How was the sample adjusted when dwellings were demolished?
In the districts where old houses were demolished (where our old respondents used to live), we replaced the demolished buildings with the new ones, built on the same site, and the occupants of the new units were included in the sample. We did not make a special variable for these new households. The new households were sampled according to the same procedure: from a list of all dwellings on the survey site, we did a systematical sampling by an even interval. And the occupants of the old households (movers from the demolished buildings) were followed to their new addresses where possible.