Table 4:
Cox Proportional Hazards Regression for Time to Cancer Recurrence in Propensity Score Matched Cohort (N=528)
| Characteristic | HR (95%CI) | P value |
|---|---|---|
| Bowel Prep | ||
| No | 1.0 | REF |
| Yes | 0.57 (0.37–0.89) | <0.05 |
| Age | 1.00 (0.98–1.02) | 0.906 |
| Gender | ||
| Male | 1.0 | REF |
| Female | 1.32 (0.85–2.03) | 0.212 |
| Race | ||
| White | 1.0 | REF |
| Black | 0.64 (0.38–1.07) | 0.089 |
| Asian | 0.15 (0.02–1.16) | 0.070 |
| Other | 2.16 (0.70–6.66) | 0.178 |
| BMI | ||
| < 18.5 | 1.19 (0.49–2.89) | 0.697 |
| 18.5 – 24.9 | 1.0 | REF |
| 25 – 29.9 | 0.49 (0.28–0.87) | <0.05 |
| >30 | 0.85 (0.50–1.44) | 0.540 |
| Unknown | 0.61 (0.14–2.66) | 0.511 |
| Stage | ||
| Stage 1 | 1.0 | REF |
| Stage 2 | 2.14 (1.01–2.89) | <0.05 |
| Stage 3 | 3.01 (1.43–6.28) | <0.05 |
| Stage 4 | 1.09 (0.43–2.80) | 0.854 |
| Site | ||
| Colon | 1.78 (1.06–2.99) | <0.05 |
| Rectum | 1.0 | REF |
| Emergent Surgery | ||
| No | 1.0 | REF |
| Yes | 5.34 (1.11–25.6) | <0.05 |
| Anastomotic Leak | ||
| No | 1.0 | REF |
| Yes | 1.05 (0.40–2.79) | 0.915 |
| SSI | ||
| No | 1.0 | REF |
| Yes | 0.46 (0.20–1.03) | 0.060 |
| Radiation | ||
| No | 1.0 | REF |
| Yes | 2.01 (1.24–3.26) | <0.01 |
| Chemotherapy | ||
| No | 1.0 | REF |
| Yes | 1.78 (1.11–2.85) | <0.05 |
| Blood Transfusion | ||
| No | 1.0 | REF |
| Yes | 0.74 (0.34–1.59) | 0.433 |
| Years of Follow Up | ||
| 1 year | 1.0 | REF |
| 2 years | 1.06 (0.33–3.42) | 0.917 |
| 3 years | 0.92 (0.29–2.90) | 0.890 |
| 4 years | 0.61 (0.18–2.07) | 0.430 |
| 5 years | 0.62 (0.17–2.24) | 0.463 |
| ≥6 years | 0.22 (0.05–0.95) | <0.05 |
BMI = body mass index
SSI = surgical site infection