Trend analysis of the Food and Nutrition Surveillance System coverage among Quilombolas children in Brazil

The study objective was to evaluate the temporal trend of nutritional status assessment coverage among Quilombola children in the Food and Nutrition Surveillance System (SISVAN). An ecological time-series study was conducted on the coverage of SISVAN data among Quilombola children under five years of age in Brazilian municipalities between 2008 and 2019. Prais-Winsten regression was performed to analyze the trend and the average annual percentage change (APC) of coverage, in accordance with demographic, socioeconomic and healthcare variables. The results revealed that national coverage varied from 0.1% in 2008 to 2.8% in 2013, decreasing to 0.3% in 2019. The national APC coverage was 11% from 2008 to 2019, corresponding to a stationary trend (p=0.68). All states showed an increase in coverage from 2008 to 2013, followed by a decrease through to 2019. The States of Mato Grosso do Sul and Sergipe showed an increasing trend, while Acre had a decreasing trend. The other states revealed a stationary trend. No temporal variation was observed in coverage according to the variables of interest. The conclusion drawn was that low SISVAN coverage was found among Quilombola children, with a steady temporal trend in most Brazilian states.