Discrepancies between patients' assessments of outcome: qualitative study nested within a randomised controlled trial

A randomised controlled trial to test the effectiveness of a package of physiotherapy treatment (nine treatment sessions involving patellar taping, seven different exercises, correction of posture, and advice on footwear) for patello-femoral osteoarthritis, which included a nested qualitative study...

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Bibliographic Details
Published in:BMJ 2003-02, Vol.326 (7383), p.252-253
Main Authors: Campbell, Rona, Quilty, Brian, Dieppe, Paul
Format: Article
Language:English
Subjects:
Arthritis
Assessment
Biological and medical sciences
Clinical trials
Disabilities
Diseases of the osteoarticular system
Exercise Therapy - standards
Experimentation
Health care outcome assessment
Health outcomes
Humans
Interviews
Knees
Medical research
Medical sciences
Osteoarthritis
Osteoarthritis, Knee - rehabilitation
Outcomes
Pain
Pain - prevention & control
Patient Satisfaction
Patients
Physical therapy
Physical Therapy Modalities - standards
Physiotherapy
Psychology. Psychoanalysis. Psychiatry
Psychometrics. Diagnostic aid systems
Psychopathology. Psychiatry
Qualitative research
Questionnaires
Randomized controlled trials
Research grants
Surveys and Questionnaires
Techniques and methods
Treatment Outcome
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Summary:A randomised controlled trial to test the effectiveness of a package of physiotherapy treatment (nine treatment sessions involving patellar taping, seven different exercises, correction of posture, and advice on footwear) for patello-femoral osteoarthritis, which included a nested qualitative study of 20 participants randomised to the intervention arm, provided an opportunity to compare the two approaches to collecting outcome data: quantitatively by questionnaire and qualitatively by means of in-depth interview. 3 4 Participants, methods, and results The primary outcome measure was pain in the worse knee, recorded on a 10 cm visual analogue scale in the presence of BQ. The most likely explanation comes from the context in which data were collected: the quantitative information was obtained in the trial clinic in the presence of a doctor, whereas the qualitative accounts were obtained by an independent interviewer (who was not a healthcare professional) in the patient's home.
ISSN:0959-8138
0959-8146
0959-535X
1468-5833
1756-1833
DOI:10.1136/bmj.326.7383.252