Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

Re: st: Re: Plotting Growth Curves


From   Allan Reese <[email protected]>
To   Stata distribution list <[email protected]>
Subject   Re: st: Re: Plotting Growth Curves
Date   Mon, 19 Jan 2004 11:01:46 +0000 (GMT)

> From: "Timothy W. Victor" <[email protected]> asked
> Sent: Saturday, January 17, 2004 11:55 PM
> >
> > I have repeated measures on 604 subjects. I'd like to get a visual feel
> > for the functional form of the growth curves for this sample. Is there
> > an easy way to plot all curves for all subjects (or most) in one graph?

and On Sun, 18 Jan 2004, Scott Merryman wrote:
> Try -xtline-

That would work, but smacks somewhat of the "separate tool for every task"
approach.  Hence I think it worth mentioning another method which is to
reshape the data from wide (the repeated measures form) to long (factorial
observation form).  The time point then becomes a new variable and can be
used as X in graphs.  Without further reading and tests, I do not know the
advantages and drawbacks of either method.  I doubt that any graph with
604 lines on it would be readily interpreted, but Stata has the power to
sample or select cases.


R. Allan Reese                       Email:     [email protected]
Associate Manager GRI                Direct voice:   +44 1482 466845
Graduate School                      Voice messages: +44 1482 466844
Hull University, Hull HU6 7RX, UK.   Fax:            +44 1482 466436
====================================================================
Be careful in handling the battery of the remote control transmitter
If swallowed consult a physician immediately for emergency treatment
               [Safety instructions: Hitachi CP-X275 data projector]

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index