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. 2003 Mar 31;5(1):e4. doi: 10.2196/jmir.5.1.e4

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© Roberto J Rodrigues, Ahmad Risk. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 31.3.2003. Except where otherwise noted, articles published in the Journal of Medical Internet Research are distributed under the terms of the Creative Commons Attribution License (http://www.creativecommons.org/licenses/by/2.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited, including full bibliographic details and the URL (see "please cite as" above), and this statement is included.

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Use of digital technologies by social class in Brazil. Categorization of social classes according to the classification adopted by the Brazilian Institute of Geography and Statistics (IBGE), similar to the quintile categorization for incomes where A corresponds to the upper quintile, and E for the lowest quintile of household income. From Ministério da Saúde (1999). Cartão Nacional de Saúde, Concorrência Internacional 001/99, Anexo: Doicumentação, Brasília DF [Ministry of Health of Brazil]