Evidence map›Paper›PMID 35396714›Full record

ArticleStatistics in medicine2022

How large should the next study be? Predictive power and sample size requirements for replication studies.

Erik W van Zwet, Steven N Goodman

Abstract read
In one paragraph

Article in Statistics in medicine, 2022. 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
–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. Article
  2. Article
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  4. Assessing the replicability of RCTs in RWE emulations.BMC medical research methodology · 2025
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  5. Article
  6. Article
  7. Article
  8. Review
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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

2 authors.

Erik W van ZwetDepartment of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands.ORCID 0000-0001-5537-3179
Steven N GoodmanDepartments of Epidemiology and Population Health and of Medicine, Stanford University, Stanford, California, USA.ORCID 0000-0002-3872-5723

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We use information derived from over 40K trials in the Cochrane Collaboration database of systematic reviews (CDSR) to compute the replication probability, or predictive power of an experiment given its observed (two-sided)

Indexed as

Research DesignSample SizeHumansProbabilityStatistics as TopicSystematic Reviews as Topicactual powerclinical trialCochrane Reviewpredictive powertype S error

Identifiers

PMID35396714
PMCPMC9325423

What OpenQuestion holds

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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.