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Table 3 Potential predictors of stroke recurrence in the ipsilateral MCA in univariate analyses

From: Relationship between visible branch arteries distal to the stenosis on magnetic resonance angiography and stroke recurrence in patients with severe middle cerebral artery trunk stenosis: a one-year follow up study

  Stroke recurrence, n (%) Univariate analyses
  Yes (n = 28) No (n = 125) P value HR (95 % CI) P value
Age ≥ 65 years 15(53.6) 58(46.4) 0.535 1.3(0.6-2.8) 0.445
Male 21(75) 85(68) 0.651 1.4(0.6-3.3) 0.459
Hypertension 22(78.6) 84(67.2) 0.267 1.7(0.7-4.1) 0.276
Hypercholesterolemia 12(42.9) 63(50.4) 0.534 0.8(0.4-1.6) 0.487
Diabetes mellitus 10(35.7) 52(41.6) 0.672 0.8(0.4-1.8) 0.603
Smoking 15(53.6) 57(45.6) 0.531 1.3(0.6-2.8) 0.438
Asymptomatic ICAS 15(53.6) 59(47.2) 0.676 1.3(0.6-2.7) 0.514
Distributions of cerebral infarctions      
 Perforating artery infarctions 9(32.1) 59(47.2) 0.207 0.6(0.3-1.3) 0.168
 Cortical infarctions 16(57.1) 62(49.6) 0.534 1.6(0.7-3.4) 0.241
 Internal border-zone infarctions 16(57.1) 64(51.2) 0.677 1.3(0.6-2.8) 0.438
NIHSS score at admission ≥ 4 11(39.3) 62(49.6) 0.404 0.9(0.4-2.0) 0.855
Poor MCA branch signal intensity 25(89.3) 93(74.4) 0.134 2.8(0.8-9.3) 0.091
 Grade C 18(64.3) 42(33.6) 0.005 3.2(1.5-6.9) 0.003
Discontinued antiplatelet drug 1(3.6) 6(4.8) 1.000 0.5(0.1-3.6) 0.481
Discontinued statin 4(14.3) 13(10.4) 0.554 1.2(0.4-3.1) 0.759
  1. Abbreviations: CI, confidence interval; HR, hazard ratio; ICAS, intracranial atherosclerosis; MCA, middle cerebral artery; NIHSS, National Institute of Health Stroke Scale