Table 1

Demographics and risk factors
Characteristic AS = 0 (n = 3299) AS > 0 (n = 3269)
SWCS 0–0.78 <50% tile (n = 1649) SWCS 0.78-284.48 >50%tile (n = 1650) P* All

SWCS

0.22-4262.70

Age (year) 57.88 58.06 0.56 57.97 66.40
Male Sex (%) 30.38% (501) 42.73% (705) <0.001 36.56% (1206) 57.63% (1884)
Hypertension (%) 30.38% (501) 40.24% (664) <0.001 35.31% (1165) 54.70% (1788)
Treated Diabetes (%) 4.44% (73) 10.23% (168) <0.001 7.33% (241) 12.83% (418)
Current Smoker (%) 14.20% (233) 12.78% (210) 0.25 13.49% (443) 12.84% (419)
Framingham 10-yr Risk (Mean [SD]) 0.080 (0.062) 0.102 (0.073) <0.001 0.083 (0.063) 0.137 (0.094)

P-value is for difference between SWCS <50th percentile and SWCS >50th percentile. Calculated using t-test for age, and chi-squared tests for other characteristics. Framingham 10-yr Risk calculated using Circulation 1998 method.

Liang et al.

Liang et al. BMC Medical Imaging 2012 12:14   doi:10.1186/1471-2342-12-14

Open Data