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Cut-off values of venous diameter to distinguish between clinical grades of varicocele.
| Varicocele WHO grade (physical exam) | Best Measurement | Cut-off value (mm) | Sensitivity (%) | Specificity (%) | AUC |
|---|---|---|---|---|---|
| 0 vs. 1–3 | Diameter at rest | 3.0 | 79 | 42 | 0.67 |
| 1 vs. 2 | Diameter during Valsalva | 5.7 | 71 | 33 | 0.57 |
| 2 vs. 3 | Diameter at rest | 3.6 | 71 | 58 | 0.65 |
WHO, World Health Organization; AUC, area under the curve.
