Table 3.
Usefulness of likelihood ratios.
| Usefulness | Likelihood ratio (+) | Likelihood ration (−) |
| Conclusive | >10 | <0.1 |
| Moderately helpful | 5–10 | 0.1–0.2 |
| Possibly helpful | 2–5 | 0.5–0.2 |
| Not helpful | 1–2 | 0.5–1 |
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