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ISRCTN
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ISRCTN70945668
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ClinicalTrials.gov identifier
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Public title
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Validation of weak magnets as a credible placebo in trials of magnetic therapies
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Scientific title
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Acronym
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N/A
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Serial number at source
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N0100168711
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Study hypothesis
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1. To determine whether magnetic bracelets of 50mT field strength (at the ventral wrist-facing surface) are sufficiently convincing placebos for use in future trials of magnetic bracelets. The null hypothesis is that the proportion of people believing a bracelet is magnetic will be the same for people given (and allowed to test) 50mT and 180mT bracelets.
2. A secondary hypothesis relates to the difference in strength of belief that each type of bracelet may be therapeutic in relieving osteoarthritis pain.
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Ethics approval
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Added 21 July 2008: the study protocol and procedures were submitted to N&E Devon NHS Research Ethics Committee who considered that, as study design work conducted outside any NHS setting, the study did not require formal Committee approval.
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Study design
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Randomised controlled trial
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Countries of recruitment
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United Kingdom
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Disease/condition/study domain
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Musculoskeletal Diseases
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Participants - inclusion criteria
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108 osteoarthritis patients who do not currently use magnetic bracelet therapy.
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Participants - exclusion criteria
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Not provided at time of registration
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Anticipated start date
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01/10/2005
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Anticipated end date
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01/06/2006
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Status of trial
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Completed
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Patient information material
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Not available in web format, please use the contact details below to request a patient information sheet
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Target number of participants
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108
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Interventions
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Randomised controlled trial, comparing belief in magnetic status between 2 groups.
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Primary outcome measure(s)
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Added 21 July 2008:
Based on the magnet assigned to the participant, responses to the question "Which kind of magnet do you think you have been given?" [Active /Inactive /Don’t know].
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Secondary outcome measure(s)
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Added 21 July 2008:
Based on the magnet assigned to the participant, responses to the question “How convinced are you that wearing this bracelet on your wrist for 3 months would help to relieve pain in your joints?” [visual analogue scale from 0=Not at all to 10 = Totally convinced].
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Sources of funding
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Mid Devon Primary Care Trust & Mid Devon Research Group (UK)
NHS R&D Support Funding
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Trial website
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Publications
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2008 results in http://www.ncbi.nlm.nih.gov/pubmed/18534331
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Contact name
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Dr
Colin
Greaves
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Address
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Wyndham House Surgery
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City/town
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Silverton
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Zip/Postcode
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EX5 4HZ
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Country
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United Kingdom
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Tel
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+44 01392 860034
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Fax
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+44
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Email
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c.j.greaves@exeter.ac.uk
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Sponsor
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Record Provided by the NHSTCT Register - 2006 Update - Department of Health
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Address
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The Department of Health, Richmond House, 79 Whitehall
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City/town
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London
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Zip/Postcode
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SW1A 2NL
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Country
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United Kingdom
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Tel
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+44 (0)20 7307 2622
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Email
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dhmail@doh.gsi.org.uk
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Sponsor website:
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http://www.dh.gov.uk/Home/fs/en
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Date applied
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29/09/2006
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Last edited
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21/07/2008
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Date ISRCTN assigned
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29/09/2006
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