Figure 1.

Risk rating among patients who stopped aspirin (total sample)

Rating of the risk associated with aspirin therapy cessation (numeric rating scale from 1–10): ratings by patients (y-axis) and by treating physicians (x-axis). Valid risk ratings among patients who stopped aspirin therapy preoperatively are depicted. The area of the diagram points represents the relative frequency of a data pair. In the center, a concordance zone is shown (grey area in which the physician and patient ratings differ = 2 points from each other). In the areas outside of the concordance zone, patient ratings are considerably above (percentage top left) or below (percentage bottom right) the physician ratings (difference at least 3 points). Intraclass correlation (ICC) is used to quantify the concordance between patient and physician ratings (value at the center of the concordance zone). An ICC <0.4 indicates low agreement between the respective ratings (30). Aspirin, acetylsalicylic acid