PROC ICLIFETEST time intervals are different

[Minyoungkim90]

Hello. I am working on some project to compare the mortality. 

I have follow up data for 3/6/9/12 months. 

However, I do not know the exact time when they are dead, so I though interval-censoring should be used. 

For example, the data that I organized looks like this. So if the person died between the start and 3 months, ltime=0, rtime=3. 

I read the documentation that introduces the PROC ICLIFETEST and tried it but I keep getting weird time intervals. 

My time intervals should be 0-3 3-6 6-9 9-12 12-inf but I get 3-3 6-6 9-9 12-12

My SAS code is 

proc iclifetest data=acs.data3 impute(seed=1234);
time (lTime, rTime);
strata indi;
run;

Can anyone help me what is wrong with this? 

And also, is there any way that I can modify the plots for PROC ICLIFETEST? 

I used the macro for KM plots for PROC LIFETEST but can't find a way to modify this plot (range for x and y axis)

Thank you