地区差异与老年人幽门螺杆菌感染的相关性

目的了解北京地区老年人群中幽门螺杆菌（Hp）的感染状况和地区差异。方法采用随机抽样人户问卷调查的方法，调查北京不同地区（城区、郊区、山区）60岁及以上的老人2006例，应用免疫印迹法检测血清Hp-IgG抗体。结果山区老人Hp的感染率为91．1％。城区为82．6％，郊区为77．2％，山区明显高于城区和郊区（P〈0．001）。结论北京城区、郊区和山区老年人群中的Hp感染率存在着显著差异，但地理因素不是决定性因素。

Correlation between region difference and helicobacter pylori infection of elderly people

Objective To understand helicobacter pylori (Hp) infection status and region difference in elderly people in Beijing.Methods 2 006 elderly people in different areas of Beijing (urban, suburb and mountainous district), who were no younger than 60 years old, were investigated by entering household questionnaire to detect serum Hp-IgG antibody with immunoblotting.Results Hp infection rates in elderly people from mountainous district, urban district and suburb were respectively 91.1%, 82.6%, 77.2%. The incidence rate of mountainous district was higher than that of urban district or suburb (P<0.001).Conclusions There are significant regional differences in Hp infection rates among elderly people in Beijing. But the geographic factor is not decisive.