Intended for healthcare professionals

  1. Research
  2. Systematic review to...
  3. Systematic review to determine whether participation in a trial influences outcome
Papers

Systematic review to determine whether participation in a trial influences outcome

BMJ 2005; 330 doi: https://doi.org/10.1136/bmj.330.7501.1175 (Published 19 May 2005) Cite this as: BMJ 2005;330:1175
Author Information

Please note:
  • Rapid responses are electronic comments to the editor. They are not journal articles. The BMJ reserves the right to remove responses which are being wilfully misrepresented as published articles.
  • Your name will be published with your response. Include your email address in the text of your response if you want others to see it.
  • Once published, you will not have the right to remove or edit your response. The BMJ may remove or edit responses at its absolute discretion.
  • A proportion of responses will, after editing, be published online and in the print journal as letters, which are indexed in PubMed. Rapid responses are not indexed in PubMed
  • Rapid responses have their own URL and are retrievable in an advanced search of thebmj.com in perpetuity.
  • If patients could recognise themselves, or anyone else could recognise a patient from your description, please obtain the patient's written consent to publication before sending your response. See our patient consent form.
  • By submitting this rapid response your are agreeing to our full rapid response requirements.
  • Please do not include original data in your response, unless it has already been published in a peer reviewed journal and you are able to include a reference.

Note: this will be visible to readers on the site. Please only include information you are comfortable with being published.

Statement of Competing Interests

A competing interest exists when professional judgment concerning a primary interest (such as patients' welfare or the validity of research) may be influenced by a secondary interest (such as financial gain or personal rivalry). Find out more.

Compose response

Note: avoid using generic titles like 'in response to the authors' - be specific.

More information about text formats

Plain text

  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Terms and Conditions

Read terms and conditions

Vertical Tabs

Back to top