-based practice
was relatively high. It may be that individuals are indeed
applying evidence-based practice principles, but are not
actually calling it this, either because they do not know
the term or because the information has become second
nature and part of normal everyday practice. Taken
overall, the results are indicative of a positive uptake of
evidence-based practice although there are certainly areas
of de®ciency that need to be addressed.
Primarily, the majority of these shortcomings could be
classi®ed as the technical, research-based skills. From the
information presented it would appear that nurses, mid-
wives and health visitors consider themselves to be adept
at the interpersonal skills but consider themselves lacking
in other more technical areas. Although no more than
speculation on the basis of the current results it would
appear that the move towards a research-minded profes-
sion still has some way to go as far as nurses, midwives
and health visitors are concerned. Certainly, this sugges-
tion would be supported by the results of other, more
speci®c, investigations and reports (e.g. Meah et al. 1996,
Kitson 1997a, McSherry 1997, Walsh 1997). The accessi-
bility (both in terms of physical location and user friend-
liness) of the research may be an area that warrants further
study, although there appears to have been little progress
since the initial highlighting of this as an issue (Hicks
1992, 1993, Meah et al. 1996).
The sample appeared to have a positive attitude towards
evidence-based practice. The majority considered it a key
issue for the NHS. This is obviously heartening and
suggest that the will of the clinical practitioners is behind
clinical effectiveness. Appleby et al. (1995) argued that
there is a need for a fundamental shift in the attitudes and
thinking of clinicians in order to introduce a clinical
effectiveness ethos within the NHS. From the results
presented here it would appear as if this culture shift has,
indeed, started. Consequently it may be concluded that, at
least from a nursing perspective, the attitude of profes-
sionals is not a barrier to successful implementation of a
clinical effectiveness culture. These barriers may be more
likely to be related to the infrastructure or organization in
which nurses, midwives and health visitors work Ð
again, issues highlighted recently (Kitson 1997b).
Although there is a positive attitude towards clinical
effectiveness there still remains a major barrier Ð that of a
lack of time. This barrier identi®ed by the respondents is not
altogether surprising in that other researchers have certain-
ly commented that `. . . today's NHS is complex, dynamic
and very busy. New demands, methods and services are
emerging all the time and views changing on when and for
whom a particular procedure should be used. Professional
Figure 5 Willingness to act on evidence from variety of sources. j � would act; h � uncertain; � would not act.
Table 3 Number of responses to statements concerning whether evidence-based practice is fundamental and whether it is a priority in
the working day
Midpoint
Evidence-based practice is fundamental to
professional practice
285
(80%)
52
(14%)
23
(6%)
Evidence-based practice is a waste of time
New evidence is so important that I make
the time in my work schedule
110
(31%)
102
(28%)
148
(41%)
My workload is too great for me to keep up to
date with all the new evidence
Issues and innovations in nursing practice Clinical effectiveness
Ó 1999 Blackwell Science Ltd, Journal of Advanced Nursing, 29(4), 885±893 891
staff are under pressure to keep up with innovations and
with the workload' (Welsh Of®ce 1996b p. 3).
On the basis of the results presented here there are two
possible rami®cations. First, the introduction of evidence-
based practice may prove problematic because of the
heavy workload. A reduction in workload, and less
emphasis on throughput, may result in both the ethos,
and application of evidence-based practice becoming
more of a reality. The likelihood of a reduction in
workload (and its concomitant increase in the necessary
resources) occurring within the near future is remote. It
would, obviously, be of concern if a practice aimed at
improving patient care (which ultimately could result in
the reduction in workload due to the removal of ineffec-
tive or detrimental practices) is unable to be implemented
because of the current workload pressures. Therefore, a
review of methods that could result in a greater uptake of
an evidence-based culture without an excessive increase
in workload needs to be undertaken.
For example, the better and quicker dissemination of
proven improvements in practice, although ensuring that
this does not include questionable material (Appleby
et al. 1995, Naylor 1995). Whether this be via the new
technologies (given the results presented on views on
evidence from the Internet this may not be totally appro-
priate) or the more traditional manner of word of mouth or
expert demonstration is a matter of debate. Furthermore,
since the evidence presented suggests practice is more
likely to alter on the basis of evidence from a colleague
from the same profession rather than one from a different
profession then there is a need for more focused nursing/
midwifery evidence being presented to nurses, midwives
and health visitors by members of their own profession,
although the evidence that midwives undervalue research
they believe to have been undertaken by a member of their
own profession (Hicks 1992) needs to be taken into
account.
Another issue is the extent of the information currently
available for utilization by nurses, midwives and health
visitors. Estimates suggest that there is still an emphasis
on the medical profession with only 15% of clinical
effectiveness information relating to nursing, compared to
79% for medicine (Appelby et al. 1995). The dual prob-
lems of lack of information and the dif®culty in accessing
that which is available makes the challenges facing
professionals charged with implementation of evidence-
based practice considerable. It has to be recognized that
individual nurses, midwives and health visitors may ®nd
it problematic to undertake all the elements outlined as
essential for evidence-based practice (e.g. Sackett et al.
1997). Certainly, given the lack of perceived research
skills, the over-work and the low level of research-based
practice, then it may be that greater dissemination of key
principles needs to be considered. The results presented
reinforce the notion that better dissemination would assist
the implementation of evidence-based practice.
Study limitationsThis study is no different from any other research in
having its methodological de®cits. First, the questionnaire
designed was particularly lengthy and this probably ran to
excess which may have led to a lower response rate than
possible. Furthermore, some of the respondents may have
adopted a socially desirable position. Consequently, there
is a need for further studies that can take a more in-depth
and investigative approach to some of the queries. The
de®ciencies inherent in postal surveys should be also
noted. For example, the questionnaires may not have been
completed by the speci®ed recipient. Furthermore, the
questionnaire dealt with perceptions of knowledge and
practice. There is an obvious need for studies of actual
practice and knowledge. Finally, the sampling technique
could have led to bias in that some of the selected units
could have had a particular focus on evidence-based
Figure 6 Level of agreement with statement that `Evidence-based practice would increase if the following were in place'. j � agree;
h � uncertain; � disagree.
D. Upton
892 Ó 1999 Blackwell Science Ltd, Journal of Advanced Nursing, 29(4), 885±893
practice. However, it was hoped with a random selection
that any bias would be minimized and the sample be
representative of the total population in terms of their
experience and education concerning evidence-based
practice Ð it was felt that this was, indeed, the case.
CONCLUSION
With the above caveats in mind the study has presented a
broad picture of the current levels of knowledge and
opinions on clinical effectiveness and evidence-based
medicine. While not all the aspects considered can be
reported as being in a positive state and there are certainly
challenges ahead, it is apparent that the overwhelming
majority of nurses, midwives and health visitors have a
favourable attitude towards clinical effectiveness and
evidence-based practice and despite their heavy workload
are attempting to implement such practices for the good of
their patients and clients.
Acknowledgements
This research was completed with funding provided by
the Welsh Of®ce, under the guidance of the Clinical
Effectiveness Group/Outcomes Group and Clinical Effec-
tiveness Support Unit (Wales). Thanks must be extended
to members of the Research Steering Group for their
considerable contribution to the successful completion of
the study: Ms Noreen Edwards (Vice Chair of the Council
for Professions Supplementary to Medicine), Dr Ruth Hall
(Director of Public Health, North Wales), Professor Thelma
Parry (Dean of Academic Affairs, University of Wales
Institute, Cardiff), Mrs Yvonne Peters (Director of Nursing
and Quality, Llandough NHS Hospital Trust), Dr Simon
Smail (Sub-dean of Post-Graduate Medicine, University of
Wales College of Medicine), Professor Nigel Stott (Head of
Department of General Practice, University of Wales
College of Medicine), Professor Morton Warner (Director
of Welsh Institute of Health and Social Care) and Mr
Sandy Yule (Head of Radiography. University Hospital of
Wales, NHS Trust). The assistance of Mrs Penney Upton
and Miss Brynda Lewis with the completion of the study
must be acknowledged.
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