Temporal series of Brazilian papers presented at San Antonio Breast Cancer Symposium

Abstract

Objectives: This paper aimed to verify where Brazil stands as to the amount of Brazilian papers presented at the San Antonio Breast Cancer Symposium (SABCS) in the last 11 years; and to predict participation in the next 5 years (2014–2018). Methodology: The total number of papers presented at the SABCS was manually counted from the abstract books from 2003 to 2013. From those, the Brazilian papers (BPs) were divided into uni-institutional (UI) and multi- institutional (MI), that was subdivided in multi-institutional with a Brazilian primary center (MIBPC) and multi-institutional with an international primary center (MIIPC). The Poisson’s regression through JointPoint software was used to analyze the trend of the annual percentage change (APC) of Brazilian papers within the total yearly number of papers, and its rate. Through the APC, the number of papers to be submitted between 2014 and 2018 was also calculated. Results: The number of total papers in SABCS increased 7.22% per year (95%CI 5.0–9.5) so did BPs (APC=11.83, 95%CI 3.3–21.1); however when taking into account the rate of BPs over the total papers (APC=4.28, 95%CI -3.1–12.2), it indicates that the trend tends to stabilize. As for the UI (APC=7.22, 95%CI -31.3–67.4), MI (APC=2.8, 95%CI -10.8–18.3) and MIBPC (APC=19.2, 95%CI -31.1–106.1) it is observed that the trends also tend to stabilize. For MIIPC there was an increasing trend (APC=112.6, 95%CI 54.9–191.9). It was estimated that in 2018 the TB will represent 2.8% of all papers presented, being 29.27% of MICPI. Conclusions: The rates of Brazilian papers at SABCS are tending to stabilize throughout the years, although the participation of Brazilian institutions at MIIPC has increased considerably due to the Brazilian’s centers being more involved in international clinical trials.