Snakebite in Tocantins: ecological analysis of determinants and risk areas, 2007- 2015

Abstract

Objective. To investigate the epidemiological profile affected by snakebite, their determinants and risk areas, in the state of Tocantins. Methods. Ecological study with data from the Notifiable Disease Information System, from 2007 to 2015. Linear regression of tests and Mann-Whitney and Kruskal-Wallis tests were used. Results. 7,764 snakebite were reported (incidence: 62.1/100,000 inhab.; lethality: 0.5%). The variables associated with snakebite were demographic density (Coeff.=1.36, 95%CI 0.72;1.99), agricultural work (Coeff.=0.02, 95%CI 0.01;0.03), Index of Municipal Human Development (Coeff.=2.99 – 95%CI 0.60;5.38), cassava cultivated area (Coeff.=8.49 – 95%CI 1.66;15.32), indigenous population (Coeff.=0,02 – 95%CI 0.00; 0.04), proportion of the illiterate population (Coeff.=4.70 – 95%CI 0.61;8.79) and employed (Coeff.=3.00 – 95%CI 0.93;5,06), which explained 64.48% of the variation. The high-risk areas were Amor Perfect, Cantão, Cerrado Tocantins Araguaia and Middle North Araguaia health regions. Conclusion. Municipal socioeconomic and demographic aspects associated with snakebites.