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美国明尼苏达大学研究发现:给50岁以上的成人每年测一次大便潜血试验,可减少结直肠癌的自然死亡率近1/3。研究者给15570名50岁以上成人,每年查一次大便潜血试验达13年之久,减少结直肠癌死亡率33％;而两年检测一次该病死亡率则无明显改观。研究者说,由于所有大便标本都经过再水合处理,所以阳性率提高了4倍;如果不这样做,则不可能得出同样的结论。大便潜血试验阳性者,都及时做了结肠镜检查,从而减少了该病死亡率。有关专家评论说,虽然大便潜血试验假阳性率较高,但是它能像触摸乳房检测乳腺癌一样方便有效。
Research at the University of Minnesota found that measuring fecal occult blood tests once a year for adults over the age of 50 can reduce the natural death rate of colorectal cancer by nearly one-third. The researchers gave 15570 adults over the age of 50 to check the fecal occult blood test once a year for 13 years and reduce the mortality of colorectal cancer by 33%. However, the death rate of the disease was not significantly improved in two years. The researchers said that since all stool specimens have been rehydrated, the positive rate has increased four-fold; if not, it is impossible to draw the same conclusion. Positive fecal occult blood tests were done colonoscopy in time, thereby reducing the mortality rate of the disease. Experts commented that although the fecal occult blood test has a high false positive rate, it can be as convenient and effective as touching the breast to detect breast cancer.