Methods

Socio-economic and mortality analyses were conducted at a small area-level within each city.  The maps of Rotterdam represent 88 Buurts (Neighbourhoods) or small areas.  Data from 2001 provided by the Centraal Bureau voor de Statistiek was used to obtain the population size per Buurt. 

As the population size per small area was only available for 2001, the population figures for 2001 were multiplied by twelve to represent the total number of years included in the study period (1996 - 2008).  It is worth noting that the Census in Rotterdam is based on a population sample rather than a measure of the entire population.  Some Buurts, therefore, had small sample sizes, such as the harbour areas in Western Rotterdam.  Buurts with five or less cases (by sex for any indicator) were excluded from the analysis and are shown in stripes on the Atlas maps.  The INEQ-CITIES research of Rotterdam is based on these figures.  

The table below shows the estimated population size per Buurt by first, second (median) and third quartiles, based on 2001 figures from the Centraal Bureau voor de Statistiek.