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Thread: Median follow Up shorter than median over all survival, possible?

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    Median follow Up shorter than median over all survival, possible?




    Hello,

    I calculated overall survival and median follow up with Kaplan Meyer. In particular follow up was calculated as inverse of overall survival.

    The outcome is that median follow up is shorter than overall survival.

    Method should be ok but I can't understand whether it is a reliable outcome to show.


    Thanks!

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    Re: Median follow Up shorter than median over all survival, possible?

    I would report your data comparably to others in your field. Locate publications and see what appears to be the standard in your area. Some fields, like medicine, report survival at 30 days, 6 months, 1 year, and 5 years - if follow-up is sufficient.
    Stop cowardice, ban guns!

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    Re: Median follow Up shorter than median over all survival, possible?


    I did that. However I need to state median follow up. This is 30 months while median survival is 45. I reported also 3-y and 5-y survival.

    I calculated median follow up as suggested here: http://graphpad.com/support/faq/dete...ival-anlaysis/

    My calculations seem to be ok, but I don't know how to explain median survival is longer than median follow up.

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