Table 1:

Performance of Individual Urinalysis Parameters for Predicting Significant Bacteriuria

Leukocyte Esterase	≥Trace	≥1+	≥2+
Sensitivity	0.87	0.78	0.58
Specificity	0.55	0.67	0.83
PPV	0.43	0.48	0.57
NPV	0.91	0.89	0.84
WBC Count/hpf	≥5	≥10	≥20
Sensitivity	0.78	0.61	0.41
Specificity	0.55	0.73	0.86
PPV	0.32	0.38	0.44
NPV	0.90	0.87	0.84
Nitrite	Positive
Sensitivity	0.41
Specificity	0.95
PPV	0.75
NPV	0.80
Bacteria Count/hpf	5–50	>50
Sensitivity	0.93	0.77
Specificity	0.37	0.74
PPV	0.40	0.57
NPV	0.92	0.88
Yeast Count/hpf	Positive
Sensitivity	0.60
Specificity	0.95
PPV	0.53
NPV	0.96

WBC- white blood cell, hpf- high powered field, PPV-positive predictive value, negative predictive value