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atrisk
2006 Apr 17
7
help
Hi, I am trying to runn a age-period-cohort model, but here is what I am
having problem with, hope you can help me!
This is what I am trying to do:
sumzero_a<-((A-min(A))/5+1) - mean((A-min(A))/5+1) where A is my age
variable (numeric, the mid-point of a five-year age group), but I got the
following error:
Error in min(..., na.rm = na.rm) : invalid 'mode' of argument
I am pretty