We conducted a trial with a one-way treatment structure with 2 trt levels. We applied the two treatments to pens of pigs in a randomized block design. However, we ended up with 45 pens, thus one of the blocks out of 23 blocks had only 1 treatment. How do I code this unbalanced incomplete block desing in Proc MIXED? Or is the code exactly the same as a RCBD and there is something we need to compute on the datalines? Thanks,
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