Table 1 Characteristics of 686 patients enrolled
|  | Total (N = 686) | ILAS+S (n = 231, 33.7%) | ILAS+AS (n = 84, 12.2%) | ILAS-(n = 371, 54.1%) | P | |||
|---|---|---|---|---|---|---|---|---|
N | (%) | N | (%) | N | (%) | |||
Age, y | ||||||||
  < 65 | 265 | 82 | (35.5) | 42 | (50) | 141 | (38) | 0.061 |
  ≥ 65 | 421 | 149 | (64.5) | 42 | (50) | 230 | (62) |  |
Sex | ||||||||
 Female | 250 | 88 | (38.1) | 34 | (40.5) | 128 | (34.5) | 0.48 |
 Male | 436 | 143 | (61.9) | 50 | (59.5) | 243 | (65.5) |  |
Body mass index, kg/m2 | Â | Â | Â | Â | Â | Â | Â | 0.624 |
  < 24 | 306 | 101 | (43.7) | 44 | (52.4) | 161 | (43.4) | 0.514 |
 24–27 | 230 | 81 | (35.1) | 24 | (28.6) | 125 | (33.7) |  |
  ≥ 27 | 150 | 49 | (21.2) | 16 | (19.) | 85 | (22.9) |  |
Carotid artery stenosis | ||||||||
  < 50% | 602 | 180 | (85.7) | 72 | (91.1) | 350 | (96.7) | < 0.001 |
  ≥ 50% | 49 | 30 | (14.3) | 7 | (8.9) | 12 | (3.3) |  |
Glomerular filtration rate | ||||||||
  ≥ 60 | 345 | 103 | (44.6) | 45 | (53.6) | 197 | (53.2) | 0.084 |
 30–59 | 285 | 113 | (48.9) | 33 | (39.3) | 139 | (37.6) |  |
  < 30 | 55 | 15 | (6.5) | 6 | (7.1) | 34 | (9.2) |  |
Uric acid |  | 5.9 | ±4.4 | 5.9 | ±1.9 | 5.6 | ±1.8 | 0.36 |
 Normal | 597 | 190 | (86.4) | 72 | (86.7) | 335 | (91.5) | 0.109 |
 Abnormal | 72 | 30 | (13.6) | 11 | (13.3) | 31 | (8.5) |  |
History of ischemic stroke | 254 | 96 | (41.6) | 30 | (35.7) | 128 | (34.5) | 0.211 |
Hypertension | 481 | 170 | (73.6) | 66 | (78.6) | 245 | (66) | 0.028 |
Diabetes mellitus | 277 | 94 | (40.7) | 42 | (50) | 141 | (38) | 0.128 |
Hyperlipidemia | 386 | 144 | (62.3) | 47 | (56) | 195 | (52.6) | 0.063 |
Heart disease | 171 | 62 | (26.8) | 21 | (25) | 88 | (23.7) | 0.69 |
Atrial fibrillation | 50 | 17 | (7.4) | 8 | (9.5) | 25 | (6.7) | 0.674 |
Smoking | 238 | 83 | (35.9) | 24 | (28.6) | 131 | (335.3) | 0.448 |
Baseline NIHSS | ||||||||
 0–6 | 413 | 120 | (51.9) | 55 | (65.5) | 238 | (64.2) | < 0.001 |
 7–15 | 198 | 66 | (28.6) | 20 | (23.8) | 112 | (30.2) |  |
 16–38 | 75 | 45 | (19.5) | 9 | (10.7) | 21 | (5.7) |  |
Old infarction | 480 | 154 | (66.7) | 67 | (79.8) | 259 | (69.8) | 0.081 |
Multiple ILAS | 185 | 144 | (62.3) | 41 | (48.8) | 0 | (0) | Â |
Risk factors control treatment | ||||||||
 Regular treated | 635 | 213 | (92.2) | 78 | (92.9) | 344 | (92.7) | 0.997 |
 Not treated | 40 | 14 | (6.1) | 5 | (6.0) | 21 | (5.7) |  |
 Irregular | 11 | 4 | (1.7) | 1 | (1.2) | 6 | (1.6) |  |
Follow | ||||||||
 Follow-up in the study hospital | 587 | 189 | (86.5) | 77 | (91.7) | 321 | (81.8) | 0.066 |
 Follow-in other care facilities | 99 | 42 | (13.5) | 7 | (8.3) | 50 | (18.2) |  |