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Dear people:
maybe extending the question of Ricardo -
I am running xtmixed for growth curves of z escores according ages 6-6 7-6
8-6 9-6 ... months and would like to get the correlation/covariance matrix
of the observed and modeled z. Is it possible directly from the -long- data
set?
Thanks for any help.
José Maria
Jose Maria Pacheco de Souza, Professor Titular (aposentado)
Departamento de Epidemiologia/Faculdade de Saude Publica, USP
Av. Dr. Arnaldo, 715
01246-904 - S. Paulo/SP - Brasil
fones (11)3061-7747; (11)3768-8612;(11)3714-2403
www.fsp.usp.br/~jmpsouza
----- Original Message -----
From: "Ricardo Ovaldia" <[email protected]>
To: <[email protected]>
Sent: Monday, July 20, 2009 10:51 AM
Subject: st: correlation for longitudinal data
Dear all,
Is there a way to estimate a correlation coefficient of two continuous
measurements each collected over time on a sample of patients? Not sure if
I can do this with -xtreg- for example.
Thank you,
Ricardo
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