Evidence map›Paper›PMID 29327136›Full record

ArticleDrug safety2018

Signal Detection for Recently Approved Products: Adapting and Evaluating Self-Controlled Case Series Method Using a US Claims and UK Electronic Medical Records Database.

Xiaofeng Zhou, Ian J Douglas, Rongjun Shen, Andrew Bate

Abstract read
PubMed Publisher
In one paragraph

Article in Drug safety, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

4 authors.

Xiaofeng ZhouEpidemiology, Worldwide Safety and Regulatory, Pfizer Inc, 219 E. 42nd Street, Mail Stop 219/9/01, New York, NY, 10017, USA. xiaofeng.zhou@pfizer.com.ORCID 0000-0002-2109-0012
Ian J DouglasLondon School of Hygiene & Tropical Medicine, London, UK.
Rongjun ShenEpidemiology, Worldwide Safety and Regulatory, Pfizer Inc, 219 E. 42nd Street, Mail Stop 219/9/01, New York, NY, 10017, USA.
Andrew BateEpidemiology, Worldwide Safety and Regulatory, Pfizer Inc, 219 E. 42nd Street, Mail Stop 219/9/01, New York, NY, 10017, USA.

Funding

Medical Research Council G0802403
6 · The paper itself

Abstract

introductionThe Self-Controlled Case Series (SCCS) method has been widely used for hypothesis testing, but there is limited evidence of its performance for safety signal detection.

objectiveThe objective of this study was to evaluate SCCS for signal detection on recently approved products.

methodsA retrospective study covered the period after three recently marketed drugs were launched through to 31 December 2010 using The Health Improvement Network, a UK primary care database, and Optum, a US claims database. The SCCS method was applied to examine five heterogenous outcomes with desvenlafaxine and escitalopram and six outcomes with adalimumab for Signals of Disproportional Recording (SDRs); a positive finding was determined to be when the lower bound of 95% Confidence Interval of the incidence rate ratio (IRR) estimate was >  1. Multiple design choices were tested and the trend in IRR estimates over calendar time for one drug event pair was examined.

resultsAll six outcomes with adalimumab, three of five outcomes with desvenlafaxine, and four of five outcomes with escitalopram had SDRs. SCCS highlighted all acute events in the primary analysis but was less successful with slower-onset outcomes. Performance varied by risk period definition. Changes in IRR estimates over quarterly intervals for adalimumab with herpes zoster showed marked higher SDR within 9 months of drug launch.

conclusionSCCS shows promise for signal detection: it may highlight known associations for recent marketed products and has potential for early signal identification. SCCS performance varied by design choice and the nature of both exposure and event pair. Future work is needed to determine how effective the approach is in prospective testing and determining the performance characteristics of the approach.

Indexed as

Adverse Drug Reaction Reporting SystemsElectronic Health RecordsConsumer Product SafetyDatabases, FactualDrug-Related Side Effects and Adverse ReactionsFemaleHumansMaleMiddle AgedResearch DesignRetrospective StudiesRisk AssessmentUnited KingdomUnited States

Identifiers

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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.