A SYSTEMATIC REVIEW OF OUTLIERS DETECTION TECHNIQUES IN MEDICAL DATA - Preliminary Study

Juliano Gaspar, Emanuel Catumbela, Bernardo Marques, Alberto Freitas

2011

Abstract

Background: Patient medical records contain many entries relating to patient conditions, treatments and lab results. Generally involve multiple types of data and produces a large amount of information. These databases can provide important information for clinical decision and to support the management of the hospital. Medical databases have some specificities not often found in others non-medical databases. In this context, outlier detection techniques can be used to detect abnormal patterns in health records (for instance, problems in data quality) and this contributing to better data and better knowledge in the process of decision making. Aim: This systematic review intention to provide a better comprehension about the techniques used to detect outliers in healthcare data, for creates automatisms for those methods in the order to facilitate the access to information with quality in healthcare. Methods: The literature was systematically reviewed to identify articles mentioning outlier detection techniques or anomalies in medical data. Four distinct bibliographic databases were searched: Medline, ISI, IEEE and EBSCO. Results: From 4071 distinct papers selected, 80 were included after applying inclusion and exclusion criteria. According to the medical specialty 32% of the techniques are intended for oncology and 37% of them using patient data. Considering only articles that used administrative medical data, 59% of the techniques were statistical based. Conclusion: The area with outliers detection techniques most widely used in medical administrative data is the statistics, when compared with techniques from data mining such as clustering and nearest neighbor.

Paper Citation

in Harvard Style

Gaspar J., Catumbela E., Marques B. and Freitas A. (2011). A SYSTEMATIC REVIEW OF OUTLIERS DETECTION TECHNIQUES IN MEDICAL DATA - Preliminary Study . In Proceedings of the International Conference on Health Informatics - Volume 1: HEALTHINF, (BIOSTEC 2011) ISBN 978-989-8425-34-8, pages 575-582. DOI: 10.5220/0003168705750582

in Bibtex Style

@conference{healthinf11,
author={Juliano Gaspar and Emanuel Catumbela and Bernardo Marques and Alberto Freitas},
title={A SYSTEMATIC REVIEW OF OUTLIERS DETECTION TECHNIQUES IN MEDICAL DATA - Preliminary Study},
booktitle={Proceedings of the International Conference on Health Informatics - Volume 1: HEALTHINF, (BIOSTEC 2011)},
year={2011},
pages={575-582},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003168705750582},
isbn={978-989-8425-34-8},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Health Informatics - Volume 1: HEALTHINF, (BIOSTEC 2011)
TI - A SYSTEMATIC REVIEW OF OUTLIERS DETECTION TECHNIQUES IN MEDICAL DATA - Preliminary Study
SN - 978-989-8425-34-8
AU - Gaspar J.
AU - Catumbela E.
AU - Marques B.
AU - Freitas A.
PY - 2011
SP - 575
EP - 582
DO - 10.5220/0003168705750582