Table 5.
Factors | Description | Univariate | Multivariate | ||||
---|---|---|---|---|---|---|---|
%, P-value | HR (95% CI) | P-value | |||||
OS | PFS | OS | PFS | OS | PFS | ||
RT technique | 3DCRT/IMRTvs 2D-RT | 36.4% vs28.6% 0.128 |
40.4% vs 14.3% 0.053 |
0.828 (0.205-3.351) | 0.896 (0.211-3.807) | 0.792 | 0.881 |
RT dose | ≥ 68 Gy vs <68Gy | 44.4% vs 22.2% 0.067 |
44.4% vs 13.0% 0.044 |
0.638 (0.118-3.450) | 0.951 (0.202-4.471) | 0.602 | 0.949 |
Tumor response | CR vs PR | 50.0% vs 20.0% 0.065 |
57.1% vs 10.0% 0.006 |
1.959 (0.388-9.903) | 4.741 (0.843-26.654) | 0.416 | 0.077 |
Abbreviations: RT, radiotherapy; HR, hazard ratio; CI, confidence interval; OS, overall survival; PFS, progression free survival; 2DRT, 2-dimensional radiotherapy; 3DCRT, 3-dimensional conformal radiotherapy; IMRT, intensity-modulated radiotherapy; CR, complete remission; PR, partial remission.