SAS Graphics

[Naviava1973]

Hi All,

I would like to generate a spaghetti plot for individuals on follow-up (having a continuous outcome)  and thereafter overlay an overall line of median (with quartile ranges) providing a summary of the outcome measures at each visit. I would also like to join the median values from baseline to the last visit (have 6 visits).

I can do the spaghetti plot fine without difficulty but I was wondering if someone can point me to a similar example.

My code so far looks like this:

proc sgplot data=ec noautolegend;
series x=years_on_follow_up y=cd4 / group=studyid LINEATTRS=(color=black pattern=1);
reg x=year y=cd4 / nomarkers lineattrs=(color=red);

xaxis label = "Years on follow-up";
yaxis label = "CD4 Count" ;
run;

Any thoughts and suggestions will be appreciated.

Ken

[RW9]

You can add (overlay) multiple graphs on the same plot, so its just a matter of adding the data you want to the dataset, and adding additional plot statements.  Assume that your data contains median_base median_visit in your data, then you could just add:

proc sgplot data=ec noautolegend;
  series x=years_on_follow_up y=cd4 / group=studyid LINEATTRS=(color=black pattern=1);
  reg x=year y=cd4 / nomarkers lineattrs=(color=red);
  series x=median_base y=median_visit;
xaxis label = "Years on follow-up";
yaxis label = "CD4 Count" ;
run;

Or something like that to get the extra line.