Provide a 95% Cl for the true OR corresponding to your...

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Key Concepts

Confidence Interval (CI)

A confidence interval is a range of values, derived from the sample data, that is likely to contain the true population parameter with a certain level of confidence. A 95% confidence interval, for example, implies that if the same study were repeated many times, approximately 95% of the calculated intervals would be expected to contain the true parameter value.

Odds Ratio (OR)

The odds ratio is a measure of association between an exposure and an outcome, indicating the odds of the outcome occurring in the presence of the exposure compared to the absence of the exposure. It is commonly used in case-control studies and logistic regression analyses to quantify the strength and direction of the relationship between variables.

Logarithmic Transformation for OR

When constructing a confidence interval for an odds ratio, a logarithmic transformation is often applied to stabilize the variance and make the interval symmetric. The interval is computed on the log scale and then transformed back to the original scale via exponentiation, ensuring that the confidence limits for the odds ratio remain positive.

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