Research Article
Accuracy of Preoperative Scoring Systems for the Prognostication and Treatment of Patients with Spinal Metastases
Table 4
Results of survival predictive accuracy and rate of agreement between predicted and actual survival for each scoring system.
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of 61 patients. Kappa of 1 indicates perfect agreement; a kappa of 0 indicates agreement equivalent to chance; <0: less than chance agreement; 0.01–0.20: slight agreement; 0.21–0.40: fair agreement; 0.41–0.60: moderate agreement; 0.61–0.80: substantial agreement; 0.81–0.99: almost perfect agreement. |