Table 2 Multivariate analysis of Weibull parametric model with prognostic factors
From: Application of Weibull model for survival of patients with gastric cancer
Characteristics | β | χ 2 value | Pvalue |
|---|---|---|---|
Intercept | 0.76 | 0.53 | 0.467 |
Age | -0.03 | 6.27 | 0.012 |
Past medical history | -0.11 | 7.13 | 0.008 |
Location of tumor | - | 25.40 | <0.001 |
   Lower third | 0.40 | 8.83 | 0.003 |
   Middle third | 0.41 | 7.34 | 0.007 |
   Upper third | -0.17 | 1.08 | 0.299 |
   Whole stomach* | 0 | - | - |
eradicative degree of surgery | - | 20.62 | <0.001 |
   Utterly | 1.00 | 83.46 | <0.001 |
   Relatively | 0.91 | 42.27 | <0.001 |
   Palliative* | 0 | - | - |
Histologic grade | - | 12.51 | 0.002 |
   Well differentiated | -0.08 | 0.80 | <0.001 |
   Moderately differentiated | 0.34 | 9.30 | 0.082 |
   Poorly differentiated* | 0 | - | - |
Depth of invasion | - | 49.11 | <0.001 |
   T1 | 0.77 | 10.55 | 0.001 |
   T2 | 0.22 | 2.48 | 0.115 |
   T3 | 0.21 | 2.29 | 0.130 |
   T4* | 0 | - | - |
Stage | - | 22.41 | <0.001 |
   I | 0.62 | 8.27 | 0.004 |
   II | 0.76 | 21.22 | <0.001 |
   III | 0.27 | 6.23 | 0.013 |
   IV* | 0 | - | - |