Responsiveness of general health status in chronic low back pain: A comparison of the COOP charts and the SF-36
Bronfort, Gert; Bouter, Lex M.
Compared the responsiveness and assessed the concurrent validity of the Dartmouth Cooperative Chart System (COOP) and the Health Status Survey Short Form (J. E. Ware and C. D. Shelbourne, 1992) (SF-36) in patients with chronic low back pain (CLBP). 129 patients (aged 20-60 yrs) underwent spinal manipulative therapy combined with exercise and medication. External criteria for distinguishing Ss with minimally clinically important improvements from those not improving were S-rated low-back pain severity and disability as measured by the Roland-Morris Low-back Disability Index (M. Roland and R. Morris, 1983). Results show that both COOP and SF-36 had sufficient and very similar responsiveness. The constructs of functional health status, as reflected in the global scores of the 2 tests, were highly correlated; 6 of the 9 dimensions were moderately to highly correlated and the overall canonical correlation was high. It is concluded that both instruments are equally suitable for use as outcome measures in clinical trials on CLBP. COOP charts take less time to complete and score. (PsycINFO Database Record (c) 2012 APA, all rights reserved).