Table 3 Univariate analysis for risk factors that influence hemorrhage induced by stereotactic biopsy

Sex

0.077

1.049

0.781

Age

10.243

1.016

0.001*

Deep seated lesions

0.201

5.243

 < 0.001*

Concomitant edema and enhancement on MR imaging

18.701

2.131

 < 0.001*

Enhancement on radiology

10.918

1.530

0.001*

Hypertension

0.389

0.767

0.531

Intraoperative hypertension without a past history

4.343

0.123

0.037

Antiplatelet treatment

1.113

1.487

0.291

Slightly prolonged PT^#

0.001

0.101

0.996

Anesthesia

0.185

0.860

0.667

Surgical method

3.686

0.481

0.158

Operator experience

0.113

1.058

0.737

High-grade glioma

4.165

4.368

0.041*