True positive False negative False positive True negative
Notching,  1st trimester Pre-eclampsia 64
55
26 		3
1
3 		19
12
6 		22
9
12
Notching, 2nd trimester Pre-eclampsia 16
10
8 		30
15
15 		21
8
16 		67
28
39
PI  ≥ 2.5, 1st trimester Pre-eclampsia 2
2
0 		7
4
3 		5
4
1 		35
17
18
PI  ≥ 2.5,   2nd trimester Pre-eclampsia 3
2
1 		43
22
21 		2
2
0 		86
35
51
PI ≥ 2.5 + Notching, 1st trimester Pre-eclampsia 2
2
0 		7
4
3 		5
4
1 		35
17
18
PI ≥ 2.5 + Notching, 2nd trimester Pre-eclampsia 2
1
1 		44
23
21 		1
1
0 		87
36
51
Notching and/or PI ≥ 2.5,  1st trimester Pre-eclampsia 6
5
1 		3
1
2 		19
12
7 		21
9
12
Notching and/or PI ≥ 2.5, 2nd trimester Pre-eclampsia 17
11
6 		29
13
16 		22
10
12 		66
27
39
4Total population
5Group Prior PE
6Group C. H.
Table 2: True positives, false negatives, false positives, ture negatives.
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