[amelia] AmeliaView database format

I could use some assistance in using AmeliaView. I have data from a clinical trial where 57 participants were randomized to one of two treatments. I am currently looking at data from measurements taken at three time points – pretreatment, midtreatment, and posttreatment and would like to impute missing values from those who dropped out or failed to complete assessments (i.e., non-random, non-ignorable missing data). The input data format is SPSS. I have been getting a range of error messages, but I think they stem from not organizing the data file correctly. Below is a partial illustration of the current organization in SPSS (Dep=score on a depression measure, Neg=score on a measure of negative thinking), which does not work: Participant Treatment Dep-pre Dep-mid Dep-post Neg-pre Neg-mid Neg-post 1 1 28 20 15 80 65 50 2 2 25 23 20 85 80 80 3 1 30 25 80 70 4 2 20 70 . . . Any thoughts on creating a data frame the corresponds to the elements in Amelia View’s _Variables Dialog_ and _Time Series Cross Sectional Dialog_ options would be much appreciated. Sincerely, Scott - Amelia mailing list served by Harvard-MIT Data Center [Un]Subscribe/View Archive: http://lists.gking.harvard.edu/?info=amelia More info about Amelia: http://gking.harvard.edu/amelia