Titolo A methodological approach based on indirectsampling to survey the homeless population Periodico Rivista di statistica ufficiale Anno: 2014 - Fascicolo: 1/2 - Pagina iniziale: 9 - Pagina finale: 30
The Italian National Institute of Statistics carried out the first survey on homeless
population. The survey aims at estimating the unknown size and some demographic and
social characteristics of this population. The methodological strategy used to investigate
homeless population could not follow the standard approaches of official statistics usually based on the use of population lists. The sample strategy for the homeless survey refers to the theory of indirect sampling, based on the use of a sampling frame indirectly related to the target population. Following the indirect sampling approach, the estimation is performed through the “weight sharing method”, based on links connecting the frame of services with homeless population