Table 1 Sensitivity, specificity, diagnostic accuracy, positive and negative predictive values, and positive and negative diagnostic likelihood ratios of combination urinary leucocyte and nitrite in diagnosing UTI
Characteristics | 95% confidence interval | ||
|---|---|---|---|
Estimate | Lower CL | Upper CL | |
Sensitivity (%) | 79.40 | 75.24 | 83.55 |
Specificity (%) | 44.96 | 41.82 | 48.11 |
Diagnostic accuracy (%) | 54.41 | 51.68 | 57.11 |
Positive predictive value (%) | 35.29 | 32.01 | 38.56 |
Negative predictive value (%) | 85.24 | 82.15 | 88.32 |
Positive diagnostic likelihood ratio | 1.44 | 1.34 | 1.56 |
Negative diagnostic likelihood ratio | 0.46 | 0.37 | 0.57 |
Diagnostic odds ratio | 3.15 | 2.37 | 4.18 |