Table 3.

Performance metrics for sites grouped by different alert levels

	Alert level 3	Alert level 2–3	Alert level 1–3	Alert level 0
fpr	0.14	0.22	0.25	0.75
Zero scenario tpr	0.95	0.99	0.99	0.01
75% under-reporting tpr	0.80	0.90	0.91	0.09
67% under-reporting tpr	0.72	0.84	0.86	0.14
50% under-reporting tpr	0.50	0.64	0.66	0.36
25% under-reporting tpr	0.31	0.37	0.39	0.61

fpr false positive rate, tpr true positive rate