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1990年我们对管辖区内2所托幼单位和2所小学校的14岁以下儿童的抗-HAV阳性率及其危险因素做了初步调查。共调查326人,其中男166人,女160人。在抗-HAV阳性儿童所在单位选性别相同、年龄相差不超过±2岁,且抗-HAV阴性的儿童以1:2、1:1进行配对调查。调查项目包括:年龄、性别、家庭人均收入、父母文化程度、家庭人均居住面积、厕所及饮用水类型、饭前便后洗手习惯、肝炎病人接触史及本人甲肝病史、食用贝类方式、小摊
In 1990, we conducted a preliminary investigation of the anti-HAV positive rate and its risk factors in children under 14 in two kindergartens and two primary schools in the jurisdiction. A total of 326 people were investigated, including 166 males and 160 females. In the anti-HAV positive children the same sex selection, the age difference of not more than ± 2 years old, and anti-HAV negative children to 1: 2, 1: 1 for the paired investigation. Survey items include: age, sex, per capita income of the family, educational level of parents, per capita living area of the family, type of toilets and drinking water, habits of washing hands before and after meals, hepatitis history of hepatitis A and history of hepatitis A, consumption of shellfish, stalls