Table 4.

Factors associated with the use or nonuse of antithrombotic drugs^a

Variable	Odds ratios (95% CI)b		p value
History of AF	3.4	(1.74–6.65)	0.0004
History of valvular heart disease	15.1	(1.62–141.1)	0.02
History of venous thrombo-embolism	4.2	(1.07–16.4)	0.04
Risk of bleeding scorec	0.68	(0.44–1.05)	0.08
Risk of thrombo-embolism scorec	1.58	(1.16–2.13)	0.003
Ischemic infarctd	0.32	(0.14–0.74)	0.008

^a Note: Multivariate model

^bOdds ratio >1, more likely to be using any antithrobotic

^cper increase in one risk factor

^dDuring index admission