For ease of interpretation, the indicators “sewerage system” and “water” were grouped into a single dimension under the heading “urban features” and the indicators “child labour” and “school attendance” were grouped into a dimension under the heading of “children”. Three other indicators (“unemployed adults”, “functional illiteracy” and “assets”) were grouped under the heading of “unskilled, low-income adults”. The factor analysis also turned up another grouping of indicators of low socioeconomic status which was not apparent in table 6 because of the small number of observations (“main material used in the construction of the external walls of the dwelling” and “fuel used for cooking”).