Table 1

Characteristics of Patients with AF classified based on Warfarin Use

Characteristics
Received Warfarin n = 199
Did Not Receive Warfarin n = 165
p value

Age, years, mean
76.3 ± 11.3
81.3 ± 10.3
< 0.001*
Age 75 ≥ y, n (%)
125 (62.8)
134 (81.2)
< 0.001*
AA Race, n (%)
74 (37.2)
82 (49.7)
0.016*
Women, n (%)
76 (38.2)
79 (47.9)
0.063
CAD, n (%)
92 (46.2)
87 (52.7)
0.217
Mean CHADS2 Score ± S.D
2.8 ± 1.3
3.2 ± 1.3
0.004*
CHADS2 Score- 3 or greater (%)
111 (56)
116 (70)
0.004*
Chads2 Score



No. of points, n (%)



0
3 (1.5)
2 (1)

1
22 (11)
12 (7)

2
63 (32)
35 (21)

3
59 (30)
58 (35)

4
32 (16)
28 (17)

5
15 (7.5)
22 (14)

6
5 (2.5)
8 (5)

Heart Failure, n (%)
120 (60.3)
103 (62.4)
0.679
Diabetes, n (%)
68 (34.2)
66 (40.0)
0.251
Hypertension, n (%)
179 (90.0)
149 (90.3)
0.911
Prior Stroke, n (%)
47 (23.6)
43 (26.1)
0.591

Abbreviations: AA- African American, CAD- Coronary Artery Disease, CHADS2- C-cardiac failure, H-hypertension, A-age > 75 years, D- diabetes mellitus, S- stroke, S.D- Standard deviation

*Statistically significant, p < 0.05

Srivastava et al. Thrombosis Journal 2008 6:6   doi:10.1186/1477-9560-6-6