Skip to main content

Main menu

  • Home
  • Content
    • Current issue
    • Past issues
    • Early releases
    • Collections
    • Sections
    • Blog
    • Infographics & illustrations
    • Podcasts
    • COVID-19 articles
    • Obituary notices
  • Authors & Reviewers
    • Overview for authors
    • Submission guidelines
    • Submit a manuscript
    • Forms
    • Editorial process
    • Editorial policies
    • Peer review process
    • Publication fees
    • Reprint requests
    • Open access
    • Patient engagement
  • Physicians & Subscribers
    • Benefits for Canadian physicians
    • CPD Credits for CMA Members
    • Subscribe to CMAJ Print
    • Subscription prices
    • Obituary notices
  • Alerts
    • Email alerts
    • RSS
  • JAMC
    • À propos
    • Numéro en cours
    • Archives
    • Sections
    • Abonnement
    • Alertes
    • Trousse média 2023
    • Avis de décès
  • CMAJ JOURNALS
    • CMAJ Open
    • CJS
    • JAMC
    • JPN

User menu

Search

  • Advanced search
CMAJ
  • CMAJ JOURNALS
    • CMAJ Open
    • CJS
    • JAMC
    • JPN
CMAJ

Advanced Search

  • Home
  • Content
    • Current issue
    • Past issues
    • Early releases
    • Collections
    • Sections
    • Blog
    • Infographics & illustrations
    • Podcasts
    • COVID-19 articles
    • Obituary notices
  • Authors & Reviewers
    • Overview for authors
    • Submission guidelines
    • Submit a manuscript
    • Forms
    • Editorial process
    • Editorial policies
    • Peer review process
    • Publication fees
    • Reprint requests
    • Open access
    • Patient engagement
  • Physicians & Subscribers
    • Benefits for Canadian physicians
    • CPD Credits for CMA Members
    • Subscribe to CMAJ Print
    • Subscription prices
    • Obituary notices
  • Alerts
    • Email alerts
    • RSS
  • JAMC
    • À propos
    • Numéro en cours
    • Archives
    • Sections
    • Abonnement
    • Alertes
    • Trousse média 2023
    • Avis de décès
  • Visit CMAJ on Facebook
  • Follow CMAJ on Twitter
  • Follow CMAJ on Instagram
  • Listen to CMAJ podcasts
Letters

Selection bias

Michael S. Jansz
CMAJ May 08, 2017 189 (18) E673; DOI: https://doi.org/10.1503/cmaj.732958
Michael S. Jansz
Resident, Vancouver Coastal Health, Vancouver, BC
MD MSc
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • Article
  • Responses
  • Metrics
  • PDF
Loading

In a recent research article in CMAJ,1 the study population consists entirely of ill travellers self-reporting to a travel clinic upon their return. It seems likely that this would select patients who were either sufficiently unwell or sufficiently worried about their illness to seek medical attention. In light of this, I find it unsurprising that this study1 observed a higher incidence of complicated disease than that seen in endemic areas.

Footnotes

  • Competing interests: None declared.

Reference

  1. ↵
    1. Boggild AK,
    2. Geduld J,
    3. Libman M,
    4. et al
    . Surveillance report of Zika virus among Canadian travellers returning from the Americas. CMAJ 2017; 189: E334–40.
    OpenUrlAbstract/FREE Full Text
PreviousNext
Back to top

In this issue

Canadian Medical Association Journal: 189 (18)
CMAJ
Vol. 189, Issue 18
8 May 2017
  • Table of Contents
  • Index by author

Article tools

Respond to this article
Print
Download PDF
Article Alerts
To sign up for email alerts or to access your current email alerts, enter your email address below:
Email Article

Thank you for your interest in spreading the word on CMAJ.

NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.

Enter multiple addresses on separate lines or separate them with commas.
Selection bias
(Your Name) has sent you a message from CMAJ
(Your Name) thought you would like to see the CMAJ web site.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Citation Tools
Selection bias
Michael S. Jansz
CMAJ May 2017, 189 (18) E673; DOI: 10.1503/cmaj.732958

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
‍ Request Permissions
Share
Selection bias
Michael S. Jansz
CMAJ May 2017, 189 (18) E673; DOI: 10.1503/cmaj.732958
Digg logo Reddit logo Twitter logo Facebook logo Google logo Mendeley logo
  • Tweet Widget
  • Facebook Like

Jump to section

  • Article
    • Footnotes
    • Reference
  • Responses
  • Metrics
  • PDF

Related Articles

  • Surveillance report of Zika virus among Canadian travellers returning from the Americas
  • Response to “Selection bias”
  • PubMed
  • Google Scholar

Cited By...

  • Response to "Selection bias"
  • Google Scholar

More in this TOC Section

  • The 5 Ps need an update: toward a comprehensive sexual history
  • Don’t ignore perimenopause
  • Hospital-at-home programs in Canada: challenges and pitfalls
Show more Letters

Similar Articles

 

View Latest Classified Ads

Content

  • Current issue
  • Past issues
  • Collections
  • Sections
  • Blog
  • Podcasts
  • Alerts
  • RSS
  • Early releases

Information for

  • Advertisers
  • Authors
  • Reviewers
  • CMA Members
  • CPD credits
  • Media
  • Reprint requests
  • Subscribers

About

  • General Information
  • Journal staff
  • Editorial Board
  • Advisory Panels
  • Governance Council
  • Journal Oversight
  • Careers
  • Contact
  • Copyright and Permissions
CMAJ Group

Copyright 2023, CMA Impact Inc. or its licensors. All rights reserved. ISSN 1488-2329 (e) 0820-3946 (p)

All editorial matter in CMAJ represents the opinions of the authors and not necessarily those of the Canadian Medical Association or its subsidiaries.

To receive any of these resources in an accessible format, please contact us at CMAJ Group, 500-1410 Blair Towers Place, Ottawa ON, K1J 9B9; p: 1-888-855-2555; e: [email protected]

CMA Civility, Accessibility, Privacy

 

Powered by HighWire