Responses

Download PDFPDF

Links between arterial stiffness and bone mineral density in middle-aged and elderly Chinese individuals: a cross-sectional study
Compose Response

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Author Information
First or given name, e.g. 'Peter'.
Your last, or family, name, e.g. 'MacMoody'.
Your email address, e.g. higgs-boson@gmail.com
Your role and/or occupation, e.g. 'Orthopedic Surgeon'.
Your organization or institution (if applicable), e.g. 'Royal Free Hospital'.
Statement of Competing Interests

PLEASE NOTE:

  • A rapid response is a moderated but not peer reviewed online response to a published article in a BMJ journal; it will not receive a DOI and will not be indexed unless it is also republished as a Letter, Correspondence or as other content. Find out more about rapid responses.
  • We intend to post all responses which are approved by the Editor, within 14 days (BMJ Journals) or 24 hours (The BMJ), however timeframes cannot be guaranteed. Responses must comply with our requirements and should contribute substantially to the topic, but it is at our absolute discretion whether we publish a response, and we reserve the right to edit or remove responses before and after publication and also republish some or all in other BMJ publications, including third party local editions in other countries and languages
  • Our requirements are stated in our rapid response terms and conditions and must be read. These include ensuring that: i) you do not include any illustrative content including tables and graphs, ii) you do not include any information that includes specifics about any patients,iii) you do not include any original data, unless it has already been published in a peer reviewed journal and you have included a reference, iv) your response is lawful, not defamatory, original and accurate, v) you declare any competing interests, vi) you understand that your name and other personal details set out in our rapid response terms and conditions will be published with any responses we publish and vii) you understand that once a response is published, we may continue to publish your response and/or edit or remove it in the future.
  • By submitting this rapid response you are agreeing to our terms and conditions for rapid responses and understand that your personal data will be processed in accordance with those terms and our privacy notice.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

Vertical Tabs

Other responses

Jump to comment:

  • Published on:
    Points to be considered when using cardio ankle vascular index (CAVI) as a marker of arterial stiffness
    • Javad Alizargar, Assistant Researcher Research Center for Healthcare Industry Innovation, National Taipei University of Nursing and health sciences, Taipei City 112,
    • Other Contributors:
      • Nan-Chen Hsieh, Professor
      • Shu-Fang Vivienne Wu, Professor

    Letter to editor:
    We read with interest the article by Zhang et al. [1], in which they concluded that total hip bone mineral density was correlated with cardio ankle vascular index (CAVI). However, some common mistakes can happen in the studies using CAVI as a marker of arterial stiffness. First, Pearson’s correlation between this marker and other continuous variables should be considered after testing both variables for normality. Normality of the variables had been proposed as an assumption for the Pearson’s correlation analysis [2], if this assumption is not met, Spearman’s correlation should be performed after categorization of the continuous variables.
    Second point that is essential in evaluation of CAVI is the effects of age on CAVI. Age has been proved to be largely correlated to CAVI and many studies tried to make reference values for CAVI in different age groups. Namekata et al. [3] provided reference values which can be used to categorize CAVI in the study individuals. Although Zhang et al. [1] controlled for age in the multiple linear regression, using reference values of CAVI in every individual could completely change the results and conclusions of their study. Although in the study of Zhange et al. [1] we can see the biggest correlation (r=0.631, P<0.001) between age and CAVI, correlation of age with other variables cannot be seen and there is a possibility that age and bone mineral density is also high. So, conclusions about the independent as...

    Show More
    Conflict of Interest:
    None declared.