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Table 3 Multivariate analysis of patients with primary spinal chordoma identified in the SEER Program database from 1973 to 2014

From: Analysis of prognostic factors for survival in patients with primary spinal chordoma using the SEER Registry from 1973 to 2014

Variable

HR (95%CI)

P value

Age in years

 

< 0.001

 0–20

Ref

 

 21–59

1.04 (0.65–1.10)

 

 > 60

2.72 (1.71–2.89)

 

Gender

 

0.11

 Female

Ref

 

 Male

1.18 (0.96–1.44)

 

Race

 

0.52

 White

Ref

 

 Black

0.48 (0.23–1.03)

 

 Other

0.89 (0.61–1.30)

 

Primary site

 

0.16

 Vertebrae

Ref

 

 Sacrum/pelvis

0.87 (0.71–1.06)

 

Disease stage

 

< 0.001

 Localized/regional

Ref

 

 Distant

2.16 (1.54–3.02)

 

 Unstaged

1.01(0.75–1.34)

 

Rural or urban

 

0.72

 Urban

Ref

 

 Rural

0.96 (0.77–1.21)

 

Therapy performed

 

< 0.001

 Surgical

Ref

 

 Non-surgical

2.14 (1.72–2.69)

 

Marital status

 

0.94

 Unmarried

Ref

 

 Married

0.99 (0.76–1.29)

 
  1. Calculated using Cox proportional hazards model and the values are given as the odds ratio, with the 95% confidence interval in parentheses
  2. HR indicates hazard ratio, CI indicates confidence interval, Ref indicates reference