Table 2. Incidence ratio of Postoperative atrial fibrillation.

			Treatment			Total
			BB	BB+Amiodaron	BB+Statin
POAF	No	n	55	66	53	174
		%	68.75	82.50	66.25	72.50
	Yes	n	25	14	27	66
		%	31.25	17.50	33.75	27.50
Total		n	80	80	80	240
		%	100	100	100	100

n-absolute number and percentage. POAF-Postoperative atrial fibrillation; BB-beta blocker; BB+Amiodaron; BB+Statin. Pearson Chi-square χ²=6.14, df-2, p=0.046, Cramer's V 0.16. Fisher's 0.040.