New datasets will be merged into these ‘master’ data files progressively. Please consult the generic coding guides as appropriate. Also, note that each individual (city) dataset is hosted on the city’s own page. These data sets are usually accompanied by detailed settlement descriptions and specific protocols that were applied in each city. In some cities additional questions were applied as part of that city’s survey. These data are located at the end of the city dataset but are not included in the ‘master’ data files which only include questionnaire data that were common to all cities and which are, therefore, directly comparable.