It's pretty flexible with variable lists. You can do things like:

mean(of x1-x4, of x22-x24, x50, x99);

see also http://support.sas.com/onlinedoc/913/getDoc/en/lrcon.hlp/a000695105.htm

On Aug 31, 5:28 pm, sas...@gmail.com wrote: > On Aug 31, 11:39 am, Bob_Abel...@HGSI.COM wrote: > > > > > > > Dear , > > > This is untested, but I think it's what you want. > > > data need; > > set have; > > if nmiss(of x1-x16)<=4 then newvar = 4*sum(of x1-x16)/n(of > > x1-x16); > > run; > > > Bob Abelson > > HGSI > > 240 314 4400 x1374 > > bob_abel...@hgsi.com > > > sas...@GMAIL.COM > > Sent by: "SAS(r) Discussion" <SA...@LISTSERV.UGA.EDU> > > 08/31/2007 11:27 AM > > Please respond to > > sas...@GMAIL.COM > > > To > > SA...@LISTSERV.UGA.EDU > > cc > > > Subject > > derive variable for dataset (urgent) > > > Dear all, > > > i have variable like > > This are the name of the variable from x1 - x16. > > x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13 x14 x15 x16 > > > Now what i want to do first is i want to check if there are 4 or fewer > > items of x1-x16 if they are missing. If 4 or fewer items are missing > > from x1-x16, then do; > > [sum of (x1-x16] *4] divided by number of non-missing items. > > > Can you tell me how do i do that? I really appreciate your help and > > effort. > > > Regards, > > Dear, > > I just had a quick question if in case i have something like this > > variables: > > x1-x16 x21 x22 x23 x24. > > How can i do a sum of this like you said before i can simply do > nmiss(x1-x16), but what if the case is as i mentioned above? > > Regards,- Hide quoted text - > > - Show quoted text -