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help for ^lrplot^
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Plots coefficients from a logistic regression
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^lrplot^ [ ^, XLab LEGgend SAVing(string) REPLace ^
^ti_s(integer) ax_s(integer) leg_s(integer) xlab_s(integer)^
^ti1(string) t2(string)^
^GROPT(string) MATrix(string) debug ^]
Description
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Plots the coefficients from a logistic regression
with confidence intervals, on a log scale.
Simplest use: do lrplot immediately after a logistic
regression.
Options
-------
^xlab^ gives coefficient labels on the x-axis
^legend^ gives a legend to the right
^sav^ saves the graph to a Stata graph file
^replace^ replaces the graph if it already exists
^ti1,ti2^ specifies the two title lines
^ti_s^
^ax_s^
^leg_s^
^xlab_s^ specify title, axis, legend and xlab-name size
as a percentage (0-400)
^gropt^ gives options to pass on to graph
^matrix^ is used to specify a matrix that holds
the coefficients and odds ratios that are to be
used
^debug^ is intended for developers. More or less useful.
Remarks
-------
The utility @lrmatx@ is required. Not very extensively tested.
Please inform the author of any bugs. Presently can only
calculate 95% C.I. Modify lrmatx if you want this changed.
The coefficients are put in a matrix by the utility @lrmatx@.
Run it immediately after a logistic regression command
or use:
^logistic regression command^
^lrmatx^ and
^matrix name=r(or),r(ci)^ to store results. Then use
^lrplot , matrix(name)^ to get results
The advantages of putting results in a matrix are
are that interactions and different scalings of
continuous variables can be made a lot more acessible
graphically.
For plotting of interactions, see @lrint@.
Examples
--------
. ^logistic^ response age gender
. ^lrplot^, legend
. ^lrplot^, legend ti_s(150) ax_s(120)
. ^lrplot^, xlab sav("model a")
. ^xi: logistic age gender i.gender^
[code fragment to generate easily
interpretable values of the
interaction terms. See ^lrint^]
. ^lrplot^, matrix(model) legend
Author
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Jan Brogger, University of Bergen, Norway
jan.brogger@@med.uib.no
Shameless plug :)
--------------
I am looking for internship & residency in internal
medicine/pulmonary medicine US/EU. Am doing PhD in respiratory
epidemiology now.