Trend of inequalities in the performance of mammography in Brazilian capitals in the last ten years

The objective was to verify the trend of inequality in the realization of mammography exam according to the possession of health insur-ance plan and schooling from data from the peri-od 2011 to 2020 of VIGITEL. Population-based study with data from the Surveillance System of Risk and Protection Factors for Chronic Diseases by Telephone Survey (VIGITEL) between 2011 and 2020. Outcome: mammography exam in the last 2 years in women aged 50 to 69 years. The magnitude of inequalities of outcome in relation to exposures (health insurance plan and educa-tion) was estimated using two indices: inequality slope index (SII) and concentration index (CIX). The prevalence of mammography exam (2011-2020) increased from 74,4% to 78,0%, with a stable trend. The prevalence of those with health insurance plan were 85,7% and 86,4%, and with-out 63.4% and 71.2%, with an increasing trend. According to education, women with 0-8 years of schooling the prevalence increased from 68,2% to 72,6%, 9-11 years from 80,4% to 80,0% (de-creasing trend), 12 years or more 88,0% to 86,6% (decreasing trend). As for the absolute (SII) and relative (CIX) inequality indices of schooling and health insurance plan show that there is a de-crease in inequality over the last 10 years.