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RE: st: * mark indicating between group significans in box plots


From   Nick Cox <n.j.cox@durham.ac.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: * mark indicating between group significans in box plots
Date   Thu, 10 Nov 2011 12:19:11 +0000

I don't think anyone would have thought you rude here. Me, possibly.... 

Here is an oblique answer. 

sysuse auto
graph box turn trunk, text(55 50 "an interesting graph") ysc(r(. 60))

Nick 
n.j.cox@durham.ac.uk 

Lars Folkestad

It seems that some of my text has disappeared here.

Im using a: Wilcoxon signed ranks test - as my data is paired and not
normally distributed.

I did not mean to be rude.

I respect your decision not to answer, but seeing that this the starring
is a much used and 
Often asked for by reviewers in my field I hope someone who knows the
answer to how to star mark
A boxplot will answer.

Den 10/11/11 12.50 skrev "Nick Cox" <njcoxstata@gmail.com>:

>I will show my hand, as it were.
>
>I've often seen people test a difference between means and show a box
>plot as the graphical equivalent. I'd argue that a plot of means with
>confidence intervals would be directly related, although even then
>there are pitfalls.
>
>Of  course, that may not be what you are doing. If your test were say
>a Mann-Whitney-Wilcoxon test, a box plot makes more sense.
>
>Even so, a -dotplot- or -stripplot- (SSC) shows much detail than a box
>plot for two groups. A -qqplot- is even better.
>
>I personally dislike starring as a primitive practice and draw the
>line at explaining how to do it but there are plenty of people to
>think otherwise.

Den 10/11/11 10.31 skrev "Lars Folkestad" <lfolkestad@health.sdu.dk>:

>>>Sorry, thought it was a graphics question and did thus not mention the
>>>statistics

Den 10/11/11 10.05 skrev "Nick Cox" <njcoxstata@gmail.com>:

>>>>Various thoughts, but I'll mention only one: What's the underlying
>>>>test?

On Thu, Nov 10, 2011 at 8:49 AM, Lars Folkestad

>>>>> Im trying to indicate between group significant in a box plot using
>>>>>
>>>>>
>>>>>        . graph box y1 y2
>>>>>
>>>>> Now i want to indicate that the between y1 and y2 there is a between
>>>>>group
>>>>> significants using the standard * for p<0.05 and ** for p<0.001
>>>>> I can do it in the editor, but if there is a code i could put in my
>>>>>do
>>>>> file, that would be the easiest.
>>>>>
>>>>> Iv been fiddling with the yvar option in something like this:
>>>>>
>>>>> . graph box y1 y2, box(1, lcolor(navy) yvar(re("*")) box(2,
>>>>>fcolor(green)
>>>>> lcolor(green))

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