Differentials in death count records by databases in Brazil in 2010

ABSTRACT OBJECTIVE To compare the death counts from three sources of information on mortality available in Brazil in 2010, the Mortality Information System (SIM - Sistema de Informações sobre Mortalidade ), Civil Registration Statistic System (RC - Sistema de Estatísticas de Resgistro Civil ), and the 2010 Demographic Census at various geographical levels, and to confirm the association between municipal socioeconomic characteristics and the source which showed the highest death count. METHODS This is a descriptive and comparative study of raw data on deaths in the SIM, RC and 2010 Census databases, the latter held in Brazilian states and municipalities between August 2009 and July 2010. The percentage of municipalities was confirmed by the database showing the highest death count. The association between the source of the highest death count and socioeconomic indicators - the Índice de Privação Brasileiro (IBP – Brazilian Deprivation Index) and Índice de Desenvolvimento Humano Municipal (IHDM – Municipal Human Development Index) - was performed by bivariate choropleth and Moran Local Index of Spatial Association (LISA) cluster maps. RESULTS Confirmed that the SIM is the database with the highest number of deaths counted for all Brazilian macroregions, except the North, in which the highest coverage was from the 2010 Census. Based on the indicators proposed, in general, the Census showed a higher coverage of deaths than the SIM and the RC in the most deprived (highest IBP values) and less developed municipalities (lowest IDHM values) in the country. CONCLUSION The results highlight regional inequalities in how the databases chosen for this study cover death records, and the importance of maintaining the issue of mortality on the basic census questionnaire.

摘要
研究目的：比较2010年巴西可获取的三类死亡数据来源的死亡计数结果，三类来源分别为死亡信息系统（Mortality Information System，简称SIM）、民事登记统计系统（Civil Registration Statistic System，简称RC）以及2010年人口普查（2010 Demographic Census），并在不同地理层级上开展分析，同时验证市级社会经济特征与死亡计数最高的数据来源之间的关联。
研究方法：本研究为描述性比较研究，分析了2009年8月至2010年7月间巴西各州及市级的SIM、RC数据库与2010年人口普查数据库中的死亡原始数据。通过验证死亡计数最高的数据库所覆盖的市级占比，采用双变量分级统计图法以及局部空间莫兰自相关指数（Moran Local Index of Spatial Association，简称LISA）聚类图，分析死亡计数最高的数据来源与社会经济指标——巴西贫困指数（Brazilian Deprivation Index，简称IBP）以及市级人类发展指数（Municipal Human Development Index，简称IHDM）——之间的关联。
研究结果：本研究证实，除北部宏观区域外，SIM是巴西所有宏观区域中死亡计数最高的数据库，而北部宏观区域的死亡计数最高来源为2010年人口普查。基于本次采用的指标，整体而言，在巴西贫困指数（IBP）分值最高的贫困程度最深地区，以及市级人类发展指数（IHDM）分值最低的欠发达市级行政区中，人口普查的死亡覆盖范围均高于SIM与RC。
研究结论：本研究结果凸显了本次研究所选用的三类数据库在死亡记录覆盖方面存在的区域不平等性，同时证实了将死亡统计纳入人口普查基本问卷的重要性。