Quantifying Proteinuria in Hypertensive Disorders of Pregnancy

Table 3

Diagnostic test characteristics at different dipstick grades to predict proteinuria of 300 mg/day or more.

Cutoff values	1+	2+	3+	4+
Sensitivity (%)	59	37.2	21.8	22.6
Specificity (%)	66.7	100	100	100
PPV (%)	85.2	100	100	100
NPV (%)	33.3	32.9	28.2	50
Accuracy (%)	60.8	52	40.2	56.4
Positive likelihood ratio (LR+)^#	1.77	18.22	10.68	11.06
Negative likelihood ratio (LR−)^#	0.62	0.64	0.8	0.79
Odd’s ratio^#	2.88	28.41	13.38	14

0.5 was added to empty cells to calculate ratios.