Table 3.

Coordinates of ROC curve

Positive if greater than or equal To	Sensitivity (True positive)	1-Specificity (False positive)
1.00	1.000	1.000
1.50	1.000	.760
2.50	1.000	.740
3.50	1.000	.720
4.50	1.000	.660
5.50	.983	.580
6.50	.983	.560
7.50	.966	.520
8.50	.948	.520
9.50	.948	.500
12.00	.948	.480
14.50	.948	.460
15.50	.948	.440
16.50	.948	.420
17.50	.948	.400
18.50	.948	.380
19.50	.948	.360
22.00	.931	.340
24.50	.897	.340
25.50	.879	.320
26.50	.879	.300
29.50	.862	.280
32.50	.845	.280
33.50	.845	.260
35.50	.828	.260
39.50	.810	.260
43.50	.810	.240
45.50	.793	.240
47.00	.776	.240
50.00	.741	.240
53.50	.741	.200
56.00	.724	.200
58.50	.707	.200
61.00	.707	.180
66.00	.707	.160
70.50	.690	.160
72.00	.690	.140
80.00	.672	.140
88.00	.655	.140
90.00	.638	.140
95.50	.638	.120
106.00	.621	.120
119.00	.603	.120
126.50	.586	.120
128.00	.586	.100
150.50	.569	.100
179.50	.552	.100
200.50	.517	.100
220.00	.500	.100
226.50	.483	.100
239.00	.483	.080
255.00	.466	.080
264.50	.448	.080
313.50	.431	.080
378.00	.414	.080
404.50	.397	.080
425.50	.379	.080
443.50	.362	.080
448.00	.345	.080
452.00	.328	.080
472.50	.310	.080
514.50	.293	.080
543.00	.276	.080
579.50	.259	.080
644.50	.259	.060
689.50	.241	.060
734.00	.224	.060
787.50	.207	.060
867.50	.190	.060
950.00	.172	.060
980.50	.155	.060
1021.00	.155	.040
1092.50	.138	.040
1303.50	.138	.020
1479.50	.138	.000
1487.50	.121	.000
1494.00	.103	.000
1611.00	.086	.000
2439.50	.069	.000
3173.00	.052	.000
3665.00	.034	.000
5964.00	.017	.000
7792.00	.000	.000

Bold text indicates the cut-off that is used to differentiate active infection from exposure.