[Food insecurity and household water insecurity: a population-based study in a municipality in the Amazon River basin, Brazil].

This study analyzed food insecurity and associated factors in the urban area of a municipality in the Amazon River basin, Western Amazon. This is a cross-sectional population-based study conducted from August to November 2021 with 983 households selected by stratified probability sampling. A multinomial logistic regression model was used, adopting the following criteria: p-value < 20% in the bivariate analysis and p-value < 5% for the multivariate adjustment. The results of the analyses were described as odds ratio (OR) and 95% confidence interval (95%CI). The following variables were significantly associated with mild or moderate food insecurity: household water insecurity; number of residents ≥ 5 in the household; belonging to socioeconomic class D or E; having a father, mother or another as the head of the family; and having any resident as a beneficiary of the Brazilian Income Transfer Program. The analysis model for severe food insecurity showed that living with household water insecurity; belonging to socioeconomic class D or E; having a father, mother or another as the head of the family; age of the head of the family < 55 years; and family income lower that two minimum wages increased the chances of severe food insecurity when compared to those with food security. In conclusion, this study found a high prevalence of food insecurity in the Municipality of Itapiranga, State of Amazonas, North Region of Brazil, associated with social and economic vulnerability, lack of public services, and household water insecurity.