Table 1.
Association between chemotherapy and patient characteristics
| Characteristic | Number of patients | p value | Number of patients | p value | ||
|---|---|---|---|---|---|---|
| Any chemotherapy | No chemotherapy | Ifosfamide | No ifosfamide | |||
| Age (years) | ||||||
| ≥ 60 | 10 (50%) | 10 (50%) | 0.020 | 5 (25%) | 15 (75%) | 0.111 |
| < 60 | 18 (85.7%) | 3 (14.3%) | 11 (52.4%) | 10 (47.6%) | ||
| Sex | ||||||
| Male | 18 (66.7%) | 9 (33.3%) | 0.266 | 10 (37%) | 17 (63%) | 0.717 |
| Female | 10 (71.4%) | 4 (28.6%) | 6 (42.9%) | 8 (57.1%) | ||
| Tumor location | ||||||
| Trunk | 11 (73.3%) | 4 (26.7%) | 0.734 | 9 (60%) | 6 (40%) | 0.037 |
| Extremity | 17 (65.4%) | 9 (34.6%) | 7 (26.9%) | 19 (73.1%) | ||
| Tumor size (cm) | ||||||
| > 8 | 16 (72.7%) | 6 (27.3%) | 0.511 | 9 (40.9%) | 13 (59.1%) | 0.790 |
| ≤ 8 | 12 (63.2%) | 7 (36.8%) | 7 (36.8%) | 12 (63.2%) | ||
| Initial diagnosis | ||||||
| Incorrect | 13 (65%) | 7 (35%) | 0.628 | 9 (45%) | 11 (55%) | 0.444 |
| Correct | 15 (71.4%) | 6 (28.6%) | 7 (33.3%) | 14 (66.7%) | ||
| Pathologic fracture | ||||||
| Yes | 8 (57.1%) | 6 (42.9%) | 0.269 | 2 (14.3%) | 12 (85.7%) | 0.041 |
| No | 20 (74.1%) | 7 (25.9%) | 14 (51.9%) | 13 (48.1%) | ||
| Surgical margin | ||||||
| Positive | 2 (28.6%) | 5 (71.4%) | 0.024 | 0 (0%) | 7 (100%) | 0.031 |
| Negative | 26 (76.5%) | 8 (23.5%) | 16 (47.1%) | 18 (52.9%) | ||
| Metastasis at diagnosis | ||||||
| Yes | 6 (85.7%) | 1 (14.3%) | 0.399 | 2 (28.6%) | 5 (71.4%) | 0.685 |
| No | 22 (64.7%) | 12 (35.3%) | 14 (41.2%) | 20 (58.8%) | ||