Spatial and temporal structure of typhoid outbreaks in Washington, D.C., 1906–1909: evaluating local clustering with the G i * statistic

Table 3 The total number of years any given grid cell was a member of a spatial cluster at specific distances(d) and for any given distance based on the G_i* values.

	Number of cells significant in years
Distance (m)	1	2	3	4	Total
150	138	2	0	0	140
250	86	0	0	0	86
500	87	0	0	0	87
750	87	2	0	0	89
1000	165	3	0	0	168
Number of cells significant regardless of distance	482	42	2	0	526

ISSN: 1476-072X