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Article History

Received: 28 September 2022

Accepted: 22 June 2023

First Online: 3 August 2023

Declarations

:

: This research was approved by the research ethics committee at the Institute of Collective Health, Federal University of Bahia (ISC-UFBA) (reference numbers 41695415.0.0000.5030 and 18022319.4.4.2319.4.5030), and the London School of Hygiene and Tropical Medicine, London, reference number 22817. This study exclusively employed secondary data. Secondary data from official information systems, made available for use in this project, were used in accordance with National Research Ethics Commission of the National Health Council standards, resolution 466 of December 2012. These standards define that use without the term of free and informed consent in health research, can be conducted in the impossibility of obtaining people’s consent, considering that the research offers minimal risks, and the rights or interests of those involved are not violated, and privacy and anonymity are preserved. All procedures to pre-process and link administrative data were performed in a secure room at CIDACS: an environment with strict security and data protection procedures that follow the regulatory framework and ethical standards established in Brazil. None of the researchers in this study had access to any personally identifiable information. All de-identified database was used for analyses, which can only be accessed by previously authorized researchers. All steps subsequent to obtaining data were performed following CIDACS information security protocols.

: Not applicable.

: The authors declare no competing interests.