Survival rates of breast cancer and predictive factors: a hospital-based study from western Amazon area in Brazil

This article aims to estimate hospital-based breast cancer survival in Rio Branco, Acre, and predictor factors. Hospital-based cohort study of all women diagnosed with breast cancer (2007-2012) was proceeded. Information were obtained from medical reports, and follow-up was until 2013. One-, 2- and 5- years breast cancer specific-survival were estimated by Kaplan-Meier method. Crude and adjusted Harzards Ratios (HR) were estimated by proportional Cox regression model. One-, 2-, and 5-year overall breast cancer survival were 95.5%, 83.7%, and 87.3% respectively. Surgery combined to radiotherapy significantly affected 1-, 2-, and 5-year survival (99%, 94%, and 90.6%, respectively) as compared to other treatments (77%,57.1%, and 37.5%, respectively). Comparing to surgery combined to radiotherapy treatment, surgery alone increased the risk of death, independently of age and stage (HR = 7.23;95%CI:2.29-22.83). In Rio Branco, Acre, 5-year breast cancer survival is similar to more developed areas in Brazil. Surgery combined to radiotherapy was independently associated to a lower risk of death as compared to surgery alone and other treatment.Resumo Na Am érica Latina, a sobrevida de 5 anos do câncer de mama está abaixo dos países da Europa central. Não há estudos de sobrevida de câncer de mama de base hospitalar no oeste da Amazônia brasileira. O objetivo deste artigo é estimar a sobrevida hospitalar de câncer de mama e fatores associados em Rio Branco, Acre. Estudo de coor...
Source: Ciencia e Saude Coletiva - Category: Occupational Health Source Type: research