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Analyses on the Death Causes of Citizens in Tianxin District of Changsha from2006to2011

Author: LiQiong
Tutor: ZhouLiang
School: Central South University
Course: Public Health
Keywords: Tianxin District Citizen Surveillance for causes ofdeath Mortality level
CLC: R195
Type: Master's thesis
Year: 2012
Downloads: 20
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Abstract

Objective:To provide scientific evidence for the policy making of economic development and health resource allocation in Tianxin District of Changsha by describing the fluctuation in the mortality and rank of the death causes of citizens in Tianxin District, analyzing character of gender, age and cause-specific mortality, and discussing the major death cause of the citizens.Methods:All the death cases collected by the disease monitoring points in Tianxin District from1/January/2006to31/December/2011were treated as objects in the study. Annually average population was provided by Tianxin statistical bureau according to household registers. The data was analyzed to reveal the trait of the death, including socio-demographic characteristics, proportion of various death causes, mortality tendency, and major cause of death. The software DeathReg2005was applied in the surveillance of death causes which were categorized according to ICD-10, and then all the data were encoded and entered into the computer. Descriptive statistical analysis was implemented with SPSS software package17.0.Results:A total of12223deaths whose average age was70.21±15.99years old were collected from2006to2011, with a gender ratio of1.37(7065 males and5158females). Annually, the average crude mortality was496.60/105and the average growth rate was8.5%. Disease of the circulatory system made up most (43.2%) of all death cases and the specific mortality was215.12/105; neoplasms made up the second most (28.5%) and the specific mortality was138.18/105; the third most was diseases of respiratory system (11.4%) with a mortality of56.50/105; unclassified death cases (there are symptoms, signs and abnormal clinical and laboratory findings, but not elsewhere classified) made up2.4%which is conform to the requirement (<5%).The top forth causes of death kept unchanged during the six years, which were diseases of the circulatory system, neoplasms, diseases of the respiratory system, and external causes of morbidity and mortality, respectively. The mortality of the four diseases kept increasing year by year which reached234.28/105,164.72/105,67.29/105, and24.61/105in2011respectively.Gender-specific mortality of both male and female kept increasing, and the mortality of male was higher than that of female in each year. The top tenth causes of death of male were identical to that of female but the proportion was different. According to the household register in Tianxin, citizens were categorized by age into4groups:0-17years old,18-34years old,35-59years old and more than60years old. The proportion of death in each group was1.06%,1.88%,19.6%and77.46% respectively, and the mortality of each group was44.00/105,26.26/105,261.72/105, and2462.34/105respectively. The major causes of death in each group were different. For0-17group, the top third causes were: pregnancy, childbirth and the puerperium (25.6%); external causes of morbidity and mortality (23.3%); and congenital malformations, deformations and chromosomal abnormalities (13.2%). For18-34group, the top third were:external causes (43.0%); neoplasms (33.0%); and diseases of the circulatory system (5.7%). For35-59group, the top third were:neoplasms (44.7%); diseases of the circulatory system (26.8%); and external causes (11.4%). For more than60group, the top third were: diseases of the circulatory system (49.2%); neoplasms (23.9%); and diseases of the respiratory system (13.8%).Cause-specific mortality of diseases of the circulatory system was215.13/105; chronic ischaemic heart disease, intracerebral haemorrhage, acute myocardial infarction, cerebral infarction, and hypertensive heart disease were the major causes in this category. Mortality of neoplasms was138.18/105; malignant neoplasm of bronchus and lung, liver and intrahepatic bile ducts, stomach, oesophagus, and rectum were the major causes in cancer; specifically, breast cancer in female death was the third common. Mortality of external causes was26.32/105; fall on same level, transport accidence, intentional self-harm, and fall from building or structure were the major causes in injury. Mortality of endocrine, nutritional and metabolic diseases was12.72/105; non-insulin-dependent diabetes mellitus and other types of diabetes were the major causes.Conclusions:The top four causes of death of citizens in Tianxin varied among diseases of the circulatory system, neoplasms, diseases of the respiratory system, external causes of morbidity and mortality. Chronic ischaemic heart disease was the most common cause of death in diseases of the circulatory system; likewise, unspecified chronic bronchitis in respiratory diseases, non-insulin-dependent diabetes mellitus in endocrine diseases, and fall on same level in external causes.

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