Table 3.
Sensitivity, specificity, and positive (LR+) and negative (LR−) likelihood ratios of different thresholds of maximal depth of lung consolidation (in cm) to predict risk of relapse in feedlot cattle with clinical BP
| Criterion | Sensitivity | 95% CI | Specificity | 95% CI | LR+ | 95% CI | LR− | 95% CI |
|---|---|---|---|---|---|---|---|---|
| ≥0 | 100.0 | 86.3‐100.0 | 0.0 | 0.0‐3.1 | 1.0 | 1.0‐1.0 | ||
| >0 | 96.0 | 79.6‐99.9 | 18.5 | 12.0‐26.6 | 1.2 | 1.0‐1.3 | 0.2 | 0.03‐1.5 |
| >0.5 | 92.0 | 74.0‐99.0 | 21.0 | 14.1‐29.4 | 1.2 | 1.0‐1.4 | 0.4 | 0.10‐1.5 |
| >1 | 88.0 | 68.8‐97.5 | 26.9 | 19.2‐35.8 | 1.2 | 1.0‐1.4 | 0.5 | 0.1‐1.3 |
| >2 | 84.0 | 63.9‐95.5 | 35.3 | 26.8‐44.6 | 1.3 | 1.0‐1.6 | 0.5 | 0.2‐1.1 |
| >2.5 | 84.0 | 63.9‐95.5 | 37.8 | 29.1‐47.2 | 1.4 | 1.1‐1.7 | 0.4 | 0.2‐1.1 |
| >3 | 64.0 | 42.5‐82.0 | 58.0 | 48.6‐67.0 | 1.5 | 1.1‐2.2 | 0.6 | 0.4‐1.1 |
| >4 | 44.0 | 24.4‐65.1 | 76.5 | 67.8‐83.8 | 1.9 | 1.1‐3.2 | 0.7 | 0.5‐1.1 |
| >4.5 | 40.0 | 21.1‐61.3 | 76.5 | 67.8‐83.8 | 1.7 | 1.0‐3.0 | 0.8 | 0.6‐1.1 |
| >5a | 40.0 | 21.1‐61.3 | 85.7 | 78.1‐91.5 | 2.8 | 1.5‐5.4 | 0.7 | 0.5‐1.0 |
| >6 | 12.0 | 2.5‐31.2 | 98.3 | 94.1‐99.8 | 7.1 | 1.3‐40.5 | 0.9 | 0.8‐1.0 |
| >7 | 0.0 | 0.0‐13.7 | 100.0 | 96.9‐100.0 | 1.0 | 1.0‐1.0 |
a
Optimum cutoff point based on Youden index J (ie, max sensitivity + specificity).