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. 2015 Sep 16;8:395–403. doi: 10.2147/MDER.S92070

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© 2015 Cher and Reckling. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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Baseline EQ-5D as a function of baseline ODI scores by trial.

Notes: SIJ trials are shown in green; SPORT trials are shown in blue. Individual patient scores are plotted as points and jittered slightly. Ribbons show family-wise 95% confidence limits (using geom_smooth from ggplot2). Gray line and bars show normal population median (82) and interquartile ranges (80–100).

Abbreviations: DS, degenerative spondylolisthesis; IDH, intervertebral disc herniation; INSITE, Investigation of Sacroiliac Fusion Treatment; ODI, Oswestry Disability Index; SIFI, Sacroiliac Joint Fusion with iFuse Implant System^®; SPORT, Spine Patient Outcomes Research Trial; SIJ, sacroiliac joint; SPS, spinal stenosis; TTO, time-trade off.