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Re: st: Re: line patterns within Kaplan Maier


From   Michael McCulloch <mm@pinest.org>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Re: line patterns within Kaplan Maier
Date   Sun, 7 Oct 2007 08:24:19 -0700

Thank you Kit, for showing me the correct layering of parentheses on the plot#opts option.


You need to think graphically, not logically in terms of what you're graphing. Your graph has four lines, and there are a number of graphics options that refer to the line number, not where that line came from. This notion is common to many aspects of Stata graphics.

. webuse drug2
(Patient Survival in Drug Trial)

. sts graph, cumhaz by(drug)

failure _d: died
analysis time _t: studytime

. sts graph, cumhaz by(drug) plot1opts(lpattern(shortdash_dot) color(cranberry))

  plot2opts(lpattern(dash) color(purple))
works for me.

Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html


On Oct 7, 2007, at 2:33 AM, statalist-digest wrote:

Thank you Kit for pointing out that help text. What I'm looking for,
so far unsuccessfully, is guidelines on how to specify specific
formulas for cline_options for specific values of A and B.

The cline_options formulas I specified below were successful for only
the plot lines in which A==1 and B==1, or
A==0 & B==0.

However, but the other plot lines where
A==0 & B==1, or
A==1 & B==0.
remained a solid line in spite of my specification:

sts graph if stage==5, by(A B) lpattern(-) xtitle("Survival time in ///
months") l2title("Percent surviving") xmtick(0(10)150) ///
	lpattern("l" if A==1 & B==1) ///
	lpattern("--" if A==1 & B==0) ///
	lpattern("--" if A==0 & B==1) ///
	lpattern("--.#" if A==0 & B==0) ///
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