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  • 1.  Additive or multiplicative relative risks

    Posted 10-01-2019 07:18
    Need help deciding if RR are additive or multiplicative e.g. smoking and asbestos exposure?

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    Donald Stanley
    Physician
    Associates in Pathology
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  • 2.  RE: Additive or multiplicative relative risks

    Posted 10-02-2019 09:08
    Risk ratio is multiplicative, says CONSORT Statement Explanation & Elaboration (Item 17b, Page 18f).

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    Reinhard Vonthein
    Universitaet zu Luebeck
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    Original Message


  • 3.  RE: Additive or multiplicative relative risks

    Posted 10-02-2019 09:21
    Whether two RR multiply indeed: test for interaction.

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    Reinhard Vonthein
    Universitaet zu Luebeck
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    Original Message


  • 4.  RE: Additive or multiplicative relative risks

    Posted 10-02-2019 09:46

    Indeed RR <g class="gr_ gr_17 gr-alert gr_gramm gr_inline_cards gr_run_anim Grammar multiReplace" id="17" data-gr-id="17">are</g> multiplicative; AR <g class="gr_ gr_18 gr-alert gr_gramm gr_inline_cards gr_run_anim Grammar multiReplace" id="18" data-gr-id="18">are</g> additive.

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    Luisa Borrell
    Professor & Chair
    CUNY Graduate School of Public Health & Health Policy
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    Original Message


  • 5.  RE: Additive or multiplicative relative risks

    Posted 10-02-2019 14:24
    ​Could you provide a little more information including whether these are from the same data set?

    To start, odds ratio is far preferable to relative risk. For either measure, multiplying or adding i.e. relative risk of cancer from smoking vs. not smoking from one study with RRcancer from asbestos exposure or not from another study would definitely produce the wrong interpretation.

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    Shalese Fitzgerald
    University of Arkansas for Medical Sciences
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    Original Message


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