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Table 3 Multivariate analysis of Cox and Weibull model with prognostic factors

From: Application of Weibull model for survival of patients with gastric cancer

Characteristics

Cox(AIC = 4534.21)

Weilbull(AIC = 1693.28)

 

HR (CI: 95%)

HR (CI: 95%)

Age

1.01 (0.98-1.03)

1.03* (1.01-1.06)

Past medical history

  

   No

1

1

   Yes

1.17* (1.03-1.33)

1.22* (1.05-1.40)

Location of tumor

  

   Lower third

1

1

   Middle third

0.93 (0.74-1.18)

0.99 (0.86-1.25)

   Upper third

1.47* (1.12-1.93)

1.35* (1.19-1.53)

   Whole stomach

1.45* (1.08-1.93)

1.47* (1.21-1.75)

eradicative degree of surgery

  

   Utterly

1

1

   Relatively

1.03 (0.77-1.39)

1.79*(1.64-1.92)

   Palliative

2.16*(1.71-2.73)

4.07*(3.85-4.34)

Histologic grade

  

   Well differentiated

1

1

   Moderately differentiated

1.12*(1.05-1.19)

1.14*(1.08-1.24)

   Poorly differentiated

1.25*(1.18-1.33)

1.34*(1.17-1.55)

Depth of invasion

  

   T1

1

1

   T2

1.97*(1.53-2.54)

2.40*(2.10-2.53)

   T3

2.19* (1.68-2.86)

2.77* (2.53-2.96)

   T4

2.50*(1.82-3.44)

3.15*(3.20-3.99)

Stage

  

   I

1

1

   II

0.97 (0.57-1.63)

1.15 (0.91-1.42)

   III

1.57 (0.97-2.56)

1.93* (1.66-2.25)

   IV

2.06* (1.21-3.51)

3.03* (2.76-3.80)

  1. *significant at the 5% level
  2. HR, hazard ratio; CI, confidence interval
  3. AIC, akaike information criterion