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Table 2 Number of agreements or disagreements between two individuals based on a binary variable consisting of presence or absence of a particular attribute.

From: Cluster analysis for identifying sub-groups and selecting potential discriminatory variables in human encephalitis

  Individual i  
  Present (+) Absent (-) Totals
Individual j Present (+)
Absent (-)
a
c
b
d
a+b
c+d
  Totals a+c b+d Ν