“…The variables were selected based on their theoretical and methodological relevance. From the theoretical perspective, Arretche's work [65] shows that inequality in Brazil over the past 50 years is related to characteristics of the population (e.g., social origin, family status, race, sex, and education), the provision of public goods and services to households (e.g., garbage collection, energy networks, treated water and sewage [3,66]), and the households' conditions (e.g., density of the household and existence of a bathroom). Among the countless variables associated with the study of social inequalities, income remains the most important [67,68].…”