Table 4 Analysis of prognostic factors in the super-elderly group
Variables | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
Hazard ratio (95% CI) | P value | Hazard ratio (95% CI) | P value | |
Sex (male/female) | 0.85 (0.43–1.66) | 0.63 | ||
PS score of 2–4 | 2.07 (0.99–4.29) | 0.052 | 0.98 (0.35–2.75) | 0.98 |
Tumor located on the right side | 1.23 (0.59–2.57) | 0.58 | ||
Albumin level ≤ 3.5 g/dL | 1.56 (0.80–3.07) | 0.19 | ||
BMI ≤ 18.5 | 1.74 (0.66–4.54) | 0.26 | ||
PNI ≤ 35 | 6.15 (2.00–18.9) | 0.001 | 8.57 (2.63–27.9) | 0.0003 |
Creatinine level ≥ 1.5 mg/dL | 1.78 (0.61–5.20) | 0.29 | ||
CEA level ≥ 5 ng/mL | 1.85 (0.91–3.77) | 0.089 | 2.27 (1.09–4.74) | 0.03 |
RAS mutation type | 1.20 (0.36–4.02) | 0.76 | ||
Poorly differentiated cancer or signet-ring cell carcinoma | 0.64 (0.28–1.51) | 0.3 | ||
Resection of primary tumor | 0.41 (0.18–0.92) | 0.026 | 0.45 (0.20–1.04) | 0.06 |
Chemotherapy | 0.68 (0.32–1.47) | 0.33 | ||