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Main
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Note: This record shows only 22 elements of the WHO Trial Registration Data Set. To view changes that have been made to the source record, or for additional information about this trial, click on the URL below to go to the source record in the primary register. |
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Register:
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ISRCTN |
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Last refreshed on:
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13 January 2015 |
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Main ID: |
ISRCTN17934656 |
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Date of registration:
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23/01/2004 |
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Prospective Registration:
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No |
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Primary sponsor: |
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Public title:
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An evaluation of general practitioners' use of magnetic resonance imaging (MRI)
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Scientific title:
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Date of first enrolment:
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01/04/1995 |
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Target sample size:
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150 |
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Recruitment status: |
Completed |
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URL:
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http://isrctn.com/ISRCTN17934656 |
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Study type:
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Interventional |
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Study design:
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Randomised controlled trial (Screening)
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Phase:
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Countries of recruitment
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United Kingdom
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Contacts
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Name:
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Address:
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Telephone:
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Email:
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Affiliation:
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Name:
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Helen
Houston |
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Address:
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Department of General Practice
Llanedeyrn Health Centre
CF23 9PN
Cardiff
United Kingdom |
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Telephone:
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+44 (0)129 20 541 133 |
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Email:
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Houston@cardiff.ac.uk |
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Affiliation:
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Key inclusion & exclusion criteria
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Inclusion criteria: 150 general practitioners in 39 practices
Exclusion criteria: No exclusion criteria
Age minimum:
Age maximum:
Gender:
Not Specified
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Health Condition(s) or Problem(s) studied
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GPs' use of MRI scans
Not Applicable
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Intervention(s)
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Face to face qualitative interviews were conducted with a sample of general practitioners. Data from the interviews were used by a panel of doctors from primary and secondary care to develop guidelines for the appropriate referral of patients for MRI of the knee and of the lumbar spine.
General practices were randomised to access MRI by telephone or letter. Referrals were judged by the panel (blind) for appropriateness with the guidelines as criteria. A difference in the proportion of appropriate scan requests before telephone and written access groups was assessed using the chi-square test. Costs of method of access were determined.
GP knowledge was assessed immediately before and three months after the intervention by postal questionnaire. Telephone interviews with GPs for all subsequent scan requests provided data on which the panel (again blind) assessed against the guideline criteria. The association between practice, patient and randomisation variables with concordance was assessed using stepwise logistic regression. Clustering effects were accounted for by multi-level modelling. The cost of each intervention was measured.
Practices were randomised to receive:
a. Educational seminar
b. Audit feedback
c. Seminar and audit feedback
d. None
All four groups received guidelines.
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Primary Outcome(s)
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1. Consensus guidelines produced, feedback from GPs
2. Concordance of requests with guidelines
3. Knowledge of indications and contraindications for MRI
4. Cost of method of access
5. Cost of implementation strategy
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Secondary Outcome(s)
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No secondary outcome measures
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Source(s) of Monetary Support
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NHS Primary and Secondary Care Interface National Research and Development Programme (UK)
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Results
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Results available:
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Date Posted:
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Date Completed:
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URL:
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