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Figure 3 Nomogram for the proposed prediction rule for post-coronary artery bypass graft (CABG) atrial fibrillation/atrial flutter (AF). Point scores are computed by adding one point for each year of age, 12 points for prior history of AF, 3 points for P-wave duration >110 ms, and 10 points for low cardiac output. For any point score on the scale above the line, one can read the corresponding estimated probability of AF on the scale below the line.
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