Table 5. Odd-ratios for the presence of multiple vulnerable plaque characteristics in relation to stroke risk (upper versus lower quartile) for patients operated ≤ 30 days and > 30 days of last event.

CEA ≤ 30 DAYS FROM EVENT	1 year stroke risk			5 year stroke risk
(n=553)	OR	95% CI	P-value	OR	95% CI	P-value
0 vulnerable plaque features	1.00			1.00
1 vulnerable plaque feature	2.79	0.74-10.60	0.13	3.06	0.71-13.21	0.13
2 vulnerable plaque features	2.28	0.75-6.89	0.15	2.27	0.72-7.18	0.16
3 vulnerable plaque features	3.60	1.21-10.69	0.02	3.13	1.04-9.45	0.04
≥4 vulnerable plaque features	5.71	1.80-18.13	0.003	4.31	1.39-13.35	0.01

CEA > 30 DAYS FROM EVENT	1 year stroke risk			5 year stroke risk
(n=1087)	OR	95% CI	P-value	OR	95% CI	P-value
0 vulnerable plaque features	1.00			1.00
1 vulnerable plaque feature	1.08	0.53-2.21	0.84	1.16	0.57-2.36	0.69
2 vulnerable plaque features	0.88	0.44-1.76	0.71	0.99	0.49-1.98	0.98
3 vulnerable plaque features	1.11	0.58-2.12	0.76	1.19	0.62-2.27	0.60
≥4 vulnerable plaque features	1.54	0.82-2.87	0.18	1.65	0.89-3.06	0.11

All data stratified by study cohort. Test for Interaction for ≥4 vulnerable plaque features by CEA timing: p=0.05