[Validity and reliability of data and avoidability of the underlying cause of neonatal deaths in the intensive care unit of the North-Northeast Perinatal Care Network]

Classification systems for causes of stillbirth and neonatal death, 2009-2014: an assessment of alignment with characteristics for an effective global system

Background

To reduce the burden of 5.3 million stillbirths and neonatal deaths annually, an understanding of causes of deaths is critical. A systematic review identified 81 systems for classification of causes of stillbirth (SB) and neonatal death (NND) between 2009 and 2014. The large number of systems hampers efforts to understand and prevent these deaths. This study aimed to assess the alignment of current classification systems with expert-identified characteristics for a globally effective classification system.

Methods

Eighty-one classification systems were assessed for alignment with 17 characteristics previously identified through expert consensus as necessary for an effective global system. Data were extracted independently by two authors. Systems were assessed against each characteristic and weighted and unweighted scores assigned to each. Subgroup analyses were undertaken by system use, setting, type of death included and type of characteristic.

Results

None of the 81 systems were aligned with more than 9 of the 17 characteristics; most (82 %) were aligned with four or fewer. On average, systems were aligned with 19 % of characteristics. The most aligned system (Frøen 2009-Codac) still had an unweighted score of only 9/17. Alignment with individual characteristics ranged from 0 to 49 %. Alignment was somewhat higher for widely used as compared to less used systems (22 % v 17 %), systems used only in high income countries as compared to only in low and middle income countries (20 % vs 16 %), and systems including both SB and NND (23 %) as compared to NND-only (15 %) and SB-only systems (13 %). Alignment was higher with characteristics assessing structure (23 %) than function (15 %).

Conclusions

There is an unmet need for a system exhibiting all the characteristics of a globally effective system as defined by experts in the use of systems, as none of the 81 contemporary classification systems assessed was highly aligned with these characteristics. A particular concern in terms of global effectiveness is the lack of alignment with “ease of use” among all systems, including even the most-aligned. A system which meets the needs of users would have the potential to become the first truly globally effective classification system.

Electronic supplementary material

The online version of this article (doi:10.1186/s12884-016-1040-7) contains supplementary material, which is available to authorized users.

Utilização do métodolinkage na identificação dos fatores de risco associados à mortalidade infantil: revisão integrativa da literatura

A preocupação mundial em relação à mortalidade infantil ganhou visibilidade com a divulgação no ano 2000 dos Objetivos do Desenvolvimento do Milênio, em que sua redução ganha destaque com a meta de número quatro, que propõe diminuir em dois terços sua taxa para crianças menores de cinco anos, no período entre 1990 e 2015. Reduzir a mortalidade infantil tem sido uma das prioridades das políticas sociais de saúde do governo brasileiro. A identificação de fatores de risco relacionados com a mortalidade infantil pode auxiliar no planejamento de ações para a reestruturação e melhoria da assistência à gestante e aos recém-nascidos, visando à redução da mortalidade infantil. Nesta perspectiva, o presente estudo tem como objetivo analisar a utilização do método de linkage na identificação de fatores de risco associados à mortalidade infantil. Utilizou-se a Revisão Integrativa da Literatura. Foram analisados oito artigos na íntegra publicados entre 2008 e 2013, através dos descritores: mortalidade infantil, fatores de risco e sistemas de informação. O uso da técnica de linkage mostrou-se bastante útil, permitindo a adequada investigação dos fatores mais fortemente relacionados à mortalidade infantil, mostrando sua relevância para o estudo de problemas de saúde pública.

Agreement on underlying causes of infant death between original records and after investigation: analysis of two biennia in the years 2000

OBJECTIVE

To analyze the agreement between underlying causes of infant deaths obtained from Death Certificates (DC) with those defined after investigation by the Municipal Committee for the Prevention of Maternal and Infant Mortality (CMPMMI), in Londrina, Paraná State, in the biennia 2000-2001 and 2007-2008.

METHODS

DC of infants and records of investigations were obtained from the CMPMMI. The causes of death registered in both sources were coded according to the International Classification of Diseases, tenth revision (ICD-10), and the underlying causes of deaths were selected. Agreement between underlying causes of deaths was verified by Kappa's (k) test and analyzed according to ICD-10 chapters and blocks of categories in both biennia.

RESULTS

In 2000/2001, according to ICD-10 chapters, high agreement rates were observed for conditions originated in the perinatal period (k = 0.85) and for external causes (k = 0.84), while, for congenital malformations, there was a substantial agreement (k = 0.71). In 2007/2008, agreement was considered poor for all analyzed chapters. For blocks of categories, high or substantial agreement rates were observed only in the first biennium for "congenital malformations of the circulatory system" (k = 0.78) and for "other external causes of accidental injury" (k = 0.91).

CONCLUSIONS

A decrease in agreement between the sources during the study period indicates either an improvement in the process of investigation of infant death by the CMPMMI and/or a worsening in the quality of the DC information.