Table 2.
Measures of urinalysis test accuracy across entire patient cohort.
| Entire Sample Cohort (N = 241) | ||||||
|---|---|---|---|---|---|---|
| Sensitivity | Specificity | PPV | NPV | DOR [95% CI] | P | |
| Nitrites | 27.7% | 93.5% | 69.7% | 70.6% | 5.52 [2.48–12.3] | 0.000005 |
| LE | 90.5% | 29.0% | 40.9% | 84.9% | 3.89 [1.73–8.71] | 0.000479 |
| Nitrites AND1 LE | 26.5% | 93.5% | 68.8% | 70.4% | 5.23 [2.34–11.7] | 0.000011 |
| Nitrites OR2 LE | 91.7% | 28.6% | 41.2% | 86.3% | 4.4 [1.88–10.29] | 0.000244 |
| WBC | 90.9% | 34.8% | 44.3% | 87.0% | 5.34 [2.27–12.54] | 0.000027 |
| Nitrites AND WBC | 25.3% | 95.5% | 75.0% | 70.6% | 7.21 [2.92–17.83] | 0.000001 |
| LE and WBC | 83.1% | 47.7% | 46.3% | 83.9% | 4.5 [2.33–8.67] | 0.000002 |
| Blood | 73.8% | 33.5% | 37.6% | 70.3% | 1.42 [0.80–2.57] | 0.242 |
| RBC | 76.7% | 27.6% | 35.4% | 69.9% | 1.25 [0.61–2.58] | 0.545 |
| Protein | 71.4% | 35.5% | 37.5% | 69.6% | 1.38 [0.77–2.45] | 0.280 |
| Ketones | 16.7% | 85.2% | 37.8% | 65.3% | 1.15 [0.56–2.37] | 0.711 |
PPV (positive predictive value), NPV (negative predictive value), DOR (diagnostic odds ratio), LE (leukocyte esterase), WBC (white blood cells), RBC (red blood cells).
1
Both tests positive.
2
One or both tests positive.