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Table 1 Patient and tumor characteristics

From: Delayed postoperative radiotherapy increases the incidence of radiographic local tumor progression before radiotherapy and leads to poor prognosis in spinal metastases

Characteristic

NPBRa

PBRa

P-value

Age (years)

53.7 ± 11.5

59.4 ± 11.8

0.082

Sex

  

0.386

 Male

43 (57.3%)

10 (71.4%)

 

 Female

32 (42.7%)

4 (28.6%)

 

Tumor histology

  

0.404

Renal

17 (22.7%)

3 (21.4%)

 

 Lung

16 (21.3%)

3 (21.4%)

 

 Breast

13 (17.3%)

0 (0.0%)

 

 Thyroid

5 (6.7%)

3 (21.4%)

 

 Hepatocellular

3 (4.0%)

1 (7.1%)

 

 Colorectal

4 (5.3%)

1 (7.1%)

 

 Others

17 (22.7%)

3 (21.4%)

 

Location

  

0.341

 Cervical

20 (26.7%)

7 (50.0%)

 

 Thoracic

31 (41.3%)

5 (35.7%)

 

 Lumbar

15 (20.0%)

1 (7.1%)

 

 Cervical and thoracic

3 (4.0%)

1 (7.1%)

 

 Thoracic and lumbar

6 (8.0%)

0 (0.0%)

 

ESCC grade

  

0.244

 0

1 (1.3%)

0 (0.0%)

 

 1b

1 (1.3%)

0 (0.0%)

 

 1c

5 (6.7%)

1 (7.1%)

 

 2

21 (28.0%)

8 (57.1%)

 

 3

47 (62.7%)

5 (35.7%)

 

SINS

11.1 ± 2.2

10.4 ± 2.2

0.247

Tomita score

5.2 ± 2.0

4.9 ± 1.9

0.657

Tokuhashi score

8.4 ± 2.8

9.0 ± 2.9

0.453

Operation types

  

0.436

 Separation surgery

44 (58.7%)

7 (50.0%)

 

 Decompression surgery

20 (26.7%)

3 (21.4%)

 

 Vertebrectomy

11 (14.7%)

4 (28.6%)

 

Radiotherapy methods

  

1.000

 IMRT

21 (28.0%)

4 (28.6%)

 

 SBRT

54 (72.0%)

10 (71.4%)

 
  1. ESCC, epidural spinal cord compression; IMRT, intensity-modulated radiotherapy; NPBR, no progression before radiotherapy; PBR, progression before radiotherapy; SBRT, stereotactic body radiotherapy; SINS, spine instability neoplastic score
  2. aValues are expressed as mean ± standard deviation or number of patients (percentage in each group)