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Randomised controlled comparison of the Health Survey Short Form (SF-12) and the Graded Chronic Pain Scale (GCPS) in telephone interviews versus self-administered questionnaires. Are the results equivalent?
Lungenhausen M, Lange S, Maier C, Schaub C, Trampisch HJ, Endres HG. Lungenhausen M, et al. Among authors: maier c. BMC Med Res Methodol. 2007 Nov 22;7:50. doi: 10.1186/1471-2288-7-50. BMC Med Res Methodol. 2007. PMID: 18034900 Free PMC article. Clinical Trial.
1,267 results