CONTROL INFORMATION [TO BE COMPLETED BEFORE INTERVIEW]
Categories
Value
Category
1
Red River Delta
2
North Central area and Central coastal area
3
South East
4
Mekong River Delta
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.
Interviewer instructions
Codification of a3x into regions of homogeneous regulation and or business environment conditions, for ex. into regional clusters
