Epidemiology of sudden unexpected death in infancy in Argentina: secular trend and spatial variation.

Abstract:

Introduction:Infant mortality comprises deaths among infants younger than one year old. The proportion of sudden unexpected death in infancy (SUDI) varies by country and based on the cause of death. Objective:To describe the spatial and temporal variation of SUDI in Argentina between 1991 and 2014 according to the International Classification of Diseases, tenth revision. Materials and methods:Based on infant death data (provided by the Health Statistics and Information Department), we estimated the percentage of SUDI over the total number of infant deaths and the frequency of causes of death at a provincial, regional, and national level. The risk for death and the secular trend were estimated using a Poisson regression. The SaTScan software, v9.1.1, was used to detect clusters of districts where the percentage of SUDI was significantly different from the national percentage. Results:In Argentina, between 1991 and 2014, 267 552 infants younger than 1 year died; 7 % corresponded to SUDI; the secular trend of causes was negative and statistically significant; the risk for SUDI was 0.86, and a great spatial heterogeneity was observed. At a national level, the most common cause was sudden infant death syndrome, with inter-regional differences. In nine district clusters, the risk for SUDI ranged between 4.36 and 1.24, which is significantly different from the rest of the country. Conclusions:The proportion of SUDI and its causes show inter-regional heterogeneity; codes related to inaccurate diagnoses predominated in more unfavorable regions, while sudden infant death syndrome was prevalent in the more developed regions. :Introducción. La mortalidad infantil incluye defunciones de menores de un año. La proporción de muerte súbita inesperada infantil (MSII) varía entre países y según las causas de muerte consideradas. Objetivo. Describir la variación espacial y temporal de MSII en Argentina entre 1991 y 2014 utilizando la Clasificación Internacional de Enfermedades, décima revisión. Materiales y métodos. A partir de la información de defunciones infantiles (Dirección de Estadísticas e Información de Salud), se calculó el porcentaje de MSII sobre el total de muertes infantiles y la frecuencia de las causas que la componían a nivel nacional, regional y provincial. El riesgo de muerte y la tendencia secular se calcularon con regresión de Poisson. Para detectar agrupamientos departamentales con porcentajes de MSII significativamente diferentes a los nacionales, se utilizó el programa SaTScan v9.1.1. Resultados. En Argentina, entre 1991 y 2014, fallecieron 267 552 menores de un año; el 7 % fueron MSII; la tendencia secular de estas causas fue negativa y estadísticamente significativa; el riesgo de MSII fue de 0,86, y se observó una gran heterogeneidad espacial. A nivel nacional, la causa más frecuente fue síndrome de la muerte súbita del lactante, con diferencias interregionales. Nueve agrupamientos departamentales tuvieron riesgo de MSII entre 4,36 y 1,24, significativamente diferentes al resto del país. Conclusiones. La proporción de MSII y de las causas que la componen presenta heterogeneidad interregional con predominio de códigos relacionados con diagnósticos imprecisos en las regiones más desfavorecidas y de síndrome de muerte súbita del lactante en las más desarrolladas.

journal_name

Arch Argent Pediatr

authors

Chapur VF,Alfaro EL,Bronberg R,Dipierri JE

doi

10.5546/aap.2019.eng.164

subject

Has Abstract

pub_date

2019-06-01 00:00:00

pages

164-170

issue

3

eissn

0325-0075

issn

1668-3501

journal_volume

117

pub_type

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