what is the correct method and SAS procedure to calculate the 95% confidence interval of the difference of rates in 2 groups?
For example, group A has 28 subjects and 20 improved, group B has 14 subjects and 8 improved. So the improvement rate for group A is 20/28=71.4%, improvement rate for group B is 8/14=57.1%. The difference of rates is 0.14. what is the right way to calculate 95% CI for that?
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.