SAS: Dropping a treatment from a 3-way study [Software]

posted by d_labes  – Berlin, Germany, 2013-08-02 11:06 (4280 d 10:23 ago) – Posting: # 11165
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Hi John!

Full ACK with Helmut's suggestion. Seems he has basic SAS speak knowledge acquired :cool:.
If you set the values of one treatment just to missing SAS nevertheless tries to estimate the treatment effect for it with is of course missing. Result: Errors.

Also full ACK with the estimate statement. After removing one treatment it has only two entries.

BTW: Be careful with this estimate. The factors +1, -1 and zero depend on the coding of our treatment factor. It's lexicographic. T1, T2 come after R if you have coded as usual T1, T2, R.

Regards,

Detlew

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