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Table 6 Multiple logistic regression analysis of age, gender, post-RT intervals, radiation dose, radiation field, brain MRI, surgery, pathology to predict clinical outcome

From: Neurosurgery and prognosis in patients with radiation-induced brain injury after nasopharyngeal carcinoma radiotherapy: a follow-up study

Variables

Score

Degree of freedom

P value

Age

1.799

1

0.180

Gender

2.685

1

0.101

Interval 1(year) 1

2.671

1

0.102

Interval 2 (month) 2

1.057

1

0.304

Radiation dose (Gy)

0.774

1

0.379

Radiation field

0.839

1

0.360

Surgery

0.355

1

0.551

Brain MRI foci

Multiple brain lobes

2.637

1

0.104

Bilateral temporal lobes

2.019

1

0.155

Unilateral temporal lobe

0.165

1

0.685

Brain stem

0.355

1

0.551

Cyst

3.462

1

0.063

Mass effect and/or shift of the midline

2.637

1

0.104

Pathology

Brain necrosis

0.709

1

0.400

Gliosis

0.410

1

0.522

Small vascular proliferation

2.026

1

0.155

Haemorrhage

0.709

1

0.400

Edema

0.197

1

0.657

 

Infiltration of inflammatory cells

5.318

1

0.378

  1. Dependent: clinical outcome (survival or died).
  2. 1 Interval between radiation and diagnosis of RI (for the patients who underwent reirradiation, this was the interval between reirradiation and diagnosis of RI).
  3. 2 Interval between diagnosis of RI and surgery.