-------------------------------------------------
-fillin- is useful for your problem:
clear
input id class5 number
1 2 12
1 3 6
1 4 2
2 1 3
2 2 1
2 5 8
end
fillin id class5
recode number(.=0)
drop _fillin
by id, sort: egen t=total(number)
gen proportion=number/t
list
+--------------------------------------+
| id class5 number t propor~n |
|--------------------------------------|
1. | 1 1 0 20 0 |
2. | 1 2 12 20 .6 |
3. | 1 3 6 20 .3 |
4. | 1 4 2 20 .1 |
5. | 1 5 0 20 0 |
|--------------------------------------|
6. | 2 1 3 12 .25 |
7. | 2 2 1 12 .0833333 |
8. | 2 3 0 12 0 |
9. | 2 4 0 12 0 |
10. | 2 5 8 12 .6666667 |
+--------------------------------------+
Hope this helps
Svend
________________________________________________________
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000 Aarhus C, Denmark
Phone, work: +45 8942 6090
Phone, home: +45 8693 7796
Fax: +45 8613 1580
E-mail: [email protected]
_________________________________________________________
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