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. 2013 Dec 19;2(6):e000505. doi: 10.1161/JAHA.113.000505

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© 2013 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley Blackwell.

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Figure 3. — Cardiac catheterization referral rates after normal exercise ECHO or MPI results. Note: Lower 95% confidence intervals for some studies intersect zero. Area of each square corresponds to weight of the study in meta‐analysis. CI indicates confidence interval; ECHO, echocardiography; MPI, myocardial perfusion imaging.