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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: RE: Outreg for descrptive stats |

Date |
Fri, 25 Jul 2003 17:22:14 +0100 |

This whole business -- let's call it the reporting problem, namely, how best to produce, collate and report a lot of related results -- is of course of great concern to many users. It is much of what most of us _do_ with Stata, perhaps most of what some of us do, and all of what a few of us do. One short answer to Ronnie's question is to check out Roger Newson's paper on his set of programs. That paper will be forthcoming in Stata Journal 3(3) or Stata Journal 3(4), but a pre-publication copy will no doubt be available somewhere soon, if not already. Another short answer, and it is said with my tongue only a little in cheek, is Yes. The program is called Stata. Let's put in context that John Gallup's very substantial -outreg- project was focused on a class of related commands and made possible by one basic principle, the generic similarity of those commands, itself the result of a tight design in Stata. What Ronnie wants to do here is produce a lot of results from a lot of commands and select some of the results and present them in a neat way. A program to do that would have to be very general and have to have lots of handles to cope with even the simplest possibilities which might arise. But that program exists. It is Stata itself. Let me put it another way. We can fantasise about the commands we would we like to see, and one might be called -report-. You would specify to -report- what commands you want to run on what variables and what categories and which results you want to keep and how you want to present them, and no doubt other details, like you want -if- and -in- and -by- and weights and what you do with missing values. What the syntax you want to type look like? (I am not saying write the program. I am saying _imagine_ the help file.) Horrendous. That's my guess. It would be like trying to lump a very large fraction of Stata into one command. Here is another approach. There is one basic bag of tricks which gets you a long way: cycle over variables with -foreach- cycle over categories with -foreach- or -forvalues- -quietly- issue <whatever> command pick up the saved results you want put them somewhere safe process them as a new (part of the) dataset. Here is a fairly simple example. I rely on the fact that the number of observations in the auto data set is more than the number of variables. Something like that is usually true. If not, there are other ways to do this. I cycle over the variables in the auto dataset, and do t tests, -by(foreign)-. 0. Initialise ============= I need places to put results. I am going to collect t statistics and P values. If I initialise variables by a -generate-, then I can -replace- within a loop. gen varname = "" gen t = . gen P_value = . local i = 1 1. Cycle ======== ds, has(type numeric) qui foreach v of var `r(varlist)' { capture ttest `v', by(foreign) if _rc { replace varname = "`v'" in `i' replace t = r(t) in `i' replace P_value = r(p) in `i' local ++i } } 2. What I have got? =================== list varname t P if t < . Note: there are two loops here, executed in unison. As soon as I have a result to put in an observation, I bump up the observation number. There is more about this in "Problems with lists", Stata Journal 3(2), 2003. Note: this is not Stata programming. Nowhere did I write the word -program-. Admittedly, you need to tricks from the programmer's repertoire to do this well. Nick n.j.cox@durham.ac.uk > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Ronnie > Babigumira > Sent: 25 July 2003 16:23 > To: statalist@hsphsun2.harvard.edu > Subject: st: Outreg for descrptive stats > > > Hi (stata8.1, win2k) > A quick one, is there an equivalent of outreg for simple descriptive > statistics? I am running a number of tests for diffrences > in means across > categories for a whole lot of variables. In addition, I am > doing a number of > cross tabulations. After this I cut and paste these into a > table in a report > however, how stata users are constantly on the look out for > efficiency, I am > thinking some one must have written a ado to automate this process. > > Does such a thing exist * * 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/

**Follow-Ups**:**st: RE: Outreg for descrptive stats***From:*Roger Newson <roger.newson@kcl.ac.uk>

**Re: st: RE: Outreg for descrptive stats***From:*Fred Wolfe <fwolfe@arthritis-research.org>

**st: RE: RE: Outreg for descrptive stats***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**References**:**st: Outreg for descrptive stats***From:*"Ronnie Babigumira" <ronnie.babigumira@ios.nlh.no>

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