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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 - -
  1. *stands for a control group, and the rest compare with the control