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1.Similar
to the risk ratio, here are the guidelines for calculating a confidence
interval for 2 independent samples and the odds ratio as the parameter
of interest.
2.Note
that calculation of the confidence interval requires the additional step
of performing a calculation in natural logarithm scale, and then doing a
transformation.
3.In
this example, the 95% confidence interval for the odds ratio ranges from
0.87 to 1.47.
4.Since
the 95% confidence interval includes the null value of 1.0, it is
plausible (from these data) that smokers are at either lower or higher
risk of cardiovascular disease (CVD) compared to non-smokers.
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