Predictive ability of the OFS based on the national and local dataset for 30-day mortality
| Dataset | AUC (95% CI) | Sensitivity (95% CI) | Specificity (95% CI) | P value for difference in AUC |
| National | 0.72 (0.72 to 0.73) | 0.80 (0.79 to 0.81) | 0.54 (0.53 to 0.55) | Reference |
| Local | 0.77 (0.74 to 0.80) | 0.84 (0.78 to 0.89) | 0.56 (0.49 to 0.61) | 0.006 |
The OFS was developed using the national dataset and validated using the local dataset.
AUC, area under the receiver-operating characteristic curve; OFS, Orthopedic Hip Frailty Score.