Evidence map›Paper›PMID 19567795›Full record

ArticleJournal of the American Medical Informatics Association : JAMIA

A globally optimal k-anonymity method for the de-identification of health data.

Khaled El Emam, Fida Kamal Dankar, Romeo Issa, Elizabeth Jonker, Daniel Amyot, Elise Cogo, Jean-Pierre Corriveau, Mark Walker, Sadrul Chowdhury, Regis Vaillancourt and 2 more

Abstract readComparative StudyEvaluation Study
In one paragraph

Article in Journal of the American Medical Informatics Association : JAMIA. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

54 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  8. The Costs of Anonymization: Case Study Using Clinical Data.Journal of medical Internet research · 2024
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  9. Enabling Health Data Sharing with Fine-Grained Privacy.Proceedings of the ... ACM International Conference on Information & Knowledge Management. ACM International Conference on Information and Knowledge Management · 2023
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  16. Ensuring electronic medical record simulation through better training, modeling, and evaluation.Journal of the American Medical Informatics Association : JAMIA · 2020
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Khaled El EmamCHEO Research Institute, 401 Smyth Road, Ott, ON K1H8L1, Canada. kelemam@uottawa.ca
Fida Kamal Dankar
Romeo Issa
Elizabeth Jonker
Daniel Amyot
Elise Cogo
Jean-Pierre Corriveau
Mark Walker
Sadrul Chowdhury
Regis Vaillancourt
Tyson Roffey
Jim Bottomley

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExplicit patient consent requirements in privacy laws can have a negative impact on health research, leading to selection bias and reduced recruitment. Often legislative requirements to obtain consent are waived if the information collected or disclosed is de-identified.

objectiveThe authors developed and empirically evaluated a new globally optimal de-identification algorithm that satisfies the k-anonymity criterion and that is suitable for health datasets.

designAuthors compared OLA (Optimal Lattice Anonymization) empirically to three existing k-anonymity algorithms, Datafly, Samarati, and Incognito, on six public, hospital, and registry datasets for different values of k and suppression limits. Measurement Three information loss metrics were used for the comparison: precision, discernability metric, and non-uniform entropy. Each algorithm's performance speed was also evaluated.

resultsThe Datafly and Samarati algorithms had higher information loss than OLA and Incognito; OLA was consistently faster than Incognito in finding the globally optimal de-identification solution.

conclusionsFor the de-identification of health datasets, OLA is an improvement on existing k-anonymity algorithms in terms of information loss and performance.

Indexed as

AlgorithmsConfidentialityMedical Records Systems, ComputerizedAdolescentAdultFemaleHumansInformation Storage and RetrievalMale

Identifiers

PMID19567795
PMCPMC2744718

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.