lme/lmer for drug effects on blood pressure

Thanks Andrew, much appreciated.
Hi Matthew,

You haven't had any other replies so I'll just note that

lmer(pressure~drug*poly(timep,2)+(1|ID), data=drugdat)

looks OK to me.

andydolman at gmail.com <mailto:andydolman at gmail.com>

2009/5/20 Matthew Albrecht <albrem04 at student.uwa.edu.au
<mailto:albrem04 at student.uwa.edu.au>>

    Matthew Albrecht wrote:
    > Looking at the data, it looks parabolic, so I fitted the data to a
    > second order polynomial:
    I've just been pointed out the incorrectness of this sentence.
    Apologies, it should read:
    "I fitted a second order polynomial to the data."

    I'm using the excuse that it was quite a late night that night.
    Matt

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lme/lmer for drug effects on blood pressure

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