Go to content

A brief note on overlapping confidence intervals


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.



Austin PC, Hux JE. J Vasc Surg. 2002; 36(1):194-5.

View Source

Contributing ICES Scientists

Associated Sites