由電腦癌症登記資料的統計分析，烏腳病流行區的膀胱發生率在1981年至1985年間年登記率為每十萬人口23.53人，屬於世界性的膀胱癌高發區。我們從這五年癌症病例的戶籍資料加以統計分析，可發現這地區和邊緣地區存在膀胱癌的高危險區，其他村里則為低危險村里和偶發病例的村里。從高危險村里的分佈圖看來，烏腳病流行區內的膀胱癌並不均勻分佈，有待進一步的分析探討。

Based on cancer registration date, the incidence of bladder cancer in Blackfoot Disease (BFD) endemic area was estimated. The annual incidence of bladder cancer in this area during the period 1981 and 1985 was 23.53% per 100,000 population. This is a new of the highest incidence areas of bladder cancer in the entire world. Where patients with bladder cancer lived during was analyzeds only to find these years that therer existed “high risk villages”, "low risk villages" and "villages with sporadic cases" of bladder cancer in BFD endemic areas. From the geographic distribution of villages or "high risk" for bladder cancer, this disease was found to be distributed in the endemic area, rather scattered along two rivers and near the sea-side. Any relationship between the carcinogen's distribution and the existence of “high risk villages” needs to be further investigated.