Problem Note 70887: The MIXED procedure might produce incorrect results when you specify certain model combinations
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PROC MIXED might produce incorrect results when the following conditions are met:
- You specify the DDFM=KR, DDFM=KR2, or DDFM=SAT option in the MODEL statement.
- You specify the TYPE=FA(q), TYPE=FA0(q), or TYPE=FA1(q) option in the RANDOM statement when t=1 regardless of the q value (where t is the dimension of the G matrix).
- At least one of the following conditions is also met:
- You specify the OUTP= option in the MODEL statement.
- You specify the SOLUTION option in the RANDOM statement.
- You specify a CONTRAST or ESTIMATE statement involving random effects.
There is no workaround for this issue. A hotfix is planned for this issue.
Operating System and Release Information
| Product Family | Product | System | Product Release | SAS Release | ||
| Reported | Fixed* | Reported | Fixed* | |||
| SAS System | SAS/STAT | Windows 7 Enterprise x64 | 9.3 | 9.3 TS1M0 | ||
| Windows 7 Home Premium 32 bit | 9.3 | 9.3 TS1M0 | ||||
| Windows 7 Home Premium x64 | 9.3 | 9.3 TS1M0 | ||||
| Windows 7 Professional 32 bit | 9.3 | 9.3 TS1M0 | ||||
| Windows 7 Professional x64 | 9.3 | 9.3 TS1M0 | ||||
| Windows 7 Ultimate 32 bit | 9.3 | 9.3 TS1M0 | ||||
| Windows 7 Ultimate x64 | 9.3 | 9.3 TS1M0 | ||||
| Windows Vista | 9.3 | 9.3 TS1M0 | ||||
| Windows Vista for x64 | 9.3 | 9.3 TS1M0 | ||||
| 64-bit Enabled AIX | 9.3 | 9.3 TS1M0 | ||||
| 64-bit Enabled HP-UX | 9.3 | 9.3 TS1M0 | ||||
| 64-bit Enabled Solaris | 9.3 | 9.3 TS1M0 | ||||
| HP-UX IPF | 9.3 | 9.3 TS1M0 | ||||
| Linux | 9.3 | 9.3 TS1M0 | ||||
| Linux for x64 | 9.3 | 9.3 TS1M0 | ||||
| Solaris for x64 | 9.3 | 9.3 TS1M0 | ||||
| Windows 7 Enterprise 32 bit | 9.3 | 9.3 TS1M0 | ||||
| Microsoft Windows XP Professional | 9.3 | 9.3 TS1M0 | ||||
| Microsoft Windows Server 2008 for x64 | 9.3 | 9.3 TS1M0 | ||||
| Microsoft Windows Server 2008 R2 | 9.3 | 9.3 TS1M0 | ||||
| Microsoft Windows Server 2008 | 9.3 | 9.3 TS1M0 | ||||
| Microsoft Windows Server 2003 for x64 | 9.3 | 9.3 TS1M0 | ||||
| Microsoft Windows Server 2003 Standard Edition | 9.3 | 9.3 TS1M0 | ||||
| Microsoft Windows Server 2003 Enterprise Edition | 9.3 | 9.3 TS1M0 | ||||
| Microsoft Windows Server 2003 Datacenter Edition | 9.3 | 9.3 TS1M0 | ||||
| Microsoft® Windows® for x64 | 9.3 | 9.3 TS1M0 | ||||
| z/OS | 9.3 | 9.3 TS1M0 | ||||
A fix for this issue for SAS/STAT 15.3 is available at:
https://tshf.sas.com/techsup/download/hotfix/HF2/L9L.html#70887| Type: | Problem Note |
| Priority: | alert |
| Topic: | Analytics ==> Mixed Models SAS Reference ==> Procedures ==> MIXED |
| Date Modified: | 2025-07-23 10:29:40 |
| Date Created: | 2024-07-11 11:46:21 |