SciELO - Scientific Electronic Library Online

vol.29 issue4Report on sadness/depression, nervousness/anxiety and sleep problems in the Brazilian adult population during the COVID-19 pandemicSuicide trend among Brazilian adolescents between 1997 and 2016 author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO


Epidemiologia e Serviços de Saúde

Print version ISSN 1679-4974On-line version ISSN 2237-9622


FEITOSA, Shirley Barbosa; MISE, Yukari Figueroa  and  MOTA, Eduardo Luiz Andrade. Snakebite in Tocantins: ecological analysis of determinants and risk areas, 2007- 2015. Epidemiol. Serv. Saúde [online]. 2020, vol.29, n.4, e2020033.  Epub Aug 25, 2020. ISSN 1679-4974.


To investigate the epidemiological profile of snakebite accident cases, their determinants and risk areas in the state of Tocantins.


This was an ecological study using data from the Notifiable Health Conditions Information System, from 2007 to 2015. Multiple linear regression and the Mann-Whitney and Kruskal-Wallis tests were used.


A total of 7,764 snakebite accidents were reported (incidence: 62.1/100,000 inhab.; lethality: 0.5%). The variables associated with snakebite were population density (Coeff.=1.36, 95%CI 0.72;1.99), farming work (Coeff.=0.02, 95%CI 0.01;0.03), municipal human development index (Coeff.=2.99 – 95%CI 0.60;5.38), area planted with cassava (Coeff.=8.49 – 95%CI 1.66;15.32), indigenous population (Coeff.=0,02 – 95%CI 0.00; 0.04), proportion of illiterate people (Coeff.=4.70 – 95%CI 0.61;8.79) and employed people (Coeff.=3.00 – 95%CI 0.93;5,06), which together accounted for 64.48% of the variation. The high-risk areas were Amor Perfect, Cantão, Cerrado Tocantins Araguaia and Mid-North Araguaia health regions.


Municipal socioeconomic and demographic aspects were associated with snakebites.

Keywords : Snake Bites; Ecological Studies; Health Profile; Risk Zone.

        · abstract in Portuguese | Spanish     · text in English | Portuguese     · English ( pdf ) | Portuguese ( pdf )