I have variables in wide that belong together i groups (eg. var1a and var2a).
I would like to reshape into long while assigning the value in the var. institution to each obs/id. The data example should then become 4 obs. long.

Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input int id str24 institution str17 var1a str36 var2a str17 var1b str36 var2b
43 "hus 1" "1 kvinde" "Bil" "1 kvinde" "Bil"
44 "hus 2" "1 mand"   "Bil" "1 kvinde" "Bil"
end
hope someone can help me.
Best regards
Lars


If above is unclear it is this data structure I aim for:
id institution var1 var
43-1 hus1 1 kvinde Bil
43-2 hus1 1 kvinde Bil
44-1 hus2 1 mand Bil
44-2 hus2 1 kvinde Bil