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Individuals at risk of colorectal polyps, the precursor to bowel cancer, can now self-predict their risks of the diseases by a simple scoring system developed by the Chinese University of Hong Kong (CUHK).
The scoring system, namely the CUHK Colorectal-polyp Prediction Index, calculates the risk of colorectal polyps based on age, gender, weight, height, family history of bowel cancer, smoking and diabetes mellitus.
The scoring system was developed from two screening groups, one for evaluation and the other for validation.
In the first group, risk factors of colorectal polyps were evaluated in 1,657 people who were recruited from May 2008 to December 2009.
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Those people were divided into high-, intermediate- and average-risk groups.
The elderly, males, those with family histories of bowel cancer, smokers, overweight people, and those with diabetes mellitus are believed to be more likely to have colorectal polyps.
The accuracy of the methodology was subsequently validated in the second group of 952 people recruited in 2010.
According to the colonoscopic findings, 81.8 percent of participants in the high-risk groups had colorectal polyps, while 42.4 percent in the intermediate and 29.7 percent in the average group.
One participant, 60, surnamed Ng, who belonged to the high risk group, had confirmed two colorectal polyps. One of them developed into cancer.
He has recovered after resection of the colorectal polyps.