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Racial density and the socioeconomic, demographic and health context in Brazilian cities in 2000 and 2010.

INTRODUCTION
Racial density has not yet been explored in studies of racial inequalities in Brazil. Thisstudy identified categories of racial density in Brazilian cities and described the living and health context in these categories in 2000 and 2010, when demographic censuses were conducted.


METHOD
Ecological study which used skin color or race information from the last two censuses to calculate racial density (the ratio of people aggregated to the same racial group) of the Brazilian cities each year. Four categories of racial density (Brown; Mixed-race, predominantly black; White/Caucasian; and Mixed-race, predominantly white). Socioeconomic, demographic and health indicators were described to each category.


RESULTS
The categories of racial density captured important inequalities throughout the census and also indicated the continuance of worse living and health conditions in the cities composed by Browns and mixed-race people, predominantly Black; better conditions were indicated in cities where White/Caucasians are predominant. The cities, composed mainly of Browns and mixed-race people, predominantly Black, presented younger age structure, worse human development indexes, greater social vulnerability, income concentration, infant and premature mortality (<65 years) and lower life expectancy in both censuses, as compared to other cities.


DISCUSSION
Similarly to other countries, the racial density reflected inequalities in the Brazilian living and health context as well as a time lag among the cities.


CONCLUSION
The categories of racial density may contribute to social epidemiology and race relations studies in Brazil.