Characteristics | Case number | High (n = 20) | Low (n = 20) | P value |
---|---|---|---|---|
Age at surgery (years) | Â | Â | Â | 0.749 |
 < 60 | 23 | 11 | 12 |  |
 ≥ 60 | 17 | 9 | 8 |  |
Gender | Â | Â | Â | 0.288 |
 Male | 29 | 13 | 16 |  |
 Female | 11 | 7 | 4 |  |
pT stagea | Â | Â | Â | 0.038 |
 pT1 + pT2 | 13 | 3 | 9 |  |
 pT3 + pT4 | 27 | 17 | 11 |  |
Tumor size (cm) | Â | Â | Â | 0.337 |
 < 5 | 23 | 10 | 13 |  |
 ≥ 5 | 17 | 10 | 7 |  |
Location | Â | Â | Â | 0.749 |
 Cardiac | 17 | 9 | 8 |  |
 Non-cardiac | 23 | 11 | 12 |  |
pTNM stageb | Â | Â | Â | 0.025 |
 I + II | 17 | 5 | 12 |  |
 III + IV | 23 | 15 | 8 |  |
Differentiation | Â | Â | Â | 0.230 |
 Poorly | 37 | 20 | 17 |  |
 Well | 3 | 0 | 3 |  |