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. 2014 Dec 4;9(12):e114468. doi: 10.1371/journal.pone.0114468

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© 2014 Froud, Abel

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The figure shows ROC curves constructed using real trial data. Panel 3a shows the Roland Morris Disability Questionnaire changes in the Best Care arm of the UK BEAM trial, at one year. The three estimators choose different points (Farrar = red, EMGO = blue, and sums of squares = green). Panel 3b shows the modified von Korff disability changes across all four arms of the trial, at three months. Panel 3c shows modified von Korff disability data from the Best Care arm at three months. Panel 3d shows modified von Korff disability data from all four trial arms at one-year.