TABLE 5.
Univariate analysis with discrete time hazard model on recurrence
| Factor | Hazard ratio (95% confidence interval) | P value |
|---|---|---|
| Submucosal invasion, ≥500 μm vs <500 μm | NA | NA |
|
| ||
| Lymphovascular invasion, yes vs no | .95 (.12–7.76) | .96 |
|
| ||
| Histologic grade G2 (moderately differentiated) vs G1 (well differentiated) | 3.386 (.33–34.49) | .30 |
|
| ||
| Histologic grade G3 (poorly differentiated) vs G1 (well differentiated) | 5.505 (.43–70.66) | .19 |
|
| ||
| Did the patient receive the recommended follow-up radiofrequency ablation? yes vs no | NA | NA |
|
| ||
| Preoperative maximal diameter of the lesion (1-unit increment) | .97 (.92–1.03) | .31 |
|
| ||
| Maximal length of largest specimen (mm) (1-unit increment) | .97 (.93–1.02) | .215 |
|
| ||
| Histology of resected specimen, squamous cell carcinoma vs adenocarcinoma | .654 (.151–2.835) | .57 |
|
| ||
| R0 resection, yes vs no | .16 (.03–.78) | .023 |
|
| ||
| R1 resection, yes vs no | 6.253 (1.29–30.36) | .023 |
|
| ||
| Adjuvant chemotherapy, yes vs no | 2.475 (.657–9.323) | .181 |
|
| ||
| Adjuvant radiotherapy, yes vs no | 1.576 (.422–5.887) | .499 |
|
| ||
| Adjuvant chemotherapy and/or radiotherapy, yes vs no | 2.326 (.581–9.315] | .233 |
NA, not applicable.