Two new studies underscored the delays that blacks, Latinos and the poor can face in getting timely cancer diagnoses.
A study of 983 women screened for breast cancer from 1998 to 2009 in Washington, D.C., found that Latinas and black women wait much longer for a definitive diagnosis than white women. Researchers at the George Washington University Cancer Institute found that the disparity held true even when the patients had similar types of insurance.
Among women with private insurance, whites waited 15.9 days on average between testing and diagnosis, while blacks waited 27.1 days and Latinas waited 51.4 days. Women without insurance waited even longer — 44.5 days for whites, 59.7 days for blacks and 66.5 days for Latinas.
The results surprised the research team. “We thought having health insurance would even the field among all women,” Heather Hoffman, the study’s lead author, said in a news release. She called for further research on the slow diagnoses for minority and uninsured women.
A second study, led by Dr. Chyke Doubeni at the University of Massachusetts Medical School, showed a link between low socioeconomic status and colorectal cancer. Researchers analyzed 6,934 cases of colorectal cancer from data collected between 1995 and 2003 in six states, along with the Detroit and Atlanta metropolitan areas. After accounting for various other health factors, researchers found that people in the poorest areas had a 13 percent higher incidence of colorectal cancer and a 15 percent higher incidence of advanced-stage colorectal cancer than those living in the most well-off neighborhoods.
Both studies were presented in Miami at the recent American Association for Cancer Research Conference on the Science of Cancer Health Disparities, which ended Sunday.


