Table 2:
Complete Parameter Estimates for Models with Top 5 Area Under the Receiver Operating Characteristic curve (AUROC) Performance
| Model | Test Rule | AUROC |
|---|---|---|
| 1 | ≥trace leukocyte esterase OR positive nitrites | 0.72 |
| 2 | ≥1+ leukocyte esterase OR positive nitrites | 0.75 |
| 3 | ≥2+ leukocyte esterase OR positive nitrites | 0.76 |
| 4 | ≥5 WBCs OR positive nitrites | 0.70 |
| 5 | ≥10 WBCs OR positive nitrites | 0.75 |
| 6 | ≥20 WBCs OR positive nitrites | 0.77 |
| 7 | ≥5 WBCs OR ≥trace leukocyte esterase OR positive nitrites | 0.64 |
| 8 | ≥10 WBCs OR ≥1+ leukocyte esterase OR positive nitrites | 0.69 |
| 9 | ≥20 WBCs OR ≥2+ leukocyte esterase OR positive nitrites | 0.75 |
| 10 | ≥5 WBCs OR ≥Trace leukocyte esterase OR positive nitrites OR ≥5 bacteria/hpf | 0.58 |
| 11 | ≥10 WBCs OR ≥1+ leukocyte esterase OR positive nitrites OR ≥5 bacteria/hpf | 0.61 |
| 12 | ≥20 WBCs OR ≥2+ leukocyte esterase OR positive nitrites OR ≥5 bacteria/hpf | 0.63 |
| 13 | ≥trace leukocyte esterase AND positive nitrite | 0.66 |
| 14 | ≥5 WBCs AND positive nitrite | 0.61 |
| 15 | ≥10 WBCs AND positive nitrite | 0.59 |
| 16 | ≥trace leukocyte esterase AND positive nitrite PLUS ≥5 bacteria/hpf | 0.63 |
| 17 | ≥5 WBC AND positive nitrite PLUS ≥5 bacteria/hpf | 0.61 |
| 18 | ≥10 WBC AND positive nitrite PLUS ≥5 bacteria/hpf | 0.59 |
| Model | Test Rule | AUROC | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|---|
| 6 | ≥20 WBCs OR positive nitrites | 0.77 | 0.79 | 0.75 | 0.60 | 0.88 |
| 9 | ≥20 WBCs OR ≥2+ leukocyte esterase OR positive nitrites | 0.75 | 0.86 | 0.65 | 0.56 | 0.90 |
| 3 | ≥2+ leukocyte esterase OR positive nitrites | 0.76 | 0.73 | 0.80 | 0.59 | 0.88 |
| 5 | ≥10 WBCs OR positive nitrites | 0.75 | 0.86 | 0.64 | 0.53 | 0.90 |
| 2 | ≥1+ leukocyte esterase OR positive nitrites | 0.75 | 0.85 | 0.65 | 0.49 | 0.91 |
WBC- white blood cell, hpf- high powered field, PPV-positive predictive value, Negative predictive value