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Table 1 Patient characteristics and univariate analysis
| Factors | N | 5-year survival (%) | p | |
|---|---|---|---|---|
| Age, year | ≤65 | 210 | 53.3 | 0.003 |
| >65 | 96 | 34.6 | ||
| Sex | Male | 235 | 44.0 | 0.039 |
| Female | 71 | 57.8 | ||
| Histology | AC | 98 | 49.7 | 0.590 |
| SCC | 208 | 45.7 | ||
| Surgical type | Transthoracic | 186 | 47.0 | 0.701 |
| McKeown | 53 | 40.4 | ||
| Transabdominal | 67 | 51.2 | ||
| Differentiation | Well | 38 | 61.9 | 0.000 |
| Moderately | 173 | 55.1 | ||
| Poorly | 95 | 24.9 | ||
| T stage | Tis/T1 | 31 | 82.2 | 0.000 |
| T2 | 65 | 62.1 | ||
| T3 | 159 | 43.3 | ||
| T4a | 51 | 17.1 | ||
| N stage | N0 | 156 | 67.5 | 0.000 |
| N1 | 73 | 38.6 | ||
| N2 | 52 | 14.2 | ||
| N3-4 | 25 | 9.5 | ||
| TNM stage | 0-I | 42 | 80.5 | 0.000 |
| II | 118 | 66.5 | ||
| III | 146 | 21.3 | ||
| Weight lost | No/Little | 203 | 46.5 | 0.555 |
| Middle | 50 | 56.8 | ||
| Large | 53 | 41.7 | ||
| Adjuvant Chemoradiation | Yes | 78 | 41.7 | 0.187 |
| No | 228 | 48.8 | ||
| Albumin | <35 g/l | 36 | 26.7 | 0.000 |
| 35–40 g/l | 132 | 41.6 | ||
| >40 g/l | 138 | 57.8 | ||
| Lymphocyte | <1.1*109 | 42 | 48.7 | 0.780 |
| 1.1–3.2*109 | 228 | 47.5 | ||
| >3.2*109 | 36 | 42.6 | ||
| NLR | <5 | 289 | 47.1 | 0.787 |
| ≥5 | 17 | 47.1 | ||
| REE/kg | <23.2 | 245 | 50.4 | 0.024 |
| ≥23.2 | 61 | 35.2 | ||
| REE | Low | 154 | 40.4 | 0.010 |
| High | 152 | 55.3 | ||
| FBG | Low | 108 | 35.0 | 0.020 |
| High | 198 | 51.7 | ||
| BMI | Low | 81 | 36.8 | 0.046 |
| Normal | 186 | 49.1 | ||
| High | 39 | 62.8 |
