SAS Institute Alert Note SN-005432

From: SAS Technical Support (LISTSERV@VM.SAS.COM)
Date: Wed Aug 01 2001 - 09:33:54 EDT

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    SN-005432 ***Alert Note***

    Incorrect p-values possible with an EXACT statement with the MC option
    and BY-group processing in Proc FREQ

    Product: Base SAS
    Component: FREQ procedure
    Priority: ALERT

      Proc FREQ gives incorrect EXACT/MC p-values for the one-way chi-square
      test when the TESTP= or TESTF= option on the TABLES statement is
      specified and a BY statement is used. The results from the first
      BY-group are correct, but the results from all subsequent BY-groups are
      not.

      To circumvent the problem, remove the BY statement and use WHERE
      statements to subset the data.

    Keywords:
      error exact mc by freq proc testp one way chisq incorrect wrong
      erroneous
      incorrect p-values possible with an exact statement with the mc option
      and by-group processing in proc freq
      005432 5432

    SAS Note Revised On: Mon, 16 Jul 2001

    System Version Reported Version Fixed

    AIX/6000 8 TSM0 9
    VM/ESA (CMS) 8 TSM0 9
    Compaq Tru64 UNIX 8 TSM0 9
    HP-UX Operating Systems 8 TSM0 9
    Intel ABI 8 TSM0 9
    MIPS ABI 8 TSM0 9
    OS/390 (MVS) 8 TSM0 9
    IBM OS/2 8 TSM0 9
    Solaris 8 TSM0 9
    OpenVMS VAX 8 TSM0 9
    OpenVMS Alpha 8 TSM0 9
    Windows NT 8 TSM0 9
    Windows 2000 Datacenter Server 8 TSM0 9
    Windows 2000 Professional 8 TSM0 9
    Windows 2000 Server and Advanced Server 8 TSM0 9
    Windows 95 8 TSM0 9
    Windows 98 8 TSM0 9

    No Fixes Available

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