• Juliana Barcellos de Souza, Eduardo Grossmann, Dirce Maria Navas Perissinotti, Jose Oswaldo de Oliveira Junior, Paulo Renato Barreiros da Fonseca, and PossoIrimar de PaulaIPSociedade Brasileira para o Estudo da Dor, São Paulo, SP, Brazil.Faculdade de Medicina do ABC, Centro de Treinamento de Anestesiologia, São Paulo, SP, Brazil..
• Universidade Federal de Santa Catarina, Hospital Universitário, Florianópolis, SC, Brazil.
• Pain Res Manag. 2017 Jan 1; 2017: 4643830.

Background And ObjectivesChronic pain affects between 30% and 50% of the world population. Our objective was to estimate the prevalence of chronic pain in Brazil, describe and compare differences between pain types and characteristics, and identify the types of therapies adopted and the impact of pain on daily life.MethodsCross-sectional study of a population-based survey with randomized sample from a private database. The interviews were conducted by phone. 78% of the respondents aged 18 years or more agreed to be interviewed, for a total of 723 respondents distributed throughout the country. Independent variables were demographic data, pain and treatment characteristics, and impact of pain on daily life. Comparative and associative statistical analyses were conducted to select variables for nonhierarchical logistic regression.ResultsChronic pain prevalence was 39% and mean age was 41 years with predominance of females (56%). We found higher prevalence of chronic pain in the Southern and Southeastern regions. Pain treatment was not specific to gender. Dissatisfaction with chronic pain management was reported by 49% of participants.Conclusion39% of interviewed participants reported chronic pain, with prevalence of females. Gender-associated differences were found in intensity perception and interference of pain on daily life activities.

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