Hello,

Thank you to those of you who responded to my earlier posts, but unfortunately, I am stuck. I have 10 subjects and multiple conditions, so I have a repeated measures ANOVA with one dependent variable. A reviewer asked me to consider another measured value (he termed it a "covariate") in my analsyis. I believe that I want to do an analysis of covariance so I can basically in account for the effects of my covariate on my dependent variable and still see if there is significance of my dependent variable for the various conditions.

**Q. What are the steps to performing this analysis? **

a) **How do I arrange my data?** For my repeated measures ANOVA I had a column for every factor, a row for each subject. When I add the covariate, do I add these as extra rows or extra columns? When I try extra columns, I have too many factors for the experimental units.

b) **What analysis am I looking for?** Part of the reason I am stuck here is because I am not sure how to answer a) above.

Please help! I am really stuck here and am unaware of where else to turn. If you have any suggestions of other resources (or perhaps other forums?) where I may be able to find the answer, I would appreciate that as well. Thank you!