The main death causes of elder patients were tumor, cardiovascular disease and digestive diseases.

肿瘤 、 循环系统疾病、损伤中毒是住院老年患者的主要死因.

Objective Effective measures can be taken to reduce or eliminate the death case of HFRS by reseaching and analyzing the death causes of patient of HFRS.

目的分析肾综合征出血热（HFRS）患者死亡原因，有针对性地采取措施，减少或消除死亡病例的发生。

Methods A cohort study was performed on the death causes of 921 vinyl chloride workers for a period of 40 years.

方法采用回顾前瞻性观察法，对921名氯乙烯作业工人进行了40年死因流行病学调查。

Methods The registered data of deaths during 2005 in Zhengzhou city was analyzed with death causes and PYLL analysis method.

方法运用全死因和PYLL分析方法对郑州市2005年死亡回顾调查的资料进行了分析。

ConclusionChronic non-communicable diseases(NCD), injury and poisoning had become the main death causes which seriously affected health status of residents in Juchao district.

结论慢性非传染性疾病和伤害已经成为本区居民的主要死因。