Table 4.
Univariate analyses of variables associated with overall survival in esophageal cancer patients who underwent surgical resection
| Variable | 5-year survival (%) | p value |
|---|---|---|
| BMI class | ||
| Underweight | 26.8 | 0.25 |
| Normal weight | 25.2 | |
| Overweight | 28.5 | |
| Obesity | 34.4 | |
| Gender | ||
| Male | 26.6 | 0.5 |
| Female | 33.4 | |
| Age (year) | ||
| <65 | 33.7 | <0.001 |
| ≥65 | 22.3 | |
| ASA classification | ||
| I/II | 28.5 | 0.11 |
| III/IV | 25.9 | |
| Histology | ||
| Squamous cell carcinoma | 26.0 | 0.53 |
| Adenocarcinoma | 28.3 | |
| pT stage | ||
| pT1-2 | 55.5 | <0.001 |
| pT3-4 | 14.5 | |
| pN stage | ||
| pN0 | 52.7 | <0.001 |
| pN1 | 12.9 | |
| pM stage | ||
| pM0 | 32.3 | <0.001 |
| pM1a/M1b | 8.1 | |
| Lymph node ratio | ||
| <0.17 | 44.9 | <0.001 |
| ≥0.17 | 11.5 | |
| Differentiation grade of tumor | ||
| Good | 70.2 | <0.001 |
| Moderate | 30.3 | |
| Poor | 19.1 | |
| Radicality of resection | ||
| R0 | 37.9 | <0.001 |
| R1/R2 | 4.8 | |
BMI body mass index, ASA classification American society of anesthesiologists classification