From: Sean Davis <sdavis2 at mail.nih.gov>
To: r-help <r-help at stat.math.ethz.ch>
Subject: [R] Repeated measures
Date: Wed, 6 Oct 2004 08:07:38 -0400
I have a data set in which I have 5000 repeated measures on 6 subjects over
time (varying intervals, but measurements for all individuals are at the
same times). There are two states, a "resting" state (the majority of the
time), and a perturbed state. I have a continuous measurement at each time
point for each of the individuals. I would like to determine the "state"
for each individual at each time point. It looks to me like I should be
able to do this with the "hidden" command from the "repeated" package
(http://popgen0146uns50.unimaas.nl/~jlindsey/rcode.html), but I have found
it a bit confusing to get started. The distributions in the two states are
approximately normal with differences in centrality and possibly variance
(but I can start by assuming similar variances).
Thanks,
Sean