Evidence map›Paper›PMID 31128829›Full record

ArticleInternational journal of medical informatics2019

The use of natural language processing to identify Tdap-related local reactions at five health care systems in the Vaccine Safety Datalink.

Chengyi Zheng, Wei Yu, Fagen Xie, Wansu Chen, Cheryl Mercado, Lina S Sy, Lei Qian, Sungching Glenn, Gina Lee, Hung Fu Tseng and 6 more

Open access · greenAbstract read
In one paragraph

Article in International journal of medical informatics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.9field-weighted citation impact, top 16% of its field
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

12 citing papers in PubMed, 27 citations in OpenAlex.

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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

16 authors at 3 institutions in 1 country.

Chengyi ZhengKaiser Permanente Southern California, Pasadena, CA, USA. Electronic address: Chengyi.X.Zheng@kp.org.
Wei YuKaiser Permanente Southern California, Pasadena, CA, USA.
Fagen XieKaiser Permanente Southern California, Pasadena, CA, USA.
Wansu ChenKaiser Permanente Southern California, Pasadena, CA, USA.
Cheryl MercadoKaiser Permanente Southern California, Pasadena, CA, USA.
Lina S SyKaiser Permanente Southern California, Pasadena, CA, USA.
Lei QianKaiser Permanente Southern California, Pasadena, CA, USA.
Sungching GlennKaiser Permanente Southern California, Pasadena, CA, USA.
Gina LeeKaiser Permanente Southern California, Pasadena, CA, USA.
Hung Fu TsengKaiser Permanente Southern California, Pasadena, CA, USA.
Jonathan DuffyCenters for Disease Control and Prevention, Atlanta, GA, USA.
Lisa A JacksonKaiser Permanente Washington, Seattle, WA, USA.
Matthew F DaleyKaiser Permanente Colorado, Denver, CO, USA.
Brad CraneKaiser Permanente Northwest, Portland, OR, USA.
Huong Q McLeanMarshfield Clinic Research Institute, Marshfield, WI, USA.
Steven J JacobsenKaiser Permanente Southern California, Pasadena, CA, USA.
Kaiser Permanente · USCenters for Disease Control and Prevention · USMarshfield Clinic · US

Funding

Intramural CDC HHS CC999999
6 · The paper itself

Abstract

objectiveLocal reactions are the most common vaccine-related adverse event. There is no specific diagnosis code for local reaction due to vaccination. Previous vaccine safety studies used non-specific diagnosis codes to identify potential local reaction cases and confirmed the cases through manual chart review. In this study, a natural language processing (NLP) algorithm was developed to identify local reaction associated with tetanus-diphtheria-acellular pertussis (Tdap) vaccine in the Vaccine Safety Datalink.

methodsPresumptive cases of local reactions were identified among members ≥ 11 years of age using ICD-9-CM codes in all care settings in the 1-6 days following a Tdap vaccination between 2012 and 2014. The clinical notes were searched for signs and symptoms consistent with local reaction. Information on the timing and the location of a sign or symptom was also extracted to help determine whether or not the sign or symptom was vaccine related. Reactions triggered by causes other than Tdap vaccination were excluded. The NLP algorithm was developed at the lead study site and validated on a stratified random sample of 500 patients from five institutions.

resultsThe NLP algorithm achieved an overall weighted sensitivity of 87.9%, specificity of 92.8%, positive predictive value of 82.7%, and negative predictive value of 95.1%. In addition, using data at one site, the NLP algorithm identified 3326 potential Tdap-related local reactions that were not identified through diagnosis codes.

conclusionThe NLP algorithm achieved high accuracy, and demonstrated the potential of NLP to reduce the efforts of manual chart review in vaccine safety studies.

Indexed as

Diphtheria-Tetanus-acellular Pertussis VaccinesNatural Language ProcessingChildFemaleHumansMaleVaccinationWhooping CoughDiphtheria-Tetanus-acellular Pertussis VaccinesClinical notesElectronic health recordNatural language processingVaccine adverse eventVaccine safety

Identifiers

PMID31128829
PMCPMC6645678
OpenAlexW2939717938

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.