Create a variable
gen is_one = prop == 1
and
lowess is_one time
egen mean_is_one = mean(is_one), by(time)
etc.
Nick
[email protected]
Steinar Fossedal
> I have a survival time dataset with customer information, and
> I want to
> create a plot which shows the proportion of the population with a
> certain nominal property as it changes over time. Thus I would like to
> calculate the number of customers with the property at each time, and
> divide it to the number of total customers (or customers with another
> interesting property). Since there is not a record at each time t for
> every customer, I can't simply calculate it from the records directly.
> (- count if prop==1 & time==9 - would miss customers which got the
> property at time 8)
>
> Any suggestions as to how I can do this? I played with the idea to
> create records for all time intervals, but I can't seem to
> find an easy
> way to duplicate observations either.
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