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Challenges in measuring patient defined outcomes in diagnostic radiological
investigations
S Mathers*+, G McKenzie*, E Robertson*, J Proctor*+, R Chesson+
*NHS Grampian +The Health Services Research GroupAberdeen, Scotland, UK.
What aspects of health care can be evaluated?
Outcome
Change due to intervention
Process
Intervention e.g.surgery, procedure
Structure
Resources, facilitiesorganisational settings
Donabedian, 1980
Outcome measures
have been defined
‘... as the results (effects) of processes. They are
that part of the situation pertaining after a process
which can be attributed to the process.’
UK Clearing House on Health Outcomes, 1993
Why is outcome measurement important?
‘ ... to show that an intervention has been
appropriate and effective’
Austin and Clark, 1993
Aim
To carry out a systematic review of literature to
identify:
• the prevalence, • use of outcome measures in radiology.
Search Strategy
▼
Databases searched
▼
Abstracts read according to defined criteria
▼
Criteria redefined, abstracts to be re-read in light of this
▼
Articles to be retrieved
▼
Initial paper review
▼
Data synthesis1. Data extraction form
2. Quality checklist
▼
Data analysis1.SPSS
2. Summary tables3. Meta-analysis
▼
Write up and dissemination.
Modified from NHS Centre for Reviews and Dissemination, (UK)
• 46 key words used
radiology/diagnostic imaging/x-ray
outcomes patient satisfactionefficacy outcome measuresutility adverse reactionwaiting times quality of care
• Databases searched e.g. MEDLINE
Results
• Citations 4893
• Publications retrieved 84• Publication by references 25
• Patient focused outcome 22
Final Scrutiny
Exclude• 8 for a number of reasons
e.g. hypothetical studies
Included• 14 primary patient focused studies
Patient focused outcome papers
In total 8
• Mammography 2 x USA• Low back pain 2 x UK• Ankle radiography 1 Canada• DCBE/US/Mammography 1 Norway• MRI 1 UK• Effects of radiation dose 1 Canada
Conclusions
• Dearth of research into patient centred outcomes in radiology
• Lack of coherent body of work
• Demonstrates little patient involvement in radiology research
Challenges
• Imaging procedure only part of investigations and patient final outcome remote from department Blackmore et al 1999
• Multi-disciplinary approach to research Revicki et al 1999
• Development of suitable outcome measurement tools
• Would benefit from a qualitative methodology
Future agenda
• It is important that we develop a culture of outcome measurement in radiology
• Patient defined outcome is necessary to evaluate our procedures
Acknowledgements
The Royal College of Radiologists (UK)
(Pump Priming Research Award)