Prior to SAS/STAT 12.1 in SAS 9.3 TS1M2, PROC PHREG issues the following errors if you specify the option METHOD=BRESLOW or METHOD=NELSON in the BASELINE statement:

     ERROR 22-322: Syntax error, expecting one of the following: CH, PL. 
     ERROR 76-322: Syntax error, statement will be ignored 

To circumvent the problem specify METHOD=CH or METHOD=EMP. CH and EMP are aliases, and both specify that the Breslow method is used. Beginning in SAS 9.2, the Breslow method is the default, so the problem can also be avoided by omitting the METHOD= option.

The SAS/STAT 12.1 User's Guide correctly documents the available METHOD= options in the BASELINE statement. Earlier versions of the SAS/STAT User's Guide incorrectly include METHOD=BRESLOW or METHOD=NELSON. All earlier SAS/STAT software documentation for PROC PHREG should include only METHOD=CH and its alias METHOD=EMP.

Also note that all versions of the SAS/STAT User's Guide in 9.2 as well as the SAS/STAT 9.3 User’s Guide incorrectly state “The default is METHOD=BRESLOW”. The correct statement should be “The default is METHOD=CH”. The SAS/STAT User’s Guides prior to 9.2 correctly state “The default is METHOD=PL”.

Operating System and Release Information

Product Family	Product	System	SAS Release
			Reported	Fixed*
SAS System	SAS/STAT	Tru64 UNIX	9.1 TS1M3	9.3 TS1M2
		OpenVMS Alpha	9.1 TS1M3	9.3 TS1M2
		Linux	9.1 TS1M3	9.3 TS1M2
		HP-UX IPF	9.1 TS1M3	9.3 TS1M2
		64-bit Enabled Solaris	9.1 TS1M3	9.3 TS1M2
		64-bit Enabled HP-UX	9.1 TS1M3	9.3 TS1M2
		Windows Vista for x64	9.1 TS1M3	9.3 TS1M2
		Windows Vista	9.1 TS1M3	9.3 TS1M2
		Microsoft Windows XP Professional	9.1 TS1M3	9.3 TS1M2
		Microsoft Windows Server 2003 Standard Edition	9.1 TS1M3	9.3 TS1M2
		Microsoft Windows Server 2003 Enterprise Edition	9.1 TS1M3	9.3 TS1M2
		Microsoft Windows 2000 Professional	9.1 TS1M3
		Microsoft Windows 2000 Server	9.1 TS1M3
		Microsoft Windows 2000 Datacenter Server	9.1 TS1M3
		Microsoft Windows XP 64-bit Edition	9.1 TS1M3	9.3 TS1M2
		Microsoft Windows Server 2003 Enterprise 64-bit Edition	9.1 TS1M3	9.3 TS1M2
		Microsoft Windows Server 2003 Datacenter 64-bit Edition	9.1 TS1M3	9.3 TS1M2
		Microsoft® Windows® for 64-Bit Itanium-based Systems	9.1 TS1M3	9.3 TS1M2
		64-bit Enabled AIX	9.1 TS1M3	9.3 TS1M2
		Microsoft Windows Server 2003 Datacenter Edition	9.1 TS1M3	9.3 TS1M2
		Microsoft Windows NT Workstation	9.1 TS1M3
		Microsoft Windows 2000 Advanced Server	9.1 TS1M3
		z/OS	9.1 TS1M3	9.3 TS1M2

* 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.

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The METHOD=BRESLOW or METHOD=NESLON option in the BASELINE statement of PROC PHREG gives syntax errors in some versions of SAS, despite being valid according to the documentation.

Type:	Problem Note
Priority:	medium
Topic:	Analytics ==> Survival Analysis SAS Reference ==> Procedures ==> PHREG

Date Modified:	2015-10-01 13:55:28
Date Created:	2013-06-12 13:45:17