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Table 1 Logical structure of Knox index for observations

From: Exploratory space-time analysis of dengue incidence in Trinidad: a retrospective study using travel hubs as dispersal points, 1998–2004

 

Close in time

Not close in time

 

Close in distance

O1

O2

S1

Not close in distance

O3

O4

S2

 

S3

S4

N