Rodrigo Brice�o" <[email protected]>
2. Months ago I asked to the list how can I generate some age groups.
I use that help in order to have a frequency of the hospital discharges
by age groups. The problem here is that I found that my variable age
was a string8 variable. Then the options to generate a new variable
was restricted: I tried typing:
gen str8 rank_edad=1 if inrange(edad,0,0)
to construct my age groups (less than 1 year, between 1 and 4,
between 5 and 9, 10-19, 20-29, 30-39, 40-49, 50-59 and the last one 60 or
more)
> That's not going to work as you typed it because
> strings need to be in " ".
This not work for me so I try:
encode edad, gen (edad2)
like I learned from my net course on Stata.
The things appear to be ok, because when I type
tab edad2 I see all the ages correctly. The problem here is that I'm
building three groups (the first three) that don�t have data on it. But
Stata is calculating something on it, I don't know why.
gen byte rank_edad=1 if range(edad2,0,0)
replace rank_edad=2 if inrange (edad2,1,4)
replace rank_edad=3 if inrange (edad2,5,9)
replace rank_edad=4 if inrange (edad2,10,19)
and so on.....
tab rank_edad
rank_edad | Freq. Percent Cum.
------------+-----------------------------------
1-4_anos | 90 1.73 1.73
5-9_anos | 1190 22.88 24.61
10-19_anos | 2114 40.64 65.24
20-29_anos | 892 17.15 82.39
30-39_anos | 304 5.84 88.24
40-49_anos | 202 3.88 92.12
50-59_anos | 162 3.11 95.23
Mas_60_anos | 248 4.77 100.00
------------+-----------------------------------
Total | 5202 100.00
Do you know or guess why Stata is putting data on the first three groups
that is supposed to be empty (I build those groups because I'm making a do
file, that I can apply to other databases).
Thanks....
Rodrigo
Nick
[email protected]
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