Table 2.
Univariate Failure Free Survival analysis of the risk factors
| Factor | HR (95% CI) | p value |
|---|---|---|
| Gender | ||
| (0) Male; (1) Female | 1.1 (0.4-2.9) | 0.763 |
| Age | ||
| (0) <50 y; (1) >50 y | 0.8 (0.3-2.8) | 0.725 |
| Previous Infection | ||
| (0) no; (1) yes | 0.7 (0.2-1.3) | 0.183 |
| Segment | ||
| (0) PR; (1) Others | 1.5 (0.6-3.9) | 0.409 |
| Previous RT | ||
| (0) yes; (1) no | 1.6 (0.4-7.1) | 0.513 |
| Prostheses | ||
| (0) Ag; (1) Ti | 0.5 (0.2-1.2) | 0.130 |
| Previous Failures | ||
| (0) 1; (1) 2 | 19,8 (7,8-50) | 0.001 |
Legend. HR: Hazard Ratio; 95%CI: 95% Confidence Interval; PR: proximal femur; Others: proximal tibia+distal femur and total femur; RT: radiation therapy.