City-dwellers more likely to develop late-stage cancer than rural residentsMay 11th, 2009 - 2:27 pm ICT by ANI
Washington, May 11 (ANI): A new study has revealed that people who live in urban areas are at higher risk of developing late-stage cancer than those who live in suburban and rural areas.
The findings indicate a need for more effective urban-based cancer screening and awareness programs.
To explore the rural and urban differences in late-stage cancer diagnoses, Sara L. McLafferty, Ph.D., of the University of Illinois and Fahui Wang, Ph.D., of Louisiana Sate University analyzed data from the Illinois State Cancer Registry from 1998 to 2002.
The researchers assessed late-stage cancer diagnoses of the four major types of cancer (breast, colorectal, lung, and prostate) throughout the state, comparing data from cities with those from less-populated regions.
They found that for all four cancers, risk was highest in the most highly urbanized area (Chicago) and decreased as areas became more rural.
However, in the most isolated rural areas, risk was also high. Risks were considerably low among patients living in large towns in rural areas.
For colorectal and prostate cancers, and to a lesser extent breast cancer, these disparities stemmed mainly from differences in the ages and races of individuals in the various geographic areas.
A high concentration of vulnerable populations and economically disadvantaged areas in Chicago and its suburbs accounted for the high rates of late-stage diagnosis found in these highly urban areas.
Among the different races, the black population was particularly vulnerable to late diagnosis. On the other hand, the lower rates of late-stage diagnosis in rural areas reflected the greater presence of elderly patients who have a lower risk of late-stage diagnosis, likely because of frequent doctors’ visits and age-related cancer screenings.
Differences in age and race did not explain the geographic disparities seen for lung cancer, indicating that other factors-such as cancer awareness or diagnostic differences-account for the rural-urban differences in late-stage lung cancer diagnosis.
The researchers said that their study found a reversal of the commonly held view that late-stage cancer risks are highest for rural residents.
“The concentration of health disadvantage in highly urbanized places emphasizes the need for more extensive urban-based cancer screening and education programs, especially programs targeted to the most vulnerable urban populations and neighbourhoods,” they said.
The study is published in the June 15, 2009 issue of CANCER, a peer-reviewed journal of the American Cancer Society. (ANI)
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