| Patient characteristic . | CEA group (n = 133) . | CM group (n = 260) . | p . |
|---|---|---|---|
| Sex | |||
| Male | 87 (65.4) | 169 (65.0) | 1.000 |
| Age (years) | 72.0 ± 9.5 | 74.7 ± 9.1 | <0.01 |
| Location of plaque | |||
| Right | 58 (43.6) | 124 (47.7) | 0.640 |
| Left | 53 (39.8) | 108 (41.5) | 0.835 |
| Bilateral | 22 (16.5) | 28 (10.8) | 0.156 |
| Symptomatic stenosis | 114 (85.7) | 73 (28.1) | <0.001 |
| Severity of stenosis | |||
| 70–89% stenosis | 124 (80.0) | 140 (48.6) | <0.001 |
| 90–99% stenosis | 18 (11.6) | 27 (9.3) | 0.410 |
| Occlusion | 12 (7.7) | 117 (40.6) | <0.001 |
| Data not available | 1 (0.7) | 4 (1.5) | 0.515 |
| CT scan of the brain | |||
| At time of diagnosis | 114 (85.7) | 214 (82.3) | 0.797 |
| With signs of chronic ischaemia | 30 (26.3) | 69 (32.2) | 0.411 |
| With signs of previous silent infarction | 35 (30.7) | 67 (31.3) | 1.000 |
| Reason for carotid ultrasound | |||
| CVI | 92 (69.2) | 156 (60.0) | 0.400 |
| Suspicion of CVI | 16 (12.0) | 24 (9.2) | 0.435 |
| Non-specific/non-focal neurological symptoms | 6 (4.5) | 21 (8.1) | 0.215 |
| Carotid bruit | 5 (3.8) | 17 (6.5) | 0.282 |
| Other reason | 14 (10.5) | 42 (16.2) | 0.187 |
| Co-morbidities | |||
| Previous CVI | 121 (91.0) | 209 (80.4) | 0.428 |
| Ischaemic heart disease | 41 (30.8) | 135 (51.9) | <0.05 |
| Peripheral vascular disease | 20 (15.0) | 52 (20.0) | 0.314 |
| Diabetes mellitus | 41 (30.8) | 85 (32.7) | 0.787 |
| Renal failure | 5 (3.8) | 19 (7.3) | 0.189 |
| Atrial fibrillation | 23 (17.3) | 63 (24.2) | 0.203 |
| Patient characteristic . | CEA group (n = 133) . | CM group (n = 260) . | p . |
|---|---|---|---|
| Sex | |||
| Male | 87 (65.4) | 169 (65.0) | 1.000 |
| Age (years) | 72.0 ± 9.5 | 74.7 ± 9.1 | <0.01 |
| Location of plaque | |||
| Right | 58 (43.6) | 124 (47.7) | 0.640 |
| Left | 53 (39.8) | 108 (41.5) | 0.835 |
| Bilateral | 22 (16.5) | 28 (10.8) | 0.156 |
| Symptomatic stenosis | 114 (85.7) | 73 (28.1) | <0.001 |
| Severity of stenosis | |||
| 70–89% stenosis | 124 (80.0) | 140 (48.6) | <0.001 |
| 90–99% stenosis | 18 (11.6) | 27 (9.3) | 0.410 |
| Occlusion | 12 (7.7) | 117 (40.6) | <0.001 |
| Data not available | 1 (0.7) | 4 (1.5) | 0.515 |
| CT scan of the brain | |||
| At time of diagnosis | 114 (85.7) | 214 (82.3) | 0.797 |
| With signs of chronic ischaemia | 30 (26.3) | 69 (32.2) | 0.411 |
| With signs of previous silent infarction | 35 (30.7) | 67 (31.3) | 1.000 |
| Reason for carotid ultrasound | |||
| CVI | 92 (69.2) | 156 (60.0) | 0.400 |
| Suspicion of CVI | 16 (12.0) | 24 (9.2) | 0.435 |
| Non-specific/non-focal neurological symptoms | 6 (4.5) | 21 (8.1) | 0.215 |
| Carotid bruit | 5 (3.8) | 17 (6.5) | 0.282 |
| Other reason | 14 (10.5) | 42 (16.2) | 0.187 |
| Co-morbidities | |||
| Previous CVI | 121 (91.0) | 209 (80.4) | 0.428 |
| Ischaemic heart disease | 41 (30.8) | 135 (51.9) | <0.05 |
| Peripheral vascular disease | 20 (15.0) | 52 (20.0) | 0.314 |
| Diabetes mellitus | 41 (30.8) | 85 (32.7) | 0.787 |
| Renal failure | 5 (3.8) | 19 (7.3) | 0.189 |
| Atrial fibrillation | 23 (17.3) | 63 (24.2) | 0.203 |
CEA: carotid endarterectomy; CM: conservative management; CT: computed tomography; CVI: cerebrovascular ischaemic event.
Data are presented as n (%) or mean ± SD values. Baseline characteristics of the patients at time of diagnosis of high-grade carotid stenosis divided in two groups: those who underwent carotid endarterectomy versus those who received conservative management. Data for CT scans with chronic ischaemia and previous silent infarction are expressed as percentage of all patients who underwent a CT scan at the time of diagnosis, not as a percentage of the population as a whole.
| Patient characteristic . | CEA group (n = 133) . | CM group (n = 260) . | p . |
|---|---|---|---|
| Sex | |||
| Male | 87 (65.4) | 169 (65.0) | 1.000 |
| Age (years) | 72.0 ± 9.5 | 74.7 ± 9.1 | <0.01 |
| Location of plaque | |||
| Right | 58 (43.6) | 124 (47.7) | 0.640 |
| Left | 53 (39.8) | 108 (41.5) | 0.835 |
| Bilateral | 22 (16.5) | 28 (10.8) | 0.156 |
| Symptomatic stenosis | 114 (85.7) | 73 (28.1) | <0.001 |
| Severity of stenosis | |||
| 70–89% stenosis | 124 (80.0) | 140 (48.6) | <0.001 |
| 90–99% stenosis | 18 (11.6) | 27 (9.3) | 0.410 |
| Occlusion | 12 (7.7) | 117 (40.6) | <0.001 |
| Data not available | 1 (0.7) | 4 (1.5) | 0.515 |
| CT scan of the brain | |||
| At time of diagnosis | 114 (85.7) | 214 (82.3) | 0.797 |
| With signs of chronic ischaemia | 30 (26.3) | 69 (32.2) | 0.411 |
| With signs of previous silent infarction | 35 (30.7) | 67 (31.3) | 1.000 |
| Reason for carotid ultrasound | |||
| CVI | 92 (69.2) | 156 (60.0) | 0.400 |
| Suspicion of CVI | 16 (12.0) | 24 (9.2) | 0.435 |
| Non-specific/non-focal neurological symptoms | 6 (4.5) | 21 (8.1) | 0.215 |
| Carotid bruit | 5 (3.8) | 17 (6.5) | 0.282 |
| Other reason | 14 (10.5) | 42 (16.2) | 0.187 |
| Co-morbidities | |||
| Previous CVI | 121 (91.0) | 209 (80.4) | 0.428 |
| Ischaemic heart disease | 41 (30.8) | 135 (51.9) | <0.05 |
| Peripheral vascular disease | 20 (15.0) | 52 (20.0) | 0.314 |
| Diabetes mellitus | 41 (30.8) | 85 (32.7) | 0.787 |
| Renal failure | 5 (3.8) | 19 (7.3) | 0.189 |
| Atrial fibrillation | 23 (17.3) | 63 (24.2) | 0.203 |
| Patient characteristic . | CEA group (n = 133) . | CM group (n = 260) . | p . |
|---|---|---|---|
| Sex | |||
| Male | 87 (65.4) | 169 (65.0) | 1.000 |
| Age (years) | 72.0 ± 9.5 | 74.7 ± 9.1 | <0.01 |
| Location of plaque | |||
| Right | 58 (43.6) | 124 (47.7) | 0.640 |
| Left | 53 (39.8) | 108 (41.5) | 0.835 |
| Bilateral | 22 (16.5) | 28 (10.8) | 0.156 |
| Symptomatic stenosis | 114 (85.7) | 73 (28.1) | <0.001 |
| Severity of stenosis | |||
| 70–89% stenosis | 124 (80.0) | 140 (48.6) | <0.001 |
| 90–99% stenosis | 18 (11.6) | 27 (9.3) | 0.410 |
| Occlusion | 12 (7.7) | 117 (40.6) | <0.001 |
| Data not available | 1 (0.7) | 4 (1.5) | 0.515 |
| CT scan of the brain | |||
| At time of diagnosis | 114 (85.7) | 214 (82.3) | 0.797 |
| With signs of chronic ischaemia | 30 (26.3) | 69 (32.2) | 0.411 |
| With signs of previous silent infarction | 35 (30.7) | 67 (31.3) | 1.000 |
| Reason for carotid ultrasound | |||
| CVI | 92 (69.2) | 156 (60.0) | 0.400 |
| Suspicion of CVI | 16 (12.0) | 24 (9.2) | 0.435 |
| Non-specific/non-focal neurological symptoms | 6 (4.5) | 21 (8.1) | 0.215 |
| Carotid bruit | 5 (3.8) | 17 (6.5) | 0.282 |
| Other reason | 14 (10.5) | 42 (16.2) | 0.187 |
| Co-morbidities | |||
| Previous CVI | 121 (91.0) | 209 (80.4) | 0.428 |
| Ischaemic heart disease | 41 (30.8) | 135 (51.9) | <0.05 |
| Peripheral vascular disease | 20 (15.0) | 52 (20.0) | 0.314 |
| Diabetes mellitus | 41 (30.8) | 85 (32.7) | 0.787 |
| Renal failure | 5 (3.8) | 19 (7.3) | 0.189 |
| Atrial fibrillation | 23 (17.3) | 63 (24.2) | 0.203 |
CEA: carotid endarterectomy; CM: conservative management; CT: computed tomography; CVI: cerebrovascular ischaemic event.
Data are presented as n (%) or mean ± SD values. Baseline characteristics of the patients at time of diagnosis of high-grade carotid stenosis divided in two groups: those who underwent carotid endarterectomy versus those who received conservative management. Data for CT scans with chronic ischaemia and previous silent infarction are expressed as percentage of all patients who underwent a CT scan at the time of diagnosis, not as a percentage of the population as a whole.
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