1                                                          The SAS System                                10:33 Friday, March 6, 2026

NOTE: Copyright (c) 2016 by SAS Institute Inc., Cary, NC, USA. 
NOTE: SAS (r) Proprietary Software 9.4 (TS1M7) 
      Licensed to CASE WESTERN RESERVE UNIVERSITY - T&R SFA, Site 70223832.
NOTE: This session is executing on the Linux 4.18.0-553.el8_10.x86_64 (LIN X64) platform.



NOTE: Analytical products:
      
      SAS/STAT 15.2
      SAS/ETS 15.2
      SAS/OR 15.2
      SAS/IML 15.2
      SAS/QC 15.2

NOTE: Additional host information:

 Linux LIN X64 4.18.0-553.el8_10.x86_64 #1 SMP Fri May 10 15:19:13 EDT 2024 x86_64 Red Hat Enterprise Linux release 8.10 (Ootpa) 

You are running SAS 9. Some SAS 8 files will be automatically converted 
by the V9 engine; others are incompatible.  Please see 
http://support.sas.com/rnd/migration/planning/platform/64bit.html

PROC MIGRATE will preserve current SAS file attributes and is 
recommended for converting all your SAS libraries from any 
SAS 8 release to SAS 9.  For details and examples, please see
http://support.sas.com/rnd/migration/index.html


This message is contained in the SAS news file, and is presented upon
initialization.  Edit the file "news" in the "misc/base" directory to
display site-specific news and information in the program log.
The command line option "-nonews" will prevent this display.




NOTE: SAS initialization used:
      real time           0.01 seconds
      cpu time            0.02 seconds
      
1          options ls = 80 nodate;
2          libname fu '../../sdata';
NOTE: Libref FU was successfully assigned as follows: 
      Engine:        V9 
      Physical Name: /meta/users/pxf/teaching/435/sdata
3          /* comparing to ex311.sas in the implementation of interaction term
3        ! */
4          data work;
5          	set fu.kidney;
NOTE: Data file FU.KIDNEY.DATA is in a format that is native to another host, 
      or the file encoding does not match the session encoding. Cross 
      Environment Data Access will be used, which might require additional CPU 
      resources and might reduce performance.
6          	if age = 2 then A2 = 1; else A2 = 0;
7          	if age = 3 then A3 = 1; else A3 = 0;
8          	A2N=A2*neph;
9          	A3N=A3*neph;
2                                The SAS System


NOTE: There were 36 observations read from the data set FU.KIDNEY.
NOTE: The data set WORK.WORK has 36 observations and 8 variables.
NOTE: DATA statement used (Total process time):
      real time           0.02 seconds
      cpu time            0.00 seconds
      

10         proc phreg;
11                 model survt*censor(0)= neph A2 A3 A2*neph A3*neph / covb rl;
12         run;

NOTE: Convergence criterion (GCONV=1E-8) satisfied.
NOTE: Hazard ratios that cannot be conveniently calculated or displayed are set 
      to missing in the ParameterEstimates table. Use the HAZARDRATIO statement 
      to compute the needed hazard ratios.
NOTE: The PROCEDURE PHREG printed pages 1-2.
NOTE: PROCEDURE PHREG used (Total process time):
      real time           0.21 seconds
      cpu time            0.03 seconds
      

13         

NOTE: SAS Institute Inc., SAS Campus Drive, Cary, NC USA 27513-2414
NOTE: The SAS System used:
      real time           0.33 seconds
      cpu time            0.05 seconds