Periosteal Osteosarcoma: A Single-Institutional Study of Factors Related to Oncologic Outcomes
Table 1
Factors assessed for the effect on survival.
Overall survival
Event-free survival
HR
CI
value
HR
CI
value
Age (continuous variable)
0.920
0.72–1.175
0.5025
0.9131
0.758–1.10
0.340
Size (continuous variable)
0.864
0.5515–1.354
0.5243
0.738
0.513–1.06
0.103
Use of chemotherapy
2.90
0.3125–26.83
0.3493
1.443
0.275–7.563
0.664
Medullary involvement
1.01
0.1637–6.189
0.9944
2.151
0.411–11.27
0.365
Presence of high-grade disease
1.00 × 109
0–∞
0.9992
2.278
0.272–19.1
0.448
Local recurrence
2.785
0.286–27.13
0.3778
—
—
—
Site (axial versus appendicular)
2.699
0.4407–16.52
0.2826
1.415
0.269–7.44
0.682
Hazard ratios (HRs) with confidence interval (CI) and values calculated using the Cox proportional-hazards method with each factor being assessed individually.
