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Clinical relevance of Radiographic Union Score for HUmeral fractures (RUSHU) < 8 as a predictor of non-union (using first reviewer's scores only).
| Union | Non-union | Total | |
|---|---|---|---|
| RUSHU ≥ 8 | 40 | 0 | 40 |
| RUSHU < 8 | 11 | 6 | 17 |
| Total | 51 | 6 | 57 |
Chi squared test p < 0.001.
Sensitivity 100% (95%CI 54.1, 100), Specificity 78.4% (95%CI 64.7, 88.7), PPV 35.3% (95%CI 14.2, 61.7), NPV 100% (95%CI 91.2, 100), ROC AUC 0.89 (95%CI 0.84, 0.95).
