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Problem Note 62081: The kernel-smoothed hazard confidence limits in PROC LIFETEST are incorrect

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If you request a kernel-smoothed hazard plot and confidence limits with the PLOTS=HAZARD(CL) option in the PROC LIFETEST statement, the displayed confidence interval is incorrect. Similarly, if you save the resulting hazard plot data using the statement ODS OUTPUT HazardPlot=data-set, the UPPER and LOWER variable values are incorrect. The problem occurs for the METHOD=BRESLOW, FH, or KM options in PROC LIFETEST. The problem also occurs for any hazard-option KERNEL=BIWEIGHT, EPANECHNIKOV, or UNIFORM.

By default, METHOD=KM or its alias, PL, and when you specify PLOTS=HAZARD the default KERNEL= is Epanechnikov.

There is no workaround for this problem.

 



Operating System and Release Information

Product FamilyProductSystemProduct ReleaseSAS Release
ReportedFixed*ReportedFixed*
SAS SystemSAS/STATz/OS9.215.19.2 TS1M09.4 TS1M6
Microsoft® Windows® for 64-Bit Itanium-based Systems9.29.2 TS1M0
Microsoft Windows Server 2003 Datacenter 64-bit Edition9.29.2 TS1M0
Microsoft Windows Server 2003 Enterprise 64-bit Edition9.29.2 TS1M0
Microsoft Windows XP 64-bit Edition9.29.2 TS1M0
Microsoft® Windows® for x649.215.19.2 TS1M09.4 TS1M6
Microsoft Windows Server 2003 Datacenter Edition9.29.2 TS1M0
Microsoft Windows Server 2003 Enterprise Edition9.29.2 TS1M0
Microsoft Windows Server 2003 Standard Edition9.29.2 TS1M0
Microsoft Windows XP Professional9.29.2 TS1M0
Windows Vista9.29.2 TS1M0
Windows Vista for x649.29.2 TS1M0
64-bit Enabled AIX9.215.19.2 TS1M09.4 TS1M6
64-bit Enabled HP-UX9.215.19.2 TS1M09.4 TS1M6
64-bit Enabled Solaris9.215.19.2 TS1M09.4 TS1M6
HP-UX IPF9.215.19.2 TS1M09.4 TS1M6
Linux9.215.19.2 TS1M09.4 TS1M6
Linux for x649.215.19.2 TS1M09.4 TS1M6
OpenVMS on HP Integrity9.215.19.2 TS1M09.4 TS1M6
Solaris for x649.215.19.2 TS1M09.4 TS1M6
* 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.