Quality of child anthropometric data from SISVAN, Brazil, 2008-2017
DOI:
https://doi.org/10.11606/s1518-8787.2023057004655Keywords:
Data Reliability, Food and Nutrition Surveillance, Health Information Systems, Anthropometry, ChildAbstract
OBJECTIVE: To evaluate the quality of anthropometric data of children recorded in the Food and Nutrition Surveillance System (SISVAN) from 2008 to 2017. METHOD: Descriptive study on the quality of anthropometric data of children under five years of age admitted in primary care services of the Unified Health System, from the individual databases of SISVAN. Data quality was annually assessed using the indicators: coverage, completeness, sex ratio, age distribution, weight and height digit preference, implausible z-score values, standard deviation, and normality of z-scores. RESULTS: In total, 73,745,023 records and 29,852,480 children were identified. Coverage increased from 17.7% in 2008 to 45.4% in 2017. Completeness of birth date, weight, and height corresponded to almost 100% in all years. The sex ratio was balanced and approximately similar to the expected ratio, ranging from 0.8 to 1. The age distribution revealed higher percentages of registrations from the ages of two to four years until mid-2015. A preference for terminal digits “zero” and “five” was identified among weight and height records. The percentages of implausible z-scores exceeded 1% for all anthropometric indices, with values decreasing from 2014 onwards. A high dispersion of z-scores, including standard deviations between 1.2 and 1.6, was identified mainly in the indices including height and in the records of children under two years of age and residents in the North, Northeast, and Midwest regions. The distribution of z-scores was symmetric for all indices and platykurtic for height/age and weight/age. CONCLUSIONS: The quality of SISVAN anthropometric data for children under five years of age has improved substantially between 2008 and 2017. Some indicators require attention, particularly for height measurements, whose quality was lower especially among groups more vulnerable to nutritional problems.
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Copyright (c) 2023 Natanael de Jesus Silva, Juliana Freitas de Mello e Silva, Thaís Rangel Bousquet Carrilho, Elizabete de Jesus Pinto, Rafaella da Costa Santin de Andrade, Sara Araújo Silva, Jéssica Pedroso, Ana Maria Spaniol, Gisele Ane Bortolini, Andhressa Fagundes, Eduardo Augusto Fernandes Nilson, Rosemeire Leovigildo Fiaccone, Gilberto Kac, Maurício Lima Barreto, Rita de Cássia Ribeiro-Silva
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