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Estudos de caso-controle<br />

Análise dos dados<br />

ODDS RATIO =<br />

a<br />

c<br />

b<br />

d<br />

CHANCE/ODDS = possibilidade de ocorrência de um evento<br />

possibilidade da não ocorrência do evento<br />

OR = a x d<br />

b x c<br />

Exposição<br />

Doença / evento<br />

Presente Ausente<br />

Presente a b<br />

Ausente c d

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