Table 5. Univariate and multivariate analysis of DFS and OS for rectal GIST.
| Variables | DFS | OS | |||
|---|---|---|---|---|---|
| Univariate analysis (P value) | Multivariate analysis (P value) | Univariate analysis (P value) | Multivariate analysis (P value) | ||
| Sex (male, female) | 0.576 | – | 0.925 | – | |
| Age (>60, ≤60), years | 0.928 | – | 0.395 | – | |
| Tumor size (≤5, >5), cm | 0.312 | – | 0.763 | – | |
| Mitotic count (≤5, >5), /50 HPF | 0.035 | – | 0.982 | – | |
| NIH risk (very low and low, high) | 0.024 | 0.745 | 0.487 | – | |
| Preoperative Adjuvant therapy (yes, no) | 0.016 | 0.358 | 0.262 | – | |
| Postoperative Adjuvant therapy (yes, no) | 0.519 | – | 0.428 | – | |
| Surgical approach TA, NTA | 0.243 | – | 0.308 | – | |
*, only three factors that were significant in univariate analysis and two factors were included for the multivariate analysis for DFS. DFS, disease-free survival; OS, overall survival; GIST, gastrointestinal stromal tumor; NIH, National Institutes of Health. TA, transanal; NTA, nontransanal.