Although inflammatory bowel disease (IBD) affects primarily White patients, about one-quarter of cases are found in non-White racial and ethnic groups. Various factors have combined to lead to disparities in treatment and outcomes for non-Whites with IBD.
Ethnic and racial disparities, along with socioeconomic factors, were the subject of a presentation by Ruby Greywoode, MD, at the annual congress of the Crohn’s & Colitis Foundation and the American Gastroenterological Association.
“Historical and present-day realities of racial inequity and factors that contribute to socioeconomic status [include] educational and housing policies, employment practices, and generational wealth. Addressing health disparities requires acknowledging these systemic factors,” said Dr. Greywoode, who is with Montefiore Medical Center in New York.
An important concept in discussing health disparity is social determinants of health, which refers to nonbiological factors that affect health and health outcomes. These are “the conditions in which people live, work, learn, and play that affect their health and their quality of life,” said Dr. Greywoode.
Dr. Greywoode shared examples of social determinants that affect economic stability and financial worry. One study found that one in six IBD patients reported not taking their medications because of cost considerations. A survey of about 900 adults showed that 1 in 4 delayed medical care – half of those because of cost; patients who delayed care were 2.5 times more likely to report an IBD flare in the previous year.
Another important issue is food insecurity. Other presenters at the session emphasized the importance of high-quality nutrition in IBD, and Dr. Greywoode presented one survey showing that only 9% of patients who had both food security and social support reported cost-related medication nonadherence. Among those that had either food insecurity or poor social support, 12% reported cost-related medication nonadherence, but the proportion jumped to 57% among patients who had both food insecurity and lack of social support.
Session comoderator Kelly Issokson noted that socioeconomic factors often interfere with adoption of healthy diets. Whole foods and plant-based foods are expensive, and the financial pressures of the COVID-19 epidemic have made that worse. “Millions of people are slipping into poverty and food insecurity. This is one of the things she highlighted as factors in medication nonadherence,” said Ms. Issokson, who is the clinical nutritional coordinator at the digestive disease clinic at Cedars-Sinai Medical Center in Los Angeles.
Dr. Kelly Issokson
Dr. Greywoode also described studies that looked at race, socioeconomic status, and IBD outcomes. A review from 2013 showed disparities among Whites, African Americans, and Hispanics with respect to undergoing ulcerative colitis–related colectomy and Crohn’s disease–related bowel resection. Ulcerative colitis patients on Medicaid had 230% greater in-patient mortality, compared with patients with private insurance, even after adjustment for multiple confounders.
But inequities are not static. “Since this publication, we have numerous other studies drawing conclusions that sometimes agree with and sometimes conflict with it. My belief is that health disparities in IBD will continue to be an active area of research. We know that it takes vigilance to identify, track, and address any disparities when they do arise,” said Dr. Greywoode.
Dr. Greywoode also noted that phenotypic differences based on race and ethnicity influence disparities. She showed results from a meta-analysis that found a difference in the frequency of perianal Crohn’s disease by race and ethnicity; the highest frequency occurred in Black patients (31%), followed by Asians (22%), Whites (14%), and Hispanics (13%). Another study showed that African American patients with Crohn’s disease were more likely to develop a new abscess (adjusted odds ratio, 2.27; 95% confidence interval, 1.31-3.93) or anal fissure (aOR, 1.76; 95% CI, 1.01-3.07), and were also more likely to be initiated on an anti–tumor necrosis factor drug (aOR, 1.85; 95% CI, 1.09-3.14).
Those differences underscore the need to recognize that IBD is not just a disease for White patients. “As we move forward in IBD research, we recognize that individuals of European ancestry are not the only ones who have IBD. There is a growing diverse racial and ethnic population with IBD,” said Dr. Greywoode.
She noted that, in the United States, it is estimated that about one in four adult patients are non-Hispanic African American, Hispanic, Asians, or other ethnicities. Nevertheless, Whites are overrepresented among participants in IBD clinical trials. Some trials are composed of as much as 95% White patients, and sometimes race isn’t even listed. “It’s unclear if [race/ethnicity data are] not collected or not deemed important, but we know that what is not collected is not measured, and what is not measured can’t be evaluated, either to praise or constructively criticize,” said Dr. Greywoode.
Fortunately, there are efforts in place to improve representation in clinical trials. There has been a mandate for almost 3 decades that federally funded research must include racial and ethnic minorities who have been traditionally underrepresented. The Food and Drug Administration has also provided guidance to industry to improve diversity in clinical trial participation, and industry groups have developed strategies, including improved representation among investigators and related early-career development programs. At the community and independent health care practice levels, clinical trial networks encourage patient participation with regulatory and data management support to bolster practices with insufficient resources.
Tina Aswani Omprakash
Underrepresentation in clinical trials resonated with comoderator Tina Aswani Omprakash, who is a patient advocate and a master’s in public health student at the Icahn School of Medicine at Mount Sinai, New York. She called for greater awareness among physicians that IBD can occur among people of all backgrounds. “[Providers] would look at me and [say]: ‘There’s no way that, as a South Asian woman, you have that kind of disease.’ There’s that lack of believability,” said Ms. Aswani Omprakash.
Greater recognition of the diversity of patients, as well as the phenotypic differences found among ethnicities, could also inform clinical trial participation and, ultimately, more personalized medicine. “We have to look at these things, observe how they’re affecting populations differently, so that we can have proper medication solutions,” said Ms. Aswani Omprakash.
Dr. Greywoode and Ms. Issokson have no relevant financial disclosures. Ms. Aswani Omprakash has consulted for Genentech, AbbVie, Janssen, and Arena.
The AGA applauds researchers who are working to raise our awareness of health disparities in digestive diseases. The AGA is committed to addressing this important societal issue head on. Learn more about AGA’s commitment through the AGA Equity Project.
Updated Feb. 17, 2021.