I'm conducting an analysis on SAS 9.4 with health insurance enrollment data and want to understand the enrollment patterns before and after a diagnosis. I have monthly data for several years which I want to select 24 rolling months based around a diagnosis date. I want to copy over the select months into new columns based on the start month range. I have a dummy example below where month1-month7 are the enrollment months 1 through 7 and start_month is the number of the start month and end _month is the number of the end month of the range. I want to copy the data into the "next" variables for a range of 4. Adding "output" into the code doesn't solve the issue. The desired output at the end of this code. Thank you! *table creation for 2 examples; data try1; input month1-month7 start_month end_month; datalines; 1 2 3 4 5 6 7 2 4 1 2 3 4 5 6 7 4 7 ; run; proc print data=try1; run; *This straight copies the data into the "next" variables, not based on start/end range; data try2; set try1; array month month1-month7; /*enrollment months*/ array next next1-next4; /*want to copy over select months here*/ do i=1 to 4; /*interested in range of 4 months*/ next{i}=month{i}; /*this straight copies the data*/ end; run; proc print data=try2; run; *HERE IS WHERE I AM STUCK; *Trying to copy the select months based on the start and end range; *This code below only copies the last select month, which is wrong; data try3; set try1; array month month1-month7; /*enrollment months*/ array next next1-next4; /*want to copy over select months here*/ do k=start_month to end_month; /*start month and end month for each person*/ do i=1 to 4; /*interested in range of 4 months*/ next{i}=month{k}; /*this code is incorrect, it just copies the last month */ end; end; run; proc print data=try3; run; /*This is the desired output*/ data want; input month1-month7 start_month end_month next1-next4; datalines; 1 2 3 4 5 6 7 2 4 2 3 4 . 1 2 3 4 5 6 7 4 7 4 5 6 7 ; run; proc print data=want; run;
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