Evidence map›Paper›PMID 34767748›Full record

ArticleStem cell reports2021

Weighing up the evidence used by direct-to-consumer stem cell businesses.

Margaret Cook, Alexandra Richey, David A Brafman, Emma K Frow

Open access · goldAbstract read
In one paragraph

Article in Stem cell reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.4field-weighted citation impact, top 18% 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

7 citing papers in PubMed, 13 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

4 authors at 1 institution in 1 country.

Margaret CookSchool of Biological & Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA.
Alexandra RicheySchool of Biological & Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA.
David A BrafmanSchool of Biological & Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA.
Emma K FrowSchool of Biological & Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA; School for the Future of Innovation in Society, Arizona State University, Tempe, AZ 85287, USA. Electronic address: emma.frow@asu.edu.
Arizona State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hundreds of businesses across the United States offer direct-to-consumer stem-cell-based interventions that have not been approved by the Food and Drug Administration. Here, we characterize the types of evidence used on the websites of 59 stem cell businesses in the Southwest United States to market their services. We identify over a dozen forms of evidence, noting that businesses are less likely to rely on "gold-standard" scientific evidence, like randomized clinical trials, and instead draw substantially on forms of evidence that we identify as being "ambiguous." Ambiguous evidence has some scientific or medical basis, but its interpretation is highly context-dependent. These findings highlight the interpretive responsibility placed on prospective patients. We identify actions for regulators and professional societies to assist with evaluating evidence, but caution that focusing on the (in)validity of particular evidence types is unlikely to eliminate demand for stem-cell-based treatments in this complex marketplace.

Indexed as

Direct-to-Consumer AdvertisingHumansPeer Review, ResearchPeriodicals as TopicStem Cellsdirect-to-consumerevidenceexpertiseFDApolicyregulationstem-cell-based interventionsstem cell clinics

Identifiers

PMID34767748
PMCPMC8693621
OpenAlexW3214461813

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.