Cited by 182Statistics Education and MethodologiesStatistical Methods in EpidemiologyComplex Network Analysis Techniques

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The Spread of Evidence-Poor Medicine via Flawed Social-Network Analysis

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Lyons, Russell·2011·Statistics, Politics, and Policy

DOI 10.2202/2151-7509.1024

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Abstract

The chronic widespread misuse of statistics is usually inadvertent, not intentional. We find cautionary examples in a series of recent papers by Christakis and Fowler that advance statistical arguments for the transmission via social networks of various personal characteristics, including obesity, smoking cessation, happiness, and loneliness. Those papers also assert that such influence extends to three degrees of separation in social networks. We shall show that these conclusions do not follow from Christakis and Fowler's statistical analyses. In fact, their studies even provide some evidence against the existence of such transmission. The errors that we expose arose, in part, because the assumptions behind the statistical procedures used were insufficiently examined, not only by the authors, but also by the reviewers. Our examples are instructive because the practitioners are highly reputed, their results have received enormous popular attention, and the journals that published their studies are among the most respected in the world. An educational bonus emerges from the difficulty we report in getting our critique published. We discuss the relevance of this episode to understanding statistical literacy and the role of scientific review, as well as to reforming statistics education.

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Authors: Lyons, R.
Corresponding author: Lyons, Russell
ORCID: Lyons, Russell
Venue: Statistics, Politics, and Policy
Publisher: Walter de Gruyter GmbH
Published: 2011-01-18
Volume: 2
Issue: 1
ISSN: 2151-7509 (ISSN-L)
DOI: 10.2202/2151-7509.1024
OpenAlex: W2152314940
Cited by: 182
References: 25
Citations by year: 2026: 3 · 2025: 2 · 2024: 3 · 2023: 3 · 2022: 6 · 2021: 7 · 2020: 7 · 2019: 10 · 2018: 22 · 2017: 14 · 2016: 13 · 2015: 19 · 2014: 13 · 2013: 32 · 2012: 16
FWCI: 20.49
Type: journal article
Language: en
Open access: green
arxiv.org
Locations: Statistics Politics and Policy (publishedVersion)
arXiv (Cornell University) (submittedVersion)
arXiv (Cornell University)
Topics: Physical Sciences › Mathematics › Statistics and Probability › Statistics Education and Methodologies
Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Epidemiology
Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Complex Network Analysis Techniques
Keywords: social network analysis, evidence-based medicine, smoking cessation, happiness, loneliness, statistical methodology critique, statistical literacy, peer review, statistics education, misuse of statistics

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The Spread of Evidence-Poor Medicine via Flawed Social-Network Analysis

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