Table 4.
Comparison of overall survival data for various groups of patients with osteosarcoma
| Variable | No. | Mean survival (months) | 95 % confidence interval (months) | Survival at 1 year | P value | |
|---|---|---|---|---|---|---|
| Lower | Upper | |||||
| Gender | ||||||
| Male | 27 | 15.57 | 13.92 | 17.21 | 83.5 % | 0.667 |
| Female | 13 | 15.87 | 13.63 | 18.11 | 73.8 % | |
| Age | ||||||
| <20 years | 31 | 15.45 | 13.89 | 17.00 | 81.6 % | 0.327 |
| >20 years | 9 | 16.88 | 14.48 | 17.08 | 88.9 % | |
| Pulmonary metastasis | ||||||
| Yes | 19 | 14.63 | 12.58 | 16.69 | 72.4 % | 0.088 |
| No | 21 | 16.98 | 15.62 | 18.35 | 94.7 % | |
P value (log rank test) for comparison of survival data between groups. Significance p < 0.05 (univariate analysis of prognostic factors for overall survival)