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Thread: Confidence interval for person time incidence rate

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    Confidence interval for person time incidence rate




    Dear everyone,

    I would like to estimate a 95%CI of person time incidence rate (as 45 death per 10,000 person year)
    Anyone knows a way to estimate it ?
    Same question for Kaplan Meier estimate..
    Thanks a lot for your help!

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    Re: Confidence interval for person time incidence rate

    See page 84 of the book. There is an equation for CI calculation.
    https://books.google.co.uk/books?id=...20rate&f=false

    Regarding K-M, I am afraid you cant generate a CI just based on number. It takes account of the number of events, number at risk and uses Greenwood's method (most software by default), which uses the sum of all the estimates in preceding time interval to compute variance and CI. If you've found any other method, I would be interested to hear.

    HTH
    Oh Thou Perelman! Poincare's was for you and Riemann's is for me.

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    Re: Confidence interval for person time incidence rate


    Correction, it appears to be on page 98 of the above book.
    Stop cowardice, ban guns!

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