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Odds ratio for logistic regression

A logistic regression model was used to assess the association between CVD and obesity. P is defined to be the probability that the people have CVD.
log(P/(1-P)) = -2 + 0.7(obesity)

What is the odds ratio for CVD in persons who are obese as compared to not obese?

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See attached file.

The odds ratio is the natural log base, e, to the exponent, ...

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Step by step method for computing odds ratio for logistic regression