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Article History

Received: 27 January 2020

Accepted: 1 September 2020

First Online: 14 September 2020

Ethics approval and consent to participate

: The study was approved by the Institutional Review Board of the Collective Health Institute, Federal University of Bahia (ICS-UFBA) (CAAE: 41695415.0.0000.5030).The present study exclusively employed secondary data. The respective owners of the administrative databases utilized have given Cidacs custody and permission to carry out research upon formal request, with the guarantee that all data processing occurs in a safe and private environment. All procedures for pre-processing and linking administrative data were performed in a secure room at CIDACS: an environment with strict security and data protection procedures that follows the regulatory framework and ethical standards established in Brazil. In order to access the data, each researcher needs to present a research project, ethical approval and a data plan in order to extract an unidentified/anonymized dataset for analysis. None of the researchers in this study had access to any personally identifiable information. For all analyzes, a de-identified database was used, which can only be accessed by previously authorized researchers. All steps subsequent to data obtaining were performed following CIDACS information security protocols.

: Not applicable.

: The authors deny the existence of any competing interests.