Real time spatial cluster detection using interpoint distances among precise patient locations

Table 4 Sensitivity to detect clustering with simulated clusters of three sizes.

		Percent of simulated outbreaks that exceeded a threshold
Alarm strategy	# extra visits	All seasons	Winter	Spring	Summer	Fall
M > 95^th percentile	10	15.40	1.29	13.28	41.56	5.18
	25	53.75	21.33	62.29	84.94	45.41
	40	78.35	57.43	84.45	94.63	76.20
M > 95^th percentile, by season	10	8.30	6.30	7.81	11.73	7.32
	25	57.41	47.09	60.34	65.52	56.36
	40	81.69	77.44	80.10	88.81	80.34
MN > 95^th percentile	10	20.93	13.87	21.43	32.69	15.52
	25	74.69	65.35	76.61	84.70	71.82
	40	91.35	87.06	92.42	95.33	90.46
N and MN rules	10	14.86	35.22	6.43	9.56	8.97
	25	65.12	74.67	57.68	67.17	61.38
	40	87.50	89.91	84.71	88.30	87.21

ISSN: 1472-6947