Figure 1.

Diagnostic Group Classification According to the ACC/AHA, ESC, and NICE Guidelines

The American College of Cardiology/American Heart Association (ACC/AHA), European Society of Cardiology (ESC), and National Institute of Health and Care Excellence (NICE) guidelines are pink, green, and blue, respectively. (A) Proportion of study population classified as low risk. (B) Overlap of diagnostic groups. Within this Euler diagram, the area of each shaded circle represents the proportion of patients classified into the low- and high-risk groups in the left- and right-hand panels, respectively. The combined area of circles of the same color represents the entire analysis population and is the same for all 3 colors corresponding to all 3 guidelines. Overlapping areas correspond to individual patients who fulfill the criteria for low or high risk according to more than 1 guideline. PROMISE = Prospective Multicenter Imaging Study for Evaluation of Chest Pain; SCOT-HEART = Scottish Computed Tomography of the Heart.