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Table 1 Proportions of exposed/unexposed persons and outcomes (2 × 2 table)

From: Calculating confidence intervals for impact numbers

  

Status of disease/death from disease

 
  

yes (j = 1)

no (j = 0)

∑

Exposure

exposed (i = 1)

Ï€11

Ï€10

π1•

 

unexposed (i = 0)

Ï€01

Ï€00

π0•

 

∑

π•1

π•0

1