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Table 5 Cluster and clustering in residuals

From: Environmental and demographic risk factors for campylobacteriosis: do various geographical scales tell the same story?

  Smallest Munici-pality Census consolidated subdivision Agri-culture CLSC Census division Water-shed
  (n=1119) (n=1063) (n=903) (n=319) (n=155) (n=97) (n=71)
Cluster (scan test)       
Principal cluster
Meana inside 79.97 74.57 77.99 None 10.37 12.35 None
Meana outside −0.22 −0.14 −0.091   −2.49 −2.6  
Number of units 3 3 2   29 17  
Area (km2) 219 219 203   42993 40052  
Locationc A A A   B B  
P-value <0.01 <0.01 0.04   <0.01 0.02  
Clustering        
Moran’s
Neighbors (km)b 27 29 19 30 18 15 34
Estimate −0.06 −0.02 −0.11 −0.06 −0.02 0.09 0.02
P-value 0.99 0.98 0.99 0.90 0.63 0.34 0.42
  1. Regression coefficients (standard errors) of conditional autoregressive models predicting the annual incidence of campylobacteriosis per 100,000 people in Quebec, Canada, 1996–2006.
  2. a Mean of residuals.
  3. b Pairs of units with population centers within this distance were considered neighbors.
  4. c A similar letter indicates a similar location for the cluster. See Figure 1 for an indication of the exact cluster location.