ArticleCureus2026
Risk of Death From Pulmonary Tuberculosis Attributable to Diabetes Mellitus in Brazil: A Retrospective Cohort Study of Health Surveillance Data.
Article in Cureus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundDiabetes mellitus (DM) is associated with increased susceptibility to tuberculosis (TB) and unfavorable treatment outcomes.
objectiveTo evaluate the risk of pulmonary tuberculosis (PT)-related mortality attributable to DM in Brazil and to identify subgroups that may require differentiated clinical management.
methodsDescriptive and retrospective cohort study using data from Brazil's national health surveillance system. Data on new PT cases in individuals aged ≥18 years, diagnosed between 2012 and 2017, were analyzed. Fatality rates were compared between patients with and without self-reported DM, stratified by relevant covariates, to estimate the attributable risk due to DM (ARDM%).
resultsA total of 355,659 patients with PT were included in the analysis of this study, of whom 29,579 (8.3%) had PT-DM, and 326,080 (91.7%) had PT alone, without DM. Patients with PT-DM exhibited higher PT fatality rates (1,691, 5.7%) and lower treatment discontinuation rates (2,425, 8.2%) than those without DM (12,203, 3.7%) or who completed the full course of treatment (50,216, 15.4%). Overall, DM accounted for a 34.6% increase in PT fatality (ARDM%). The highest ARDM% (>50%) was observed among patients with higher education levels, those aged 18-39 years, residents of peri-urban areas, recipients of the Brazilian Cash Transfer Program (BCTP), and incarcerated individuals.
conclusionsDM substantially increases the fatality rate among patients with PT in Brazil, particularly in specific subgroups that may benefit from targeted clinical and public health interventions.
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