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Table 4 Results of cluster analyses

From: Effects of health intervention programs and arsenic exposure on child mortality from acute lower respiratory infections in rural Bangladesh

  Observed deaths Expected deaths Radius (km) Relative risk Likelihood ratio p value
Unadjusted (Fig. 4)
 Cluster 1 141 229.9 5.4 0.53 26.4 0.000
 Cluster 2 259 197.8 3.5 1.45 11.8 0.051
Unadjusted, max size ≤10 % of population at risk (Fig. 5)
 Cluster 1 36 77.8 2.8 0.44 15.2 0.002
 Cluster 2 0 14.3 0.9 0.00 14.4 0.003
 Cluster 3 96 58.0 1.5 1.74 11.3 0.061
Treatment area adjusted (Fig. 6)
 Cluster 1 22 52.0 1.3 0.41 11.6 0.046
Model adjusted (no figure)       
  No statistically significant clusters found
  1. Spatial cluster analysis of childhood deaths from acute lower respiratory infections (ALRI) in Matlab, Bangladesh, 1989–1996. Results are from the spatial scan statistic implemented in SaTScan and include only statistically significant clusters at the α = 0.1 level