Quality of data from leprosy registries in indigenous populations in the Indigenous Health Care Information System, Brazil, 2010 to 2023
DOI:
https://doi.org/10.1590/SciELOPreprints.15851Keywords:
Leprosy, Indigenous health, Data qualityAbstract
Objective: To describe the completeness, consistency, and non-duplication of leprosy records in the Indigenous Health Care Information System – Siasi. Methods: This was an evaluative and descriptive study of the quality of data from leprosy registries in Siasi, in indigenous populations served by the Indigenous Health Care Subsystem - SasiSUS, from January 2010 to December 2023. The scores used were: for acceptable percentage duplicity up to 5.0%; for completeness, excellent (>90%), good (75% to 89.9%), regular (50% to 74.9%) and poor (<49.9%) grade; and for consistency, excellent (>90%); regular (70% to 89%); and low (<70%). Results: Of the 531 leprosy records in Siasi, 11.7% were identified as probable duplicates. Regarding completeness, the socio-demographic variables were 100% filled in; of the 16 clinical-epidemiological variables, 56.25% had a degree of regular completeness. In the evaluation of consistency, seven pairs were performed between variables with coherence considered excellent in four pairings. Conclusion: The proportion of duplicates was above the acceptable level, most of the variables presented regular completeness and regular or excellent consistencies. There was a high occurrence of blank data, which may influence this result. Siasi is an important system for indigenous health, but problems in the quality of the data disfavor its use for decision-making in the fight against leprosy. The results demonstrate the need to improve the system to avoid duplication of records, inconsistencies or absence of data. Periodic training of professionals to fill in the data and feed the system may contribute to improve the deficient aspects evidenced in the study.
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Copyright (c) 2026 Adriana Regina Farias Pontes Lucena, Ciro Martins Gomes, Gustavo Adolfo Sierra Romero

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Data statement
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The research data cannot be made publicly available
- The initial database of leprosy records from the Indigenous Health Care Information System can be accessed through the Ministry of Health’s Citizen Information Service. However, the adjusted database cannot be made available, given that the steps followed required analyses and decisions made through manual evaluation of each record. Initially, in the evaluation and identification of probable duplicates, a sequence of criteria was followed for the definitions; but a limitation related to the lack of deterministic variables for duplicates led to analyses that required the researcher to define criteria for identifying probable duplicates, which may introduce a bias of subjectivity in this definition, given the need to evaluate all variables across records to decide whether to confirm or rule out a duplicate.
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The research data is available on demand, condition justified in the manuscript


