Methods Data from the life information system of Yuzhou during 1974 ~ 2003 were analyzed (with SAS 6.12). Death causes are classified with ICD-9 Classification Standard.
方法采用禹州市1974 ~ 2003年生命统计信息库资料，按照ICD - 9国际标准进行死因分类，用SAS 6.12进行数据分析。
Methods The data of the dead inpatient were classified and analysed according to the ICD 9 International Disease Classification.
方法应用ICD- 9国际疾病分类法，对住院死亡患者的资料进行归类和分析。
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