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Table 1 Overview of data sources

From: Record linkage under suboptimal conditions for data-intensive evaluation of primary care in Rio de Janeiro, Brazil

Database Social Benefits National Registry (Cadastro Único—CadU) Family Health Registry (Sistema de Cadastro da Estratégia de Saúde da Família—FHR) Eletronic Medical Registry (Prontuário Eletrônico de Pacientes—EMR) National Hospital Admission System (Sistema de Informações Hospitalares—SIH) National Mortality Information System (Sistema de Informações sobre Mortalidade—SIM)a
Time period 2008–2014 2009–2016 2011–2017 2011–2016 1999–2016
Database size 1,680,700 registrations—1,679,320 individuals 3,732,688 registrations—3,594,623 individuals 17,764,475 consultations—16,808,685 single consultations 1,787,601 hospitalizations 2,263,964 deaths
Personal identifiers Name; Date of birth; Mother’s name; Address; Social Security Number (Cadastro de pessoa física—CPF); National register for social benefit (Número de inscrição social—NIS) Name; Date of birth; Mother’s name; Address; Social Security Number (Cadastro de pessoa física—CPF); National register for social benefit (Número de inscrição social—NIS) Name; Date of birth; Social Security Number (Cadastro de pessoa física—CPF) Name; Date of birth; Mother’s name; Address Name; Date of birth; Mother’s name; Address
Content variables Demographic characteristics, detailed socioeconomic, and housing data Demographic characteristics, detailed socioeconomic, housing data, self-reported chronic diseases, a summary of health care used, vital status Patient data (e.g., demographic characteristics), the reason for encounter, laboratory and test requests, treatment plans Patient data (e.g., demographic characteristics); hospital data (e.g., public or private); hospitalization data (e.g., admission and discharge dates, intermediary unit use, diagnosis upon discharge) Demographic characteristics, socioeconomic data, date of death, cause of death, data on mother in the case of fetal death, and death of children under 1 year
  1. aDatabase from Rio de Janeiro State; all others from Rio de Janeiro City