Table 8 Accuracy of laboratory investigations for diagnosis of UTI
From: Incidence and risk factors of urinary tract infection in neonatal sepsis
Variable | Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value (%) | Accuracy (%) | Cut off point |
|---|---|---|---|---|---|---|
TLC | ||||||
< 4000 | 81.80 | 13.50 | 10.50 | 85.70 | 21 | 3.95 |
> 20,000 | 18.20 | 78.70 | 9.60 | 88.60 | 72 | 19.90 |
PLT | 44.50 | 72.60 | 16.70 | 91.40 | 69.50 | 101.50 |
I/T ratio | 66.70 | 31.70 | 10.80 | 88.50 | 55 | 0.25 |
CRP | 66.70 | 33.30 | 11 | 89 | 37 | 37.30 |
RBS | ||||||
< 40 | 100 | 0 | 100 | 0 | 50 | 38 |
> 180 | 27.30 | 70.80 | 10.40 | 88.70 | 66 | 179 |
Expert panel criteria | 90.90 | 34.80 | 14.70 | 96.90 | 62.10 | 5.50 |