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Table 5 Final Cox Proportional Hazards Model in Propensity Score-Matched Cohort

From: Laparoscopic versus open colectomy for colon cancer in an older population: a cohort study

Variable Hazard Ratio 95% CI P valuea
Laparoscopic Colectomy 0.936 0.760-1.152 0.5301
Female Gender 0.996 0.805-1.232 0.9693
Positive Nodes 2.028 1.504-2.735 < 0.0001
Chemotherapy Receipt 0.550 0.423-0.717 < 0.0001
Chemotherapy*ln(survival time) 1.460 1.222-1.744 < 0.0001
Regional Stage disease 1.520 1.103-2.095 0.0105b
Distant Stage disease 6.463 4.409-9.472 < 0.0001b
  1. a Wald test.
  2. b Compared with localized disease.