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?

MLA

Trampisch Hans J, et al. “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?” BMC Medical Research Methodology, vol. 7, no. 1, Nov. 2007, p. 50. EBSCOhost, https://doi.org/10.1186/1471-2288-7-50.

APA

Trampisch Hans J, Schaub Claudia, Maier Christoph, Lange Stefan, Lungenhausen Margitta, & Endres Heinz G. (2007). 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? BMC Medical Research Methodology, 7(1), 50. https://doi.org/10.1186/1471-2288-7-50

Chicago

Trampisch Hans J, Schaub Claudia, Maier Christoph, Lange Stefan, Lungenhausen Margitta, and Endres Heinz G. 2007. “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?” BMC Medical Research Methodology 7 (1): 50. doi:10.1186/1471-2288-7-50.