Abstract
Abstract Aim To conduct an exploratory study about cancer incidence and mortality in rural workers in the state of Acre, Brazil. Methods The Proportional Cancer Incidence Ratio (PCIR) was calculated for rural male workers who live in Rio Branco, Acre, with histological diagnosis of cancer, and the Cancer Mortality Odds Ratio (CMOR) comparing cancer deaths occurred in rural workers in the state of Acre with those occurred in people with other occupations in the period from 2007 to 2012. Results High and statistically significant PCIR were observed for tumors of larynx, PCIR = 7.55 (95% CI 4.23-12.46); melanoma, PCIR = 11.44 (95% CI 6.55-18.54); and non – Hodgkin lymphoma, PCIR = 10.00 (95% CI 5.17-17.50) compared to the population of Rio Branco. Regarding the mortality compared analysis, we can observe CMOR = 6.94 (95% CI 1.73-27.89) for pancreatic cancer and CMOR = 13.89 (95% CI 1.25-153.60) for cancer of the urinary tract. Conclusion The results suggest an increase in the incidence estimates of mortality for selected tumor sites among rural workers that are consistent with the literature.
Highlights
Cancer is currently the second leading cause of death worldwide becoming a clear public health problem, both in developed and developing countries
In the first part of this work, the Proportional Cancer Incidence Ratio (PCIR) was determined for a sample of rural workers living in the capital of Acre, Rio Branco
In order to have access to the cases of cancer in rural workers, we analyzed the universe of cancer cases recorded at the hospital database during the mentioned period; all cases occurred in male patients at the age of 20 years or older, living in Rio Branco
Summary
Cancer is currently the second leading cause of death worldwide becoming a clear public health problem, both in developed and developing countries. 30% of world occurrence of cancer could be avoided, such as occupational related cancers[1]. The productive activities historically predominant in Acre were rubber extraction, extensive livestock cutting and illegal logging. This occupational process occurred throughout the nineteenth century with the migration of Northeastern workers to Acre which was strongly influenced by the great drought in 1877. Migrants were deluded with easy wealth from the extraction of rubber, which was the product of international interest at that time. This period was known as the First Rubber Boom[2]
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