CONTROL INFORMATION (to be filled out from the existing information, except for a4c)
Categories
Value
Category
1
capital city
2
city with population over 1 million – other than capital
3
over 250.000 to 1 million
4
50.000 to 250.000
5
less than 50.000
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.