Table 4 Final Cox Proportional Hazards Model in Overall 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 | 0.902 | 0.776-1.050 | 0.1838 |
Female Gender | 0.846 | 0.818-0.876 | < 0.0001 |
Black Race | 1.174 | 1.104-1.249 | < 0.0001b |
Emergent Presentation | 1.419 | 1.325-1.519 | < 0.0001 |
Positive Nodes | 1.897 | 1.812-1.986 | < 0.0001 |
Chemotherapy Receipt | 3.380 | 2.040-5.600 | < 0.0001 |
Chemotherapy*ln(survival time) | 1.356 | 1.314-1.399 | < 0.0001 |
Regional Stage | 1.264 | 1.201-1.329 | < 0.0001c |
Distant Stage | 5.560 | 5.236-5.903 | < 0.0001c |
Regional Stage*ln(survival time) | 0.967 | 0.941-0.993 | 0.0127 |
Distant Stage*ln(survival time) | 1.037 | 1.006-1.068 | 0.0184 |
Age at Dx (1-year change) | 1.056 | 1.053-1.059 | < 0.0001 |
Age at Dx*ln(survival time) | 1.003 | 1.001-1.004 | 0.0011 |
Age at Dx*Chemotherapy | 0.978 | 0.972-0.985 | < 0.0001 |
Charlson index (1-unit change) | 1.257 | 1.237-1.277 | < 0.0001 |