“…While such geographic disparities might be in uenced by the differences in the distribution of environmental exposures and socioeconomic factors (Gentil et al, 2012;Merletti et al, 2011;Robert et al, 2004a), previous evidences were, however, usually limited by the assumption of constant estimates over the entire geographic area and unable to capture the geographical variations in the relationships (Tu and Xia, 2008;Wang et al, 2020). Socioeconomic factors could in uence women's lifestyle (Fei et al, 2015), including dietary pattern, physical activity and reproductive behavior (Linos et al, 2008), which are known factors for breast cancer risk (Adams et al, 2004;Gentil et al, 2012;Harper et al, 2009;Sung et al, 2021) and hospitalization (Silva, 2022). In addition, recent evidence suggests that hospitalizations for breast cancer might also be in uence by travel distances (de Souza et al, 2020)and social security (Ventura-Alfaro et al, 2016).…”