Table-I.
Demographic and clinical characteristics of osteosarcoma cases and control subjects.
| Variables | Osteosarcoma cases | % | Control subjects | % | χ2-test | P value |
|---|---|---|---|---|---|---|
| Age | 18.4±11.5 | 19.5±10.8 | ||||
| ≤20 | 81 | 46.02 | 86 | 48.86 | ||
| >20 | 95 | 53.98 | 90 | 51.14 | 0.28 | 0.59 |
| Gender | ||||||
| Male | 109 | 61.93 | 109 | 61.93 | ||
| Female | 67 | 38.07 | 67 | 38.07 | 0.00 | 1.00 |
| Family history of cancer | ||||||
| No | 16 | 9.09 | 13 | 7.39 | ||
| Yes | 160 | 90.91 | 163 | 92.61 | 0.34 | 0.56 |
| Tumor location | ||||||
| Long tubular bones | 134 | 76.14 | ||||
| Axial skeleton | 42 | 23.86 | ||||
| Stage | ||||||
| I-II | 101 | 57.39 | ||||
| III-IV | 75 | 42.61 | ||||
| Therapy | ||||||
| Amputation | 46 | 26.14 | ||||
| Limb salvage | 130 | 73.86 |