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Table 4 Multivariate Cox regression analysis for prediction factors of restenosis after endovascular treatment

From: Long-term outcome and factors associated with restenosis after combination therapy of balloon angioplasty and stenting for symptomatic intracranial stenosis

 

Hazard ratio

95% CI

P value

Age, y

1.008

0.970—1.047

0.7005

Sex

 Male

1.595

0.598—4.254

0.3509

 Female

Reference

-

 

Vascular risk factors

 Hypertension

1.818

0.508—6.507

0.3580

 Dyslipidemia

0.899

0.439—1.841

0.7706

 Diabetes mellitus

2.084

1.039—4.180

0.0386

 Coronary artery disease

1.682

0.760—3.720

0.1996

 Chronic kidney disease

0.719

0.200—2.583

0.6126

Vascular risk factors

  

0.2424

 Middle cerebral artery

1.267

0.235—6.838

 

 Internal cerebral artery

1.511

0.276—8.268

 

 Vertebral artery

0.444

0.061—3.234

 

 Basilar artery

Reference

-

 

Duration from last attack to procedure

0.993

0.982—1.004

0.2158

Stenosis rate: pretreatment

0.996

0.953—1.041

0.8656

Stenosis rate: posttreatment

1.009

0.979—1.041

0.5605

Length of lesion

1.358

1.174—1.571

 < 0.0001

Morphology of lesion

 Eccentric

1.571

0.782—3.155

0.2043

 Concentric

Reference

-

 

Max diameter of balloon/stent

0.661

0.339—1.287

0.2232

Primary procedures

 Balloon angioplasty

4.194

1.083—16.239

0.0379

 Stenting

Reference

-

 

Recurrence of ischemic events

  

0.4396

 TIA

2.733

0.579—12.903

 

 Ischemic stroke

1.130

0.292—4.375

 
  1. CI Confidence interval