Table 1. Clinical characteristics of patients in propensity score matched.
| Factor | ERM+ (n=37) (%) | ERM− (n=74) (%) | P value |
|---|---|---|---|
| Age (years) (mean ± SD) | 59.5±8.5 | 60.6±8.3 | 0.784 |
| Sex | 0.859 | ||
| Male | 31 (83.8) | 61 (82.4) | |
| Female | 6 (16.2) | 13 (17.6) | |
| Pathological stage | 0.738 | ||
| I | 8 (21.6) | 16 (21.6) | |
| II | 19 (51.4) | 31 (41.9) | |
| III | 8 (21.6) | 20 (27.0) | |
| IV | 2 (5.4) | 7 (9.5) | |
| Adjuvant therapy | 0.635 | ||
| Yes | 10 (27.0) | 16 (21.6) | |
| No | 27 (73.0) | 58 (78.4) | |
| Lymph node metastasis | 0.232 | ||
| Yes | 19 (51.4) | 29 (39.2) | |
| No | 18 (48.6) | 45 (60.8) | |
| Pathological type | – | ||
| Severe or moderate | 17 (45.9) | – | |
| Carcinoma | 20 (54.1) | – | |
| Operation time (months) (mean ± SD) | 45.3±22.6 | 43.2±21.7 | 0.626 |
Data are expressed as n (%) unless otherwise specified. ERM+, positive esophageal proximal resection margin; ERM−, negative esophageal proximal resection margin.