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Re: significance in graph (was: st: Date: Wed, 5 Apr 2006 20:19:27 +0100)


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: significance in graph (was: st: Date: Wed, 5 Apr 2006 20:19:27 +0100)
Date   Wed, 5 Apr 2006 21:11:41 +0100 (BST)

rajesh:
One way I like is to add confidence intervals around the estimates. I you want to do that than you
could have a look at Roger Newson's -eclplot- and other associated commands. Roger Newson has a
prepublication draft of his article in Stata Journal on how to use these programs on his website. 

Another thing you could do is make a line graph and graph a second line on top for only the
significant results which is a lot thicker, or do a scatter plot where you plot the
non-significant with open symbols and the significant ones with closed symbols. I've shown that in
the example below.

HTH,
Maarten

*-------------begin example------------
clear
input time perc sig
-80	-0.02   .
-70	-0.01   .
-60	-0.04   . 
-50	-0.05   .
-40	-0.05   .
-30	-0.07   -0.07
-20	-0.07   -0.07
-10	-0.16   -0.16
-5	-0.19   -0.19
-3	-0.17   -0.17
-2	-0.21   -0.21
-1	-0.27   -0.27
 0	 0.09    0.09
 1	 0.22    0.22
 2	 0.09    0.09
 3	 0.08    0.08
 5	 0.05    0.05
 10	 0.04   .
 20	 0.02   .
 30	-0.01   .
 40     -0.03   .
 50	 0.02   .
 end

twoway line perc time, lwidth(thin)  || /*
    */ line sig time, lstyle(p1) lwidth(thick)

twoway scatter perc time if sig==. || /*
    */ scatter sig time, msymbol(O)
*-------------end example----------------


--- Rajesh Tharyan <R.Tharyan@exeter.ac.uk> wrote:
> Say I have a table which looks like this the *** shows the values which are
> significant. Of course I can plot the percentages against time. Is there
> someway to highlight the significant values in the graph...Say for example
> by changing the size of the symbols only for the significant values.
> 
> Time	percentage	
> 
> -80	-0.02% 	
> -70	-0.01%	
> -60	-0.04%	
> -50	-0.05%	
> -40	-0.05%	
> -30	-0.07%***
> -20	-0.07%***
> -10	-0.16%***
> -5	-0.19%***
> -3	-0.17%***
> -2	-0.21%***
> -1	-0.27%***
>  0	 0.09%***
>  1	 0.22%***
>  2	 0.09%***
>  3	 0.08%***
>  5	 0.05%***
>  10	 0.04%	
>  20	 0.02%	
>  30	-0.01%	
>  40   -0.03%	
>  50	 0.02%	


-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z214

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


		
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