Table 3

Comparison of the primary outcome of different qualified arteries

CategoriesNumberHR (95%)P value
PTAS group
 Anterior circulation vs posterior circulation29/217 (13.36%) vs 25/183 (13.66%)1.04 (0.61 to 1.78)0.87
 MCA vs VA13/157 (8.28%) vs 8/84 (4.76%)0.87 (0.35 to 2.12)0.75
 MCA vs BA13/157 (8.28%) vs 17/99 (17.17%)2.17 (1.04 to 4.55)0.03
 MCA vs ICA13/157 (8.28%) vs 16/60 (26.67%)3.41 (1.49 to 7.77)<0.001
 VA vs BA8/84 (4.76%) vs 17/99 (17.17%)1.88 (0.86 to 4.12)0.13
 VA vs ICA8/84 (4.76%) vs 16/60 (26.67%)2.97 (1.31 to 6.70)0.008
 BA vs ICA17/99 (17.17%) vs 16/60 (26.67%)1.53 (0.76 to 3.09)0.22
Medical group
 Anterior circulation vs posterior circulation29/250 (11.60%) vs 14/159 (8.81%)0.75 (0.40 to 1.38)0.37
 MCA vs VA18/184 (9.78%) vs 6/56 (10.71%)1.10 (0.43 to 2.83)0.84
 MCA vs BA18/184 (9.78%) vs 8/103 (7.77%)0.79 (0.35 to 1.75)0.57
 MCA vs ICA18/184 (9.78%) vs 11/66 (16.67%)1.79 (0.78 to 4.13)0.12
 VA vs BA6/56 (10.71%) vs 8/103 (7.77%)0.72 (0.24 to 2.15)0.53
 VA vs ICA6/56 (10.71%) vs 11/66 (16.67%)1.64 (0.63 to 4.24)0.33
 BA vs ICA8/103 (7.77%) vs 11/66 (16.67%)2.26 (0.89 to 5.71)0.07
  • Data are n (%), or median (IQR).

  • Boldface values indicate statistically significant differences.

  • BA, basilar artery; ICA, internal carotid artery; MCA, middle cerebral artery; PTAS, percutaneous transluminal angioplasty and stenting; VA, vertebral artery.