Page 39 - Predicting survival in patients with spinal bone metastasesL
P. 39
Survival curves were estimated by using the Kaplan-Meier method. Influence of the risk factors was assessed by employing log rank tests for univariate analysis and for multivariate Cox analysis a backward stepwise procedure was used. A p-value of <0.05 was considered statistically significant. All analyses were performed using SPPS 18.0, SPSS Inc., Chicago IL.
RESULTS
Survival
III
The overall median survival was 10.7 months (0.2-107.5 months) (figure 1). Eighty patients (75%) died during follow-up, with a median survival of 6.5 months (0.2- 106.8 months). Twenty-five patients (24%) died within 3 months after surgery and 13 patients (12%) died 3 to 6 months after surgery.
Figure 1. Overall survival.
The highest median survival time was found in patients with breast cancer (34.7 months), followed by kidney (14.9 months) and prostate cancer (9.3 months). Patients with colon cancer had the lowest median survival (1.7 months).
SURGICAL COHORT
37
