Geographical stratification by socio-economic status: methodology from a household survey with elderly people in S. Paulo, Brazil.
Considering that in most developing countries there are still no comprehensive lists of addresses for a given geographical area, there has always been a problem in drawing samples from the community, ensuring randomisation in the selection of the subjects. This article discusses the geographical stratification by socio-economic status used to draw a multistage random sample from a community-based elderly population living in a city like S. Paulo-Brazil. Particular attention is given to the fact that the proportion of elderly people in the total population of a certain area appeared to be a good discriminatory variable for such stratification. The validity of the stratification method is analysed in the light of the socio-economic results obtained in the survey.
Ramos
L R
LR
Goihman
S
S
D000368:Aged; D001938:Brazil; D003710:Demography; D006801:Humans; D011897:Random Allocation; D012494:Sampling Studies; D012499:Sanitation; D012959:Socioeconomic Factors; D014505:Urban Population