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The results of CONTRAST and ESTIMATE statements in PROC MIXED will be incorrect if the following conditions are met:

1. there is no overall subject in the analysis (the DIMENSIONS table shows there is 1 subject in your analysis)
2. one or more RANDOM statement(s) in the model have a SUBJECT= option
3. there are coefficients for the random effects in an ESTIMATE or CONTRAST statement

All three conditions must be met for the results of the CONTRAST or ESTIMATE statement to be incorrect.

To circumvent the problem, rewrite your RANDOM statements so that the first two conditions are not met. For example, rewrite your RANDOM statements so they do not involve SUBJECT= effects.

Select the Hot Fix tab in this note to access the hot fix for this issue.

Operating System and Release Information

A fix for Release 8.2 (TS2M0) for this issue is available at:

A fix for Release 8.2 (TS2M0) with Asian Language Support (DBCS) for this issue is available at:

A fix for SAS 9.1.3 (9.1 TS1M3) for this issue is available at:

A fix for SAS 9.1.3 (9.1 TS1M3) with Asian Language Support (DBCS) for this issue is available at :