[目的 ]研究城市饮用水的浑浊度与人群胃肠道疾病之间是否存在相关关系 ;如果有相关关系的存在 ,则估算一下由于浑浊度引起的胃肠道疾病治疗的医疗费用的增加有多少。 [方法 ]利用回顾性时间序列分析模型 ,比较分析了 1994年 1月至 1996年 6月 (共 3 0个月 )期间因胃肠道疾病而寻求就诊的次数与饮用水浑浊度变化的关系。 [结果 ]饮用水周平均浑浊度与因胃肠道不适而引发就医的周平均就诊次数等均呈现一级自回归的数据特征 ;饮用水周平均浑浊度与第三周的周平均就诊次数存在着统计学上显著的相关关系 ;在所研究的 3 0个月里 ,由于饮用水浑浊度的增加导致城市居民因患胃肠道疾病而寻求就诊的医疗费用增加了大约 10 %。 [结论 ]饮用水的浑浊度的增加可能会导致胃肠道疾病发生率增高 ,从而增加相应的医疗费用 [Objective] To study whether there is a correlation between the turbidity of urban drinking water and gastrointestinal diseases in the population, and if so, to estimate the increase in the medical expenses for the treatment of gastrointestinal diseases caused by turbidity . [Methods] The retrospective time series analysis model was used to analyze the relationship between the frequency of seeking treatment for gastrointestinal diseases during January 1994 to June 1996 (total of 30 months) and the change of drinking water turbidity. [Results] The first-level autoregressive data showed the first-order autoregressive results for the average turbidity of drinking water and the average number of weekly visits for medical attention caused by gastrointestinal discomfort. The mean turbidity of drinking water and the average number of weekly visits in the third week There was a statistically significant correlation; in the 30 months studied, medical costs for seeking treatment for urban residents suffering from gastrointestinal illnesses increased by about 10% due to increased levels of drinking water turbidity. [Conclusion] The increase of turbidity of drinking water may increase the incidence of gastrointestinal diseases, thus increasing the corresponding medical expenses