Table 3.

In-Hospital Treatment Practices and Discharge Prescription According to Atrial Fibrillation (AF) Status

Treatment	New-Onset AF (n=3112)	P Value (New vs. No)	Pre-existing AF (n=4494)	P Value (Pre vs. No)	No AF (n=51,426)	P Value (New vs. Pre)
In-Hospital Medications
Aspirin	2902 (93.3%)	0.05	3849 (86.0%)	<0.001	48377 (94.2%)	<0.001
Beta-blocker	2458 (79.5%)	<0.001	3390 (76.0%)	<0.001	43808 (85.7%)	<0.001
ACE inhibitor	2207 (71.6%)	<0.001	2837 (63.7%)	0.0024	33672 (65.9%)	<0.001
Statin	1905 (61.8%)	<0.001	2645 (59.3%)	<0.001	36270 (80.0%)	0.031
Clopidogrel	1074 (52.6%)	<0.001	1300 (43.4%)	<0.001	21371 (61.1%)	<0.001
Amiodarone	1554 (50.5%)	<0.001	1067 (24.1%)	<0.001	2318 (4.6%)	<0.001
Low molecular weight heparin	1870 (60.9%)	0.43	2402 (54.1%)	<0.001	30614 (60.2%)	<0.001
Unfractionated heparin	1746 (56.9%)	<0.001	1834 (41.4%)	<0.001	23248 (45.8%)	<0.001
Warfarin	556 (18.2%)	<0.001	1317 (29.7%)	<0.001	1768 (3.5%)	<0.001
GpIIbIIIa Inhibitor	845 (27.6%)	0.65	728 (16.4%)	<0.001	14185 (27.9%)	<0.001
Procedures
PCI	1011 (32.6%)	<0.001	1010 (22.6%)	<0.001	21036 (41.2%)	<0.001
Thrombolytics	460 (15.0%)	0.0499	229 (5.2%)	<0.001	6985 (13.7%)	<0.001
CABG	587 (19.0%)	<0.001	133 (3.0%)	<0.001	2306 (4.5%)	<0.001
IABP	337 (11.1%)	<0.001	80 (1.8%)	0.03	1173 (2.3%)	<0.001
Permanent Pacemaker	343 (11.3%)	<0.001	200 (4.5%)	<0.001	1250 (2.5%)	<0.001
Discharge Prescription
Aspirin	2121 (87.4%)	<0.001	2897 (79.7%)	<0.001	40338 (92.1%)	<0.001
Beta-blocker	1725 (71.3%)	<0.001	2593 (71.4%)	<0.001	35180 (80.6%)	0.93
ACE inhibitor	1565 (65.0%)	0.14	2235 (61.7%)	0.03	27675 (63.5%)	0.01
Statin	1529 (63.3%)	<0.001	2268 (62.6%)	<0.001	32221 (73.9%)	0.57
Clopidogrel	649 (40.9%)	<0.001	893 (36.7%)	<0.001	16659 (56.1%)	0.008
Warfarin	476 (20.0%)	<0.001	1254 (34.7%)	<0.001	1632 (3.8%)	<0.001

ACE = Angiotensin converting enzyme; PCI = Percutaneous intervention; CABG = coronary artery bypass surgery; IABP = intraaortic balloon pump