| Clinical factor | Indication for Radiotherapy | univariate | multivariate | |
| Yes (n = 96) | No (n = 100) | P | P | |
| Age (≤75/>75) | 46/50 | 47/53 | 0.90 | - |
| Gender (male/female) | 54/42 | 52/48 | 0.55 | - |
| PS (≤2/> 2) | 55/41 | 61/39 | 0.60 | - |
| Cancer status (Metastatic/Recurrence/Inoperable) | 46/22/28 | 65/21/14 | 0.03 | 0.90 |
| No. of lesions (0 - 4/≥5) | 44/52 | 21/79 | 0.0002 | <0.0001 |
| Maximal tumor diameter (0 - 6 cm/≥6 cm) | 54/42 | 66/34 | 0.16 | - |
| Site of maximal tumor (Chest/Abdomen/Bone and soft tissue/Other) | 23/50/18/5 | 26/62/6/6 | 0.05 | 0.56 |
| Symptomatic localized lesion (Yes/No) | 77/19 | 22/78 | <0.0001 | <0.0001 |
| Primary site (Lung/Colorectum/Other) | 19/21/56 | 18/28/54 | 0.61 | - |