Table 7. Deaths in the mortality-based clusters in 1440.

Grouped death clusters	Higher RR	Lower RR	Dijon
Total	13	750	1,818
Deaths	9	25	78
p	Fischer test, p < 10−9	Chi-square test, p < 10−2	X
Death rate	ND	3.3%	4.3%

Legend: Line 1: Grouped death clusters (or Dijon). Line 2: total number of households (deaths and survivors). Line 3: number of deaths (grouped and non-grouped). Line 4: result of the statistical test comparing the cluster(s) with the rest of the city. Line 5: death rate as percent. Column 2: pooled data from the 2 clusters of higher grouped death relative risk. Column 3: data from the cluster of lower grouped death relative risk. Column 4: data for the whole city. ND: not done. For each cluster, data of the control (rest of the city) can be computed by subtraction from the data of the whole city.