Table 1: Clinical characteristics of the patients according to group A and B.
Note: NSCLC*: non-small cell lung cancer, SCLC†: small cell lung cancer, KPS‡: Karnofsky Performance Scale, RPA§: Recursive Partitioning Analysis
| | Total | group A (N = 90) | group B (N = 47) | p value (N = 43) |
| Gender | male | 66 (73.3%) | 35 (74.5%) | 31 (72.1%) | 0.799 |
| female | 24 (26.7%) | 12 (25.5%) | 12 (27.1%) |
| Age | mean | 56.66 | 57.87 | 55.33 | 0.335 |
| range | (12-84) | (14-84) | (12-77) |
| ≥ 65 | 23 (25.6%) | 16 (34.0%) | 7 (16.3%) | 0.054 |
| < 65 | 67 (74.4%) | 31 (66.0%) | 36 (83.7%) |
| Primary cancer | NSCLC* | 63(70.0%) | 34 (72.3%) | 29 (67.4%) | 0.612 |
| SCLC† | 3 (3.3%) | 3 (6.4%) | 0 (0.0%) |
| colorectal | 7 (7.8%) | 3 (6.4%) | 4 (9.3%) |
| kidney | 6 (6.7%) | 3 (6.4%) | 3 (7.0%) |
| gynecology | 3 (3.3%) | 1 (2.1%) | 2 (4.7%) |
| liver | 3 (3.3%) | 0 (0.0%) | 1 (2.3%) |
| breast | 2 (2.2%) | 2 (4.3%) | 2 (4.7%) |
| stomach | 2 (2.2%) | 1 (2.1%) | 1 (2.3%) |
| others | 1 (1.1%) | 0 (0.0%) | 1 (2.3%) |
| Extracranial metastasis | presence | 49 (54.4%) | 28 (59.6%) | 21 (48.8%) | 0.307 |
| absence | 41 (45.6%) | 19 (40.4%) | 22 (51.2%) |
| Status of cancer | under-control | 56 (62.2%) | 29 (61.7%) | 27 (62.8%) | 0.915 |
| out-of-control | 34 (37.8%) | 18 (38.3%) | 16 (37.2%) |
| KPS‡ score | ≥70 | 62 (68.9%) | 39 (83.0%) | 23 (53.5%) | 0.003 |
| < 70 | 28 (31.1%) | 8 (17.0%) | 20 (46.5%) |
| RPA§ class | 1 | 16 (17.8%) | 10 (21.3%) | 6 (14.0%) | 0.001 |
| 2 | 49 (54.4%) | 32 (68.1%) | 17 (39.5%) |
| 3 | 25 (27.8%) | 5 (10.6%) | 20 (46.5%) |