. Author manuscript; available in PMC: 2016 Jan 31.

Published in final edited form as: Circ Arrhythm Electrophysiol. 2015 Jan 7;8(1):25–31. doi: 10.1161/CIRCEP.114.002300

Table 4.

Simple risk score for the prediction of post-operative atrial fibrillation

	Discovery cohort (N=556)		Validation cohort (N=1164)
Score	Number of patients with score	Incidence of PoAF	Number of patients with score	Incidence of PoAF
0-1	66	7.6%	130	8.5%
2	100	12%	195	19.5%
3	113	19.5%	243	28.4%
4	125	34.4%	322	33.2%
5	83	44.6%	186	39.8%
≥6	69	66.7%	88	42%

PoAF: postoperative atrial fibrillation. Calculation of score: 1 point each for male sex, hypertension, diabetes mellitus, left ventricular ejection fraction < 40%, and PR interval >200ms; 2 points for age >60 years; and 3 points for a previous history of atrial fibrillation.