Fig. 3From: Systematic reviews of prognosis studies: a critical appraisal of five core clinical journalsTemporal trend of prognostic systematic reviews as a percentage of total published systematic reviews. The figure shows the temporal trend of prognostic systematic reviews expressed as percentage of all systematic reviews published in Annals of Internal Medicine, BMJ Circulation, JAMA, and Stroke from 2000 to 2012Back to article page