A brief note on overlapping confidence intervals.
Level V
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- Record sourced from PubMed, PMID 12096281.
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Abstract
Clinical researchers frequently assess the statistical significance of the difference between two means by examining whether the two 95% confidence intervals overlap. The purpose of this brief communication is to illustrate that the 95% confidence intervals for two means can overlap and yet the two means can be statistically significantly different from one another at the alpha = 0.05 level.
Medical subject headings
- Confidence Intervals