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Open Access Software

Accessing the public MIMIC-II intensive care relational database for clinical research

Daniel J Scott1, Joon Lee12*, Ikaro Silva1, Shinhyuk Park1, George B Moody1, Leo A Celi1 and Roger G Mark1

Author affiliations

1 Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA

2 School of Public Health and Health Systems, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada

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Citation and License

BMC Medical Informatics and Decision Making 2013, 13:9  doi:10.1186/1472-6947-13-9

Published: 10 January 2013

Abstract

Background

The Multiparameter Intelligent Monitoring in Intensive Care II (MIMIC-II) database is a free, public resource for intensive care research. The database was officially released in 2006, and has attracted a growing number of researchers in academia and industry. We present the two major software tools that facilitate accessing the relational database: the web-based QueryBuilder and a downloadable virtual machine (VM) image.

Results

QueryBuilder and the MIMIC-II VM have been developed successfully and are freely available to MIMIC-II users. Simple example SQL queries and the resulting data are presented. Clinical studies pertaining to acute kidney injury and prediction of fluid requirements in the intensive care unit are shown as typical examples of research performed with MIMIC-II. In addition, MIMIC-II has also provided data for annual PhysioNet/Computing in Cardiology Challenges, including the 2012 Challenge “Predicting mortality of ICU Patients”.

Conclusions

QueryBuilder is a web-based tool that provides easy access to MIMIC-II. For more computationally intensive queries, one can locally install a complete copy of MIMIC-II in a VM. Both publicly available tools provide the MIMIC-II research community with convenient querying interfaces and complement the value of the MIMIC-II relational database.

Keywords:
MIMIC-II; Relational database; Intensive care; Clinical research; SQL; Virtual machine