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. Author manuscript; available in PMC: 2014 Aug 1.
Published in final edited form as: Neurosurgery. 2013 Aug;73(2):224–232. doi: 10.1227/01.neu.0000430310.63702.3e

TABLE 5.

Predictors of Postoperative ICHa

Variable OR 95% CI P Value
Age >60 y 2.66 1.36-5.18 <.01
Male sex 1.22 0.63-2.36
Comorbidities
    Smoker 0.93 0.43-1.98
    Coronary artery disease 0.83 0.30-2.26
    Vascular disease 1.30 0.65-2.59
    HIV 1.07 0.09-12.04
    Previous cancer diagnosis 1.31 0.69-2.51
Medications on consultation
    Aspirin 2.51 1.23-5.28 <.05
    Clopidogrel 0.83 0.16-4.43
    Warfarin 0.84 0.16-4.47
    NSAIDs 0.29 0.03-2.41
    Steroids 1.26 0.64-2.48
Imaging and clinical studies
    Focal lesion on CT scan 2.19 0.91-5.29
    Focal lesion on MRI 1.33 0.65-2.72
    Enhancing lesion on MRI 2.00 1.01-3.99
    Catheter angiography performed 0.52 0.23-1.14
    CT angiography performed 2.07 0.13-33.8
    MR angiography performed 0.32 0.11-0.99 <.05
    Vasculitis/vasculopathy on angiography 0.44 0.09-2.09
Surgical technique
    Biopsy of specific lesion on MRI 1.87 0.90-3.90
    Image-guided surgery 1.58 0.77-3.24
a

ICH, intracranial hemorrhage; OR, odds ratio; CI, confidence interval; HIV, human immunodeficiency virus; NSAIDs, nonsteroidal anti-inflammatory drugs; CT, computed tomography; MRI, magnetic resonance imaging.