Table 2.

Screening characteristics for mean PI > 1.66 and/or bilateral Notches at 20 w (screen positive rate: 9.2%).

	S (%)	E (%)	PPV (%)	NPV (%)	LR+	LR−
PE	48.0	91.3	6.5	99.3	5.5	0.18
PE < 32 w	75.0	91.0	2.7	99.9	8.3	0.12
PE ≥ 32 w	38.9	91.0	3.8	99.4	4.3	0.23
IUGR	52.2	91.3	6.5	99.4	6.0	0.17
IUGR < 32 w	72.7	91.1	4.3	99.8	8.2	0.12
IUGR ≥ 32 w	33.3	90.9	2.2	99.6	3.7	0.27
PE and/or IUGR < 32	73.7	91.2	5.0	99.8	8.4	0.12
PE and IUGR	65.2	91.0	2.7	99.9	7.2	0.14
PE and IUGR < 32 s	73.3	90.9	2.0	99.9	8.1	0.12
PE and IUGR ≥ 32 s	50.0	90.8	0.7	99.9	5.5	0.18