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SUPPORT / SAMPLES & SAS NOTES
 

Support

Problem Note 48111: PROC SURVEYMEANS may produce incorrect variance estimates with poststratification

DetailsHotfixAboutRate It

When poststratification is done in PROC SURVEYMEANS using the POSTSTRATA statement, the following conditions can produce incorrect variance estimates and related statistics:


  • the default VARMETHOD=TAYLOR method is used, a CLUSTER statement is not specified, and with or without a STRATA statement specified

  • the default VARMETHOD=TAYLOR method is used, a DOMAIN statement is specified and a categorical analysis variable is specified on the VAR statement

  • a replication method is specified with VARMETHOD=BRR or VARMETHOD=JK and the REPWEIGHTS statement is specified

  • a replication method is specified with VARMETHOD=BRR or VARMETHOD=JK and a RATIO statement is specified

  • a categorical analysis variable that has one or more missing values is specified on the VAR statement

The following is a list of statistics keywords that might be affected and the corresponding column label in the output:

                   statistics

Click the Hot Fix tab in this note to access Hot Fix I41003 which provides corrections for all of these problems.



Operating System and Release Information

Product FamilyProductSystemProduct ReleaseSAS Release
ReportedFixed*ReportedFixed*
SAS SystemSAS/STATz/OS12.112.39.3 TS1M29.4 TS1M0
Microsoft® Windows® for x6412.112.39.3 TS1M29.4 TS1M0
Microsoft Windows Server 2003 Datacenter Edition12.19.3 TS1M2
Microsoft Windows Server 2003 Enterprise Edition12.19.3 TS1M2
Microsoft Windows Server 2003 Standard Edition12.19.3 TS1M2
Microsoft Windows Server 2003 for x6412.19.3 TS1M2
Microsoft Windows Server 200812.19.3 TS1M2
Microsoft Windows Server 2008 for x6412.112.39.3 TS1M29.4 TS1M0
Microsoft Windows XP Professional12.19.3 TS1M2
Windows 7 Enterprise 32 bit12.19.3 TS1M2
Windows 7 Enterprise x6412.112.39.3 TS1M29.4 TS1M0
Windows 7 Home Premium 32 bit12.19.3 TS1M2
Windows 7 Home Premium x6412.19.3 TS1M2
Windows 7 Professional 32 bit12.19.3 TS1M2
Windows 7 Professional x6412.112.39.3 TS1M29.4 TS1M0
Windows 7 Ultimate 32 bit12.19.3 TS1M2
Windows 7 Ultimate x6412.19.3 TS1M2
Windows Vista12.19.3 TS1M2
Windows Vista for x6412.19.3 TS1M2
64-bit Enabled AIX12.112.39.3 TS1M29.4 TS1M0
64-bit Enabled HP-UX12.112.39.3 TS1M29.4 TS1M0
64-bit Enabled Solaris12.112.39.3 TS1M29.4 TS1M0
HP-UX IPF12.112.39.3 TS1M29.4 TS1M0
Linux12.112.39.3 TS1M29.4 TS1M0
Linux for x6412.112.39.3 TS1M29.4 TS1M0
Solaris for x6412.112.39.3 TS1M29.4 TS1M0
* For software releases that are not yet generally available, the Fixed Release is the software release in which the problem is planned to be fixed.