为了解卫生行政统计部门按年度汇总所辖医院法定传染病住院病例数与卫生防疫部门收集、统计的医院住院病人法定传染病发病数差别及造成差别的原因，遂进行了调查，结果报告如下。１资料与方法由地区卫生行政统计部门提供１９９３～１９９６年度“卫生部门医院住院病人分类... For the purpose of understanding how the number of statutory communicable diseases in hospitals under the jurisdiction of the health administrative and statistical department and the number of hospital statutory communicable diseases collected and counted by the health and epidemic prevention departments, and the reasons for the differences, were investigated. The results are reported below. 1 Materials and Methods Provided by the Department of Health Administration and Statistics of the Ministry of Health from 1993 to 1996