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目的调查北京市怀柔区中小学生每日饮水量。方法采用分层抽样的方法在怀柔区抽取733名中小学生,采用连续7 d 24 h的饮水记录法,了解调查对象每天的饮水情况,包括每次的饮水量、饮水种类以及饮用地点。分析不同性别、年龄段的饮水量。结果调查对象每天的饮水量中位数为1 001 ml,男生每天饮水量(1 059 ml)显著高于女生(965 ml,Z=2.70,P<0.01);小学生、初中生、高中生饮水量之间差异无统计学意义(χ2=0.69,P>0.05);调查对象白水饮用量的中位数是700 ml,饮料饮用量是217 ml。男生白水的饮用量(744 ml)显著高于女生(675 ml,Z=2.33,P<0.05),而男生(217 ml)、女生(219 ml)饮料饮用量之间差异无统计学意义。结论怀柔区中小学生以饮用白水为主,且不同性别之间的饮水量存在差异。
Objective To investigate the daily drinking amount of primary and secondary school students in Huairou district of Beijing. Methods A total of 733 primary and secondary school students were selected by stratified sampling in Huairou District. Drinking water recording method was used for 24 hours on a continuous basis for 7 days to find out the daily drinking water conditions of the respondents, including the amount of drinking water each time, the type of drinking water and the place of drinking. Analysis of different gender, age of drinking water. Results The median daily water intake of the surveyed subjects was 1 001 ml, while that of male students (1 059 ml) was significantly higher than that of girls (965 ml, Z = 2.70, P <0.01). The drinking water intake of primary, middle and high school students (Χ2 = 0.69, P> 0.05). The median of white water consumption of the surveyed subjects was 700 ml and that of drink was 217 ml. There was no significant difference in boys drinking water (744 ml) compared with girls (675 ml, Z = 2.33, P <0.05), while boys drinking water (217 ml) and girls (219 ml) drinking. Conclusions Primary and secondary school students in Huairou District mainly drink white water, and there are differences in drinking water among different sexes.