Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Randomized Controlled Trial
. 2020 Feb 20;10(2):e033655.
doi: 10.1136/bmjopen-2019-033655.

Adding evidence of the effects of treatments into relevant Wikipedia pages: a randomised trial

Affiliations
Randomized Controlled Trial

Adding evidence of the effects of treatments into relevant Wikipedia pages: a randomised trial

Clive E Adams et al. BMJ Open. .

Abstract

Objectives: To investigate the effects of adding high-grade quantitative evidence of outcomes of treatments into relevant Wikipedia pages on further information-seeking behaviour by the use of routinely collected data.

Setting: Wikipedia, Cochrane summary pages and the Cochrane Library.

Design: Randomised trial.

Participants: Wikipedia pages which were highly relevant to up-to-date Cochrane Schizophrenia systematic reviews that contained a Summary of Findings table.

Interventions: Eligible Wikipedia pages in the intervention group were seeded with tables of best evidence of the effects of care and hyperlinks to the source Cochrane review. Eligible Wikipedia pages in the control group were left unchanged.

Main outcome measures: Routinely collected data on access to the full text and summary web page (after 12 months).

Results: We randomised 70 Wikipedia pages (100% follow-up). Six of the 35 Wikipedia pages in the intervention group had the tabular format deleted during the study but all pages continued to report the same data within the text. There was no evidence of effect on either of the coprimary outcomes: full-text access adjusted ratio of geometric means 1.30, 95% CI: 0.71 to 2.38; page views 1.14, 95% CI: 0.6 to 2.13. Results were similar for all other outcomes, with exception of Altmetric score for which there was some evidence of clear effect (1.36, 95% CI: 1.05 to 1.78).

Conclusions: The pursuit of fair balance within Wikipedia healthcare pages is impressive and its reach unsurpassed. For every person who sought and clicked the reference on the 'intervention' Wikipedia page to seek more information (the primary outcome), many more are likely to have been informed by the page alone. Enriching Wikipedia content is, potentially, a powerful way to improve health literacy and it is possible to test the effects of seeding pages with evidence. This trial should be replicated, expanded and developed.

Trial registration number: IRCT2017070330407N2.

Keywords: medical education & training; schizophrenia & psychotic disorders; world wide web technology.

PubMed Disclaimer

Conflict of interest statement

Competing interests: All posts and edits were undertaken by the user Lena08041993, with any conflicts of interest and affiliation of this account with the Cochrane Schizophrenia Group clearly declared on the user’s talk page (https://en.wikipedia.org/wiki/User:Lena08041993). DT is affiliated to the Wikimedia Foundation.

Figures

Figure 1
Figure 1
Sample of embedded table.
Figure 2
Figure 2
Consolidated Standards of Reporting Trials flow diagram.

References

    1. Wikipedia Wikipedia:About [Internet], 2019. Available: https://en.wikipedia.org/w/index.php?title=Wikipedia:About&oldid=922393621 [Accessed 13 Nov 2019].
    1. Wikipedia Wikipedia:Size of Wikipedia [Internet], 2018. Available: https://en.wikipedia.org/w/index.php?title=Wikipedia:Size_of_Wikipedia&o... [Accessed 3 Dec 2018].
    1. Monica A, Paul H, Michelle A. Wikipedia at 15: Millions of readers in scores of languages [Internet]. Pew Research Center. Available: http://www.pewresearch.org/fact-tank/2016/01/14/wikipedia-at-15/ [Accessed 3 Dec 2018].
    1. Wikimedia Statistics - All wikis [Internet]. Available: https://stats.wikimedia.org/v2/#/all-projects [Accessed 3 Dec 2018].
    1. Alexa Top 500 Global Sites [Internet]. Available: http://www.alexa.com/topsites [Accessed 10 Apr 2010].

Publication types