Zhong Nan Da Xue Xue Bao Yi Xue Ban
October 2007
Objective: To explore the risk factors of gastric cancer in the rural area of Henan province.
Methods: Three hundred and twenty-five families with gastric cancer and 325 control families (1010 persons in each group) were selected among the rural residents in 4 counties of Henan province. Totally 2020 people were surveyed and assessed using population-based case-control family study.
The sediments of Haidong bay and Macun bay in Dianchi Lakes' experimental area were studied. The sediment column was cut in every 3cm, and the following items are tested, such as total phosphorus, phosphorus species, which include labile phosphate, Fe,Al-P, Ca-P and residual-P, total nitrogen, nitrate nitrogen, nitrite nitrogen, ammonium nitrogen. The results showed that the loads of nitrogen and phosphorus of these two bays increased quickly in recent years.
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