Table 2.

Multiple logistic regression analysis of clinical factors predictive of post-CS AF. Post-CS period studied, for AF, or initiation or withdrawal of β-blockers =3 days. bpm, beats per minute; CI, confidence intervals; left ventricular systolic dysfunction (LVSD): yes includes mild, moderate and severe LVSD. Number of patients with post-CS AF=27/164. Asterisk=P<0.05. In addition to the covariates listed, the multiple regression model included the covariates listed in Table 4.

Clinical factor	Level	Odds ratio (95% CI)	P
Gender	Male vs female	0.50 (0.21,1.20)	0.12
Age	5 years	1.41 (1.11,1.80)	0.005
Heart rate	10 bpm	1.11 (0.84,1.46)	0.48
Pre-CS β-blocker	Yes vs no	0.50 (0.21,1.16)	0.11
Post-CS β-blocker initiation	Yes vs no	1.72 (0.17,17.2)	0.65
Post-CS β-blocker withdrawal	Yes vs no	0.72 (0.31,1.66)	0.44
Pre-CS ACE inhibitor	Yes vs no	0.55 (0.23,1.28)	0.16
Valve surgery	Yes vs no	1.67 (0.60,4.65)	0.33
Hypertension	Yes vs no	0.47 (0.20,1.11)	0.08
LVSD	Yes vs no	0.73 (0.31,1.72)	0.47