Cancer Res Treat.  2019 Apr;51(2):519-529. 10.4143/crt.2018.146.

A Comprehensive Assessment of the Racial and Ethnic Disparities in the Incidence of Gastric Cancer in the United States, 1992-2014

• Yao Q
• Qi X
• Cheng W
• Xie SH

• KMID: 2464399
• DOI: http://doi.org/10.4143/crt.2018.146

Abstract

PURPOSE
This study aimed to evaluate the racial and ethnic disparities in the incidence of gastric cancer and their temporal trends in the United States.
MATERIALS AND METHODS
Using data from 13 cancer registries in the Surveillance, Epidemiology, and End Results database, we assessed such disparities during 1992-2014 in the United States using a variety of disparity metrics.
RESULTS
The age-standardized incidence rate of non-cardia gastric cancer was highest in Asian and Pacific Islanders, while the incidence of cardia gastric was highest in non-Hispanic whites in men and was similarly low in all groups in women. The incidence of non-cardia gastric cancer decreased in all groups over time, particularly in Asian and Pacific Islanders (on average by 3% per year). The incidence of cardia gastric remained relatively stable in virtually all racial/ethnic groups. The racial and ethnic disparities in gastric cancer incidence steadily decreased over time as measured on the absolute scale, which was mainly driven by the reduced disparities in non-cardia gastric cancer. The range difference in the incidence of gastric cancer decreased on average by 4.1% per year in men and by 2.6% per year in women from 1992 to 2014. The between group variance decreased by 5.6% per year in men and by 3.4% per year in women. The relative-scale disparity measures generally remained stable over time.
CONCLUSION
This study demonstrates decreased racial and ethnic disparities in the incidence of gastric cancer over time in the United States, particularly as measured on the absolute scale.

Keyword

Stomach neoplasms; Race/ethnicity; Disparity; Incidence

MeSH Terms

Asian Continental Ancestry Group
Cardia
Epidemiology
Female
Humans
Incidence*
Male
Registries
Stomach Neoplasms*
United States*

Figure

• 

  Fig. 1. Sex-specific age-standardized incidence rates of gastric cancer by anatomic subsite and racial/ethnic group in the Surveillance, Epidemiology, and End Results 13 registries in the United States during 1992-2014.

• 

  Fig. 2. Percent changes since 1992 in the racial and ethnical disparities in the incidence of total gastric cancer and non-cardia gastric cancer in men in the Surveillance, Epidemiology, and End Results 13 registries in the United States during 1992-2014. (A) Absolute measures for total gastric cancer. (B) Absolute measures for non-cardia gastric cancer. (C) Relative measures for total gastric cancer. (D) Relative measures for non-cardia gastric cancer.

• 

  Fig. 3. Percent changes since 1992 in the racial and ethnical disparities in the incidence of total gastric cancer and non-cardia gastric cancer in men in the Surveillance, Epidemiology, and End Results 13 registries in the United States during 1992-2014. (A) Absolute measures for total gastric cancer. (B) Absolute measures for non-cardia gastric cancer. (C) Relative measures for total gastric cancer. (D) Relative measures for non-cardia gastric cancer.

Reference

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