Racial and Ethnic Disparities in the Incidence of Esophageal Cancer in the United States, 1992-2013
A partir des données de 13 registres américains des cancers sur la période 1992-2013, cette étude analyse l'évolution des disparités ethniques dans l'incidence du cancer de l'œsophage
Racial and ethnic disparities in the incidence of esophageal cancer have not been thoroughly characterized with quantitative health disparity measures. Using data from 13 cancer registries in the Surveillance, Epidemiology, and End Results database, we assessed such disparities by histological type during 1992-2013 in the United States based on a variety of disparity metrics. The age-standardized incidence rate of squamous cell carcinoma was highest among blacks, while adenocarcinoma mainly affected white men. The rate of squamous cell carcinoma decreased over time in all race-ethnicity groups, which was most pronounced in blacks (by 5.7% per year among men and 5.0% among women). The adenocarcinoma rate increased among non-Hispanic whites and among black men. Racial and ethnic disparities in the incidence of total esophageal cancer decreased over time, which was mainly due to reduced disparities in squamous cell carcinoma. The two absolute disparity measures, range difference and between group variance, for adenocarcinoma increased by 3.2% and 6.8% per year, respectively, in men and by 1.8% and 5.3% per year, respectively, in women. This study demonstrates decreased racial and ethnic disparities in esophageal squamous cell carcinoma over time in the United States, while disparities increased in adenocarcinoma as measured on the absolute scale.