Table 1. Association between p-STAT3 expression and clinical characteristics of OS patients.
| Variables | Cases | p-STAT3 Lower Expression | p-STAT3 Higher Expression | P-value | ||
| N | % | N | % | |||
| Gender | 0.999 | |||||
| Male | 17 | 7 | 53.8 | 10 | 58.8 | |
| Female | 13 | 6 | 46.2 | 7 | 41.2 | |
| Age at diagnosis (years) | 0.443 | |||||
| ≤20 | 21 | 8 | 61.5 | 13 | 76.5 | |
| >20 | 9 | 5 | 38.5 | 4 | 23.5 | |
| Tumor location | 0.920 | |||||
| Femur | 11 | 4 | 30.8 | 7 | 41.2 | |
| Tibia | 8 | 4 | 30.8 | 4 | 23.6 | |
| Humerus | 6 | 3 | 23.1 | 3 | 17.6 | |
| Others | 5 | 2 | 15.3 | 3 | 17.6 | |
| Histological types | 0.543 | |||||
| Osteoblastic | 15 | 7 | 53.8 | 8 | 47.1 | |
| Chondroblastic | 12 | 4 | 30.8 | 8 | 47.1 | |
| Others | 3 | 2 | 15.4 | 1 | 5.8 | |
| Lung metastasis occurs at the time of diagnosis | 0.026* | |||||
| Occurred | 12 | 2 | 15.4 | 10 | 58.8 | |
| Not occurred | 18 | 11 | 84.6 | 7 | 41.2 | |
Notes: χ2 (fisher’s exact) test, *p < 0.05.