Hi I am working on analysis for a cohort of patients and have a reference cohort as a comparison. 10 references were matched on various characteristics (age, race, etc). I am trying to find a simple way to "pick" which reference members are in a given analysis based on whether their corresponding case is in the analysis. There is a clustrid variable which is a unique identifier for a group of 1 patient and 10 referents.   For example, if I am restricting the analysis to only 75% of the patients, I only want to select those referents whose patient is part of the 75%.   I have been doing this a long way by creating a series of data steps with variables indicating whether the case is in the analysis, but this is very time-consuming.  Is there a simple way tell SAS how to select the referents?   Thank you in advance ... View more

I am using proc lifetest to create survival plots. I want to change the minimum on the y-axis from 0 to, say, 0.5. I have not had success following the SAS documentation and I am not well versed in proc template. I have tried running this proc template and then running my lifetest code but I do not quite understand how to get this template "into" the lifetest procedure.   Can someone please advise?? Thank you!   proc template;  define statgraph Stat.Lifetest.Graphics.ProductLimitSurvival;    begingraph;    layout overlay /     yaxisopts=(label="Incidence of DM" linearopts=(viewmin=0.5 viewmax=1 tickvaluelist=(0.5 0.6 0.7 0.8 0.9 1.0)));    endlayout;   endgraph;  end; run;   ods graphics on; proc lifetest data=dm_analysis  method=lt plots=survival intervals=1 to 10 by 1;  time dm_survt_yr*diabetes(0);  strata M_cohort;  where casecon in (0,1) and prev_diabetes=0 and dm_survt_flag=0 and age_20150101 ge 18;  run; ods graphics off; ... View more