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Clinical relevance of Radiographic Union Score for HUmeral fractures (RUSHU) < 8 as a predictor of non-union (using all reviewers’ scores).
| Union | Non-union | Total | |
|---|---|---|---|
| RUSHU ≥ 8 | 113 | 0 | 113 |
| RUSHU < 8 | 40 | 18 | 58 |
| Total | 153 | 18 | 171 |
Chi squared test p < 0.001.
Sensitivity 100% (95%CI 81.5, 100), Specificity 73.9% (95%CI 66.1, 80.6), PPV 31.0% (95%CI 19.5, 44.5), NPV 100% (95%CI 96.8, 100), ROC AUC 0.87 (95%CI 0.83, 0.90).
