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Table 6 Univariate and multivariate analysis in hearing preservation in patient with serviceable hearing after GKRS

From: Outcome of hearing preservation related to tumor morphologic analysis in acoustic neuromas treated by gamma knife radiosurgery

 

Univariate

Multivariate

95% CI

P

HR

p

HR

Tumor morphology

P < 0.01

4.1

P < 0.01

4.45

2.1-7.9

Length of tumor in IAC

P < 0.01

3.68

P = 0.15

1.92

0.9-3.1

Width of tumor in IAC

P < 0.05

2.93

P = 0.23

2.1

1.1-2.9

Percentage of BS compression

P < 0.05

3.12

P = 0.22

1.77

1.3-3.1

Percentage of 4th ventricle compression

P < 0.05

3.42

P = 0.19

1.67

0.7-3.1

Cochlear dosage

P < 0.01

4.2

P = 0.09

2.11

0.8-3.2

Lateral semicircular canal dosage

P < 0.05

3.51

P = 0.35

1.88

1.1-3.1

Medial semicircular canal dosage

P < 0.01

4.33

P = 0.21

1.62

0.7-3.1

Inferior semicircular canal dosage

P < 0.01

3.77

P = 0.19

1.57

0.8-2.7

BS dosage

P < 0.05

2.95

P = 0.39

1.44

0.6-2.8

10 Gy volume in BS

P < 0.05

3.15

P = 0.52

1.39

0.4-2.2

  1. P p value
  2. HR hazard ratio
  3. 95% CI confidence interval