Impact of socioeconomic status on survival of colorectal cancer patients

// Qian Zhang 1 ,2, Yufu Wang 1, 2 , Hanqing Hu 1, 2 , Rui Huang 1, 2 , Lei Xie 1, 2 , Enrui Liu 1, 2 , Ying-Gang Chen 1, 2 , Guiyu Wang 1, 2 and Xishan Wang 1, 2, 3 1 Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, PR China 2 Colorectal Cancer Institute of Harbin Medical University, Harbin, Heilongjiang 150086, PR China 3 Department of Colorectal Surgery, Cancer Hospital of Chinese Academy Sciences, Beijing, 100021, PR China Correspondence to: Xishan Wang, email: wxshan1208@126.com Guiyu Wang, email: guiywang@163.com Ying-Gang Chen, email: chygang777@126.com Keywords: socioeconomic, SEER, colorectal cancer, survival, adverse Received: October 17, 2016      Accepted: May 29, 2017      Published: September 13, 2017 ABSTRACT Socioeconomic status (SES) has an impact on the survival of various cancers, but it has not been fully understood in colorectal cancer (CRC).The Surveillance, Epidemiology and End Results database was adopted to detect the role of SES in the survival outcomes of CRC. A total of 184,322 eligible patients were included and SES status was analyzed. The multivariable analysis showed that Non-Hispanic Black (HR, 1.20; 95% CI, 1.15–1.24), being widowed (HR, 1.04; 95% CI, 1.01–1.07), any Medicaid (HR, 1.36; 95% CI, 1.33–1.39) and the lowest education level group patients had relative poorer prognosis. Besides, sex, tumor location, age, differentiation level and American Joint Committee on Cancer stage also had significant effects on overall survival of CRC. The individuals were further divided into five groups according to the number of survival-adverse factors. All of the four groups containing adverse factors showed impaired survival outcomes compared with the group containing no adverse factor.