Yes, there are multiple ways to do this: With SAS 9.3, you can use GROUPDISPLAY=Cluster with scatter plots too. This is the easiest and most scalable. See blog article with Mean Change plot. With SAS 9.2, if your data is in multi-column format (one column for each treatment), you can use DiscreteOffset in GTL. See my blog article on DiscreteOffsets. This will work for multiple treatments. With SAS 9.2 SGPLOT, you can use axis offsets if you have only two treatments to acheive the separation. Map one treatment to X axis, other to X2, and then use a small offset on X2. It will separate the two markers, thought one will be slightly off center.
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