Table 1

 Urine screening using different infection associated marker combinations

Marker combinationSignificant cultures missedPercentage screened outNPVSensitivity (%)Specificity (%)
Sensitivity = true positives/(true positives+false negatives) ×100; specificity = true negatives/(true negatives+false positives) ×100; negative predictive value (NPV) = true negative/(true negative+false negative) ×100.
B, blood; L, leucocyte esterase; N, nitrite; P, protein.
L/N/B/P316.398.398.319.2
L/B/P416.897.897.819.8
L/N/B525.798.297.230.2
L/N/P628.298.096.733.1
N/B/P1827.994.090.031.5
L/N1748.096.790.655.8