Table2 Univariate analysis identifying prognostic factors for OS and DSS.

From: Neck dissection improves the prognosis of patients with early-stage oral squamous cell carcinoma

Variables

Diseases-specific survival

Overall survival

HR(95%CI)

P-value

HR(95%CI)

P-value

Age

 < 65 years

Ref

 

Ref

 

 ≥ 65 years

1.47 (1.36,1.59)

 < 0.001

2.17 (2.05,2.3)

 < 0.001

Sex

 Male

Ref

 

Ref

 

 Female

1.17 (1.08,1.27)

 < 0.001

1.04 (0.98,1.1)

0.158

Site

 Lip

Ref

 

Ref

 

 Tongue

4.01 (3.35,4.79)

 < 0.001

1.08 (1,1.17)

0.046

 Gum

5.18 (4.17,6.44)

 < 0.001

1.55 (1.38,1.74)

 < 0.001

 Floor of mouth

4.79 (3.89,5.9)

 < 0.001

1.59 (1.43,1.77)

 < 0.001

 Palate

6.09 (4.83,7.68)

 < 0.001

1.84 (1.62,2.1)

 < 0.001

 Buccal mucosa

5.97 (4.85,7.36)

 < 0.001

1.72 (1.54,1.93)

 < 0.001

 Others

6.37 (4.58,8.84)

 < 0.001

1.64 (1.31,2.07)

 < 0.001

Marital status

 Married

Ref

 

Ref

 

 Others

1.45 (1.34,1.57)

 < 0.001

1.56 (1.48,1.65)

 < 0.001

Race

 White

Ref

 

Ref

 

 Black

1.68 (1.41,1.99)

 < 0.001

1.44 (1.26,1.63)

 < 0.001

 Others

1.04 (0.9,1.21)

0.564

0.78 (0.69,0.87)

 < 0.001

Residence

 Urban

Ref

 

Ref

 

 Rural

0.93 (0.83,1.04)

0.217

1.1 (1.02,1.19)

0.009

Income

 < 50,000

Ref

 

Ref

 

50,000–75,000

0.94 (0.81,1.09)

0.399

0.93 (0.84,1.03)

0.145

 > 75,000

0.82 (0.71,0.95)

0.007

0.81 (0.73,0.89)

 < 0.001

Grade

    

 I

Ref

 

Ref

 

 II

1.9 (1.72,2.11)

 < 0.001

1.38 (1.29,1.47)

 < 0.001

 III

2.67 (2.37,3.01)

 < 0.001

1.61 (1.48,1.75)

 < 0.001

Neck dissection

 No

  

Ref

 

 Yes

0.86 (0.79,0.94)

 < 0.001

0.75(0.7–0.8)

 < 0.001

Radiation

 No

  

Ref

 

 Yes

2.33 (2.15,2.52)

 < 0.001

1.51 (1.42,1.6)

 < 0.001

Chemotherapy

 No

  

Ref

 

 Yes

1.93 (1.75,2.14)

 < 0.001

1.26 (1.16,1.37)

 < 0.001