Abstract
Bipolar Disorder (BD) is a mental disorder which frequently requires long hospitalizations and need for acute psychiatric care. The aim of this study was to describe a nationwide perspective of BD related hospitalizations and to use a BigData based approach in mental health research. We performed a retrospective observational study using a nationwide hospitalization database containing all hospitalizations registered in Portuguese public hospitals from 2008-2015. Hospitalizations with a primary diagnosis of BD were selected based on International Classification of Diseases version 9, Clinical Modification (ICD-9-CM) codes of diagnosis 296.xx (excluding 296.2x; 296.3x and 296.9x). From 20,807 hospitalizations belonging to 13,300 patients, around 33.4% occurred in male patients with a median length of stay of 16.0 days and a mean age of 47.9 years. The most common hospitalization diagnosis in BD has the code 296.4x (manic episode) representing 34.3% of all hospitalizations, followed by the code 296.5x (depressed episode) with 21.4%. The mean estimated hospitalization charge was 3,508.5€ per episode, with a total charge of 73M€ in the 8-year period of this study.This is a nationwide study giving a broad perspective of the BD hospitalization panorama at a national level. We found important differences in hospitalization characteristics by sex, age and primary diagnosis.
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Data was provided by ACSS - Administração Central do Sistema de Saúde I.P upon formal request.
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The authors used IBM SPSS Statistics v.25 for Windows (Armonk, NY: IBM Corp) for statistical analysis.
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Acknowledgements
We would like to acknowledge ACSS - Administração Central do Sistema de Saúde I.P. for providing the administrative database used in this research.
Funding
This work was financed by FEDER - Fundo Europeu de Desenvolvimento Regional funds through the COMPETE 2020 - Operacional Programme for Competitiveness and Internationalisation (POCI), and by Portuguese funds through FCT - Fundação para a Ciência e Tecnologia in the framework of the project POCI-01-0145-FEDER-030766 (“1st.IndiQare - Quality indicators in primary health care: validation and implementation of quality indicators as an assessment and comparison tool”). This article was supported by National Funds through FCT - Fundação para a Ciência e a Tecnologia,I.P., within CINTESIS, R&D Unit (reference UIDB/4255/2020).
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Author Manuel Gonçalves-Pinho designed the study and participated in all phases of the study. Author João Pedro Ribeiro and Orlando von Doellinger participated in the clinical analyses and writing of the paper. Authors Manuel Gonçalves-Pinho and Alberto Freitas undertook the statistical analysis, and author Manuel Gonçalves-Pinho wrote the first draft of the manuscript. All authors contributed to and have approved the final manuscript.
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The data used was given by a Portuguese governmental agency guaranteeing all identification information was anonymous.
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Gonçalves-Pinho, M., Freitas, A., von Doellinger, O. et al. Bipolar Disorder Related Hospitalizations – a Descriptive Nationwide Study Using a Big Data Approach. Psychiatr Q 93, 325–333 (2022). https://doi.org/10.1007/s11126-021-09951-6
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DOI: https://doi.org/10.1007/s11126-021-09951-6