Likelihood ratios for different levels of confidence of diagnosis
| Lymph nodes of 1 cm or more | Likelihood ratio | 95% CI | Post-test probability (%) |
|---|---|---|---|
| All viewers, AP plus lateral views, prevalence of lymphadenopathy of 46%. | |||
| Present, confident | 2.92 | 1.97 to 3.87 | 71.3 |
| Present, equivocal | 1.31 | 0.97 to 1.66 | 52.7 |
| Absent, equivocal | 0.72 | 0.53 to 0.92 | 38.0 |
| Absent, confident | 0.28 | 0.16 to 0.39 | 19.3 |