Table 2.
The univariate and multivariate analysis of factors related to local control
| Local control | |||
|---|---|---|---|
| Univariate (p value) | Multivariate (p value) | Hazard ratio (95%CI) | |
| Histology: CRC vs others | 0.556 | ||
| Previous chemotherapy: yes vs no | 0.406 | ||
| Posterior chemotherapy: yes vs no | 0.020 | 0.047 | 0.13 (0.02–0.97) |
| Location: lung vs liver | 0.044 | 0.569 | 0.74 (0.25–2.13) |
| MTD: ≥ 21 vs < 21 | 0.010 | ||
| GTV: ≥ 7 vs < 7 | 0.002 | 0.005 | 4.62 (1.57–13.58) |
| PTV BED10 dose: 95 ≥ vs < 95 | 0.582 | ||
CRC colorectal cancer, MTD maximum tumor diameter, GTV gross tumor volume, PTV planning target volume, BED biological effective dose, CI confidence interval