| |
Sensitivity
|
Specificity
|
PPV
|
NPV
|
LR+
|
LR-
|
FP
|
FN
|
FP/FN trade-off*
|
|---|
|
Emergency department
|
|
<90 mmHg
|
12 (11-14)
|
99 (99-99)
|
22 (20-25)
|
98 (98-98)
|
15 (14-18)
|
0.89 (0.87-0.9)
|
871
|
1815
|
1 (ref)
|
|
<100 mmHg
|
19 (17-20)
|
98 (98-98)
|
15 (14-16)
|
98 (98-99)
|
9.4 (8.5-10)
|
0.83 (0.81-0.85)
|
2193
|
1679
|
10
|
|
<110 mmHg
|
27 (25-29)
|
94 (94-95)
|
8 (8-9)
|
99 (99-99)
|
4.8 (4.5-5.2)
|
0.78 (0.76-0.8)
|
6116
|
1512
|
17
|
|
<120 mmHg
|
36 (33-38)
|
87 (87-87)
|
5 (5-5)
|
99 (99-99)
|
2.7 (2.6-2.9)
|
0.74 (0.72-0.76)
|
14329
|
1331
|
28
|
|
Ambulance
|
|
<90 mmHg
|
10 (7-13)
|
99 (98-99)
|
13 (9-18)
|
98 (98-98)
|
6.7 (4.8-9.4)
|
0.92 (0.88-0.95)
|
228
|
321
|
1 (ref)
|
|
<100 mmHg
|
18 (14-22)
|
97 (96-97)
|
11 (8-13)
|
98 (98-98)
|
5.2 (4.1-6.5)
|
0.85 (0.81-0.89)
|
540
|
292
|
11
|
|
<110 mmHg
|
27 (22-32)
|
92 (92-93)
|
7 (6-9)
|
98 (98-98)
|
3.4 (2.9-4.1)
|
0.79 (0.74-0.84)
|
1214
|
260
|
16
|
|
<120 mmHg
|
37 (32-43)
|
84 (83-84)
|
5 (4-6)
|
98 (98-99)
|
2.3 (2-2.6)
|
0.75 (0.69-0.81)
|
2540
|
223
|
24
|
|
MECU
|
|
<90 mmHg
|
16 (14-19)
|
96 (96-97)
|
21 (17-24)
|
95 (95-95)
|
4.3 (3.6-5.2)
|
0.87 (0.84-0.9)
|
440
|
588
|
1 (ref)
|
|
<100 mmHg
|
25 (22-29)
|
93 (92-93)
|
18 (16-21)
|
95 (95-96)
|
3.6 (3.1-4.2)
|
0.8 (0.77-0.84)
|
813
|
524
|
6
|
|
<110 mmHg
|
34 (31-38)
|
88 (87-88)
|
14 (13-16)
|
96 (95-96)
|
2.7 (2.5-3.1)
|
0.75 (0.71-0.79)
|
1443
|
462
|
8
|
|
<120 mmHg
|
43 (40-47)
|
79 (78-80)
|
11 (10-12)
|
96 (95-96)
|
2.1 (1.9-2.3)
|
0.72 (0.67-0.76)
|
2417
|
398
|
10
|
-
*The FP/FN trade-off expresses the additional number of false positive results for one less false negative result that comes with increasing the systolic blood pressure threshold from 90 mmHg. Values in parentheses are 95% confidence intervals. PPV, positive predictive value; NPV, negative predictive value; LR+, positive likelihood ratio; LR-, negative likelihood ratio; FP, false positives; FN, false negatives; MECU, mobile emergency care unit.
