Hello all,
I have iregularly spaced time/measurement data. I want to calculate an
average using all prior measurements. FYI, the variable to be
"averaged" is a dummy, so I would be looking at a percentage.
a hail mary was:
sort PID OB
egen calc_sum=sum(calc[_n-_n]), by(PID)
gen cave=calc_sum/OB
which obviously does not work.
My data looks like this. cave is the variable i wish I knew how to create.
PID OB dm dm_m calc cave
1 1 1-4-2000 0 1 1
1 2 1-10-2000 6 0 .5
1 3 1-28-2000 24 0 .333
1 4 2-1-2000 28 1 .5
2 1 10-5-1998 0 1 1
2 2 10-8-1998 3 0 .5
2 3 1-22-1998 17 1 .666
2 4 11-5-1998 31 1 .75
Thanks,
Dan
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