Variable | Survival (mo) Av. (95% CI) | HR | 95% CI | p value |
---|---|---|---|---|
Kaplan-Meier method | Cox’s univariate analysis | |||
Performance status (ECOG) | Â | Â | Â | 0.523 |
 0–1 (n=262) | 62.0 (57.4–66.5) | 1 |  |  |
 2–4 (n=39) | 59.9 (48.5–71.2) | 0.845 | 0.505–1.416 |  |
Location | Â | Â | Â | 0.381 |
 Colon (n=273) | 62.1 (57.6–66.5) | 1 |  |  |
 Rectum (n=28) | 57.7 (44.2–71.1) | 0.381 | 0.433–1.377 |  |
Decompression for BTS | Â | Â | Â | 0.155 |
 No (n=80) | 63.0 (56.0–70.0) | 1 |  |  |
 Yes (n=221) | 60.7 (55.6–65.7) | 0.724 | 0.463–1.130 |  |
Change in the decompression method | Â | Â | Â | 0.005 |
 No (n=282) | 63.8 (59.4–68.2) | 1 |  |  |
 Yes (n=19) | 35.5 (22.3–48.7) | 0.422 | 0.232–0.769 |  |
Depth of invasion | Â | Â | Â | <0.001 |
 T3 (n=179) | 68.5 (63.3–73.7) | 1 |  |  |
 T4 (n=121) | 49.5 (43.2–55.9) | 0.489 | 0.338–0.708 |  |
Lymph node metastasis | Â | Â | Â | 0.177 |
 N0 (n=164) | 65.1 (59.5–70.7) | 1 |  |  |
 N1-2 (n=137) | 58.4 (52.1–64.8) | 0.776 | 0.536–1.122 |  |
Lymph node metastasis (excluding Stage II cases with <12 harvested lymph nodes) | Â | Â | Â | 0.036 |
 N0 (n=130) | 69.3 (63.4–75.1) | 1 |  |  |
 N1-2 (n=137) | 58.9 (52.5–65.2) | 0.644 | 0.427–0.971 |  |
Postoperative complication | Â | Â | Â | 0.026 |
 grade 0-I (n=219) | 64.9 (59.8–69.9) | 1 |  |  |
 grade II-V (n=82) | 54.0 (45.7–62.3) | 1.553 | 1.053–2.289 |  |
Adjuvant chemotherapy | Â | Â | Â | 0.616 |
 No (n=153) | 60.5 (54.6–66.4) | 1 |  |  |
 Yes (n=148) | 63.9 (58.0–69.8) | 1.048 | 0.872–1.264 |  |
Adjuvant chemotherapy in Stage II | Â | Â | Â | 0.214 |
 No (n=113) | 63.8 (58.0–69.6) | 1 |  |  |
 Yes (n=51) | 59.8 (49.1–70.6) | 0.707 | 0.409–1.222 |  |
Adjuvant chemotherapy in Stage III | Â | Â | Â | 0.003 |
 No (n=40) | 44.3 (32.6–56.0) | 1 |  |  |
 Yes (n=97) | 63.4 (56.7–70.0) | 2.231 | 1.312–3.791 |  |
Preoperative serum CEA level (ng/mL) | Â | Â | Â | 0.224 |
 ≤ 5 (n=124) | 59.6 (54.2–65.0) | 1 |  |  |
 > 5 (n=167) | 59.4 (53.5–65.2) | 0.787 | 0.535–1.158 |  |
Preoperative serum CA 19-9 level (U/mL) | Â | Â | Â | 0.226 |
 ≤ 37 (n=239) | 63.1 (58.3–68.0) | 1 |  |  |
 > 37 (n=50) | 53.4 (43.9–62.9) | 0.748 | 0.468–1.196 |  |
Preoperative NLR | ||||
 ≤ 3 (n=113) | 59.4 (53.0–65.9) | 1 |  | 0.957 |
 > 3 (133) | 60.9 (54.3–67.5) | 1.011 | 0.674–1.518 |  |
 ≤ 5 (n=188) | 59.2 (54.1–64.3) | 1 |  | 0.798 |
 > 5 (n=58) | 61.8 (52.4–71.2) | 1.064 | 0.660–1.716 |  |