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Table 2 Multivariate analysis of disease-free survival

From: Prognostic effect of matrix metalloproteinase-9 in patients with resected Non small cell lung cancer

Prognostic factor β P Relative risk 95% confidence interval
Overall histology     
  Tumor MMP-9 expression 0.286 0.142 1.332 0.908–1.952
  Lymphovascular invasion 0.586 0.028 1.797 1.065–3.032
  Pathologic stage (I vs. II) 1.264 0.000 3.538 2.259–5.541
  Pathologic stage (I vs. IIIA) 1.404 0.000 4.070 2.450–6.760
  Tumor histology  (squamous cell carcinoma vs. adeno) 0.685 0.002 1.985 1.299–3.033
Squamous cell carcinoma     
  Tumor MMP-9 expression −0.411 0.309 0.663 0.301–1.463
Adenocarcinoma     
  Tumor MMP-9 expression 0.580 0.035 1.787 1.041–3.067
  1. MMP-9: matrix metalloproteinase-9; adeno: adenocarcinoma.