Table 4.

Summary of risk category reclassification of MESA participants with the addition of common carotid mean far wall intima-media thickness (IMT) to the Framingham risk factors^*, sex, and race/ethnicity

		RISK FACTORS WITH FAR WALL IMT ADDED
R		< 6 %	6–20 %	> 20 %	Total
I	< 6 %	91	20	0	111
S	6 – 20%	10	292	16	318
K	> 20 %	0	12	43	55
F	Total Events	101	324	59	484
A
C	< 6 %	3170	153	0	3323
T	6 – 20%	233	2297	66	2,596
O	> 20 %	0	43	160	203
R
S	Total Non-Events	3,403	2493	226	6122

^*age, total-cholesterol, HDL-cholesterol, systolic blood pressure, smoking, and diabetes.

The top half of the table shows an increase in participants “up” classified to a higher risk category to be 14/484 (2.9%). The bottom half of the table represents the non-events with 57 individuals “down” classified (0.93%). The net reclassification improvement is 3.8 % (0.93% + 2.9 %)