Abstract LB-175: Gender and racial disparities in incidence trends of tobacco-related cancers from 2010 to 2013

Abstract Over one in three cancer-related deaths are associated with tobacco use. Although the overall incidence trend of tobacco-related cancers (TRCs) has been decreasing in the past a few decades, evidence suggests that not all TRCs have decreasing incidence and there exists gender and racial disparities in the TRC trends. Prior studies of TRC incidence have used the Surveillance, Epidemiology, and End Results Program (SEER) database. However, the SEER database includes limited information regarding the United States southeastern region and has been shown not to be representative of the US. In this study, we analyzed TRC incidence trends from 2010 to 2013 using the Florida cancer registry data, collected from a large ethno-racially diverse state. We computed annual age-adjusted incidence rates and annual percentage change (APC) to characterized the incidence trends of the following cancers: oral cavity, cervical, respiratory (lung, bronchitis, and larynx), urinary (bladder, kidney, and renal pelvis), digestive (esophagus, stomach, and pancreas), non-Hodgkin’s lymphoma, and pharyngeal. All incidence trends were also evaluated stratifying by gender (men and women) and race (Non-Hispanic (NH) Whites, NH Blacks, and Hispanics). Overall, all TRCs had a significant decrease in age-adjusted incidence rates for the study period, except for non-Hodgkin’s lymphoma and pharyngeal cancer for which the incidence remained unchanged. Oral cavity cancer had the biggest decline in age-adjusted incidence rates (APC= −2.5; 95% CI= −3.4, −1.6), while cancers of the digestive system had the smallest decline in incidence rates (APC= −0.6; 95% CI= −1.0, −0.2). When broken down by gender, males have a greater decrease in incidence rates than women for urinary and respiratory cancers. In addition, while pharyngeal cancer incidence rate stayed unchanged overall, there was a significant increase in the rate among male (APC= 1.0; 95% CI= 0.3, 1.7), but not female. When broken down by race and ethnic groups, NH Blacks and Hispanics had greater decline in cancer incidence for cervical cancer, oral cavity cancer, and respiratory cancer. For pharyngeal cancer, there was a significant decrease in incidence among NH Blacks (APC= −3.7; 95% CI= −5.5, −1.9), while the incidence significantly increased among NH Whites (APC= 1.6; 95% CI= 0.7, 2.5). In summary, there was an overall decreasing trend of TRC incidence. However, increasing incidence of pharyngeal cancer was observed for male and NH Whites. Citation Format: Danyell S. Wilson, Alice Parish, Yi Guo. Gender and racial disparities in incidence trends of tobacco-related cancers from 2010 to 2013 [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr LB-175. doi:10.1158/1538-7445.AM2017-LB-175